WO2001082818A2 - Verfahren und vorrichtung zur herstellung von zahnersatz mittels injektionsabdruck - Google Patents
Verfahren und vorrichtung zur herstellung von zahnersatz mittels injektionsabdruck Download PDFInfo
- Publication number
- WO2001082818A2 WO2001082818A2 PCT/EP2001/004864 EP0104864W WO0182818A2 WO 2001082818 A2 WO2001082818 A2 WO 2001082818A2 EP 0104864 W EP0104864 W EP 0104864W WO 0182818 A2 WO0182818 A2 WO 0182818A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impression
- tooth
- sleeve
- model
- retention
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0036—Tooth replica
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/0006—Impression trays
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
- A61C17/024—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication with constant liquid flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/002—Means or methods for correctly replacing a dental model, e.g. dowel pins; Dowel pin positioning means or methods
Definitions
- the present invention relates to an injection impression method suitable for the production of dentures by means of a laser measurement milling system and a device therefor.
- Milling processes are also known which use images as a template for the dentures to be created instead of three-dimensional models (“optical impression”). This process is used in particular for the production of ceramic crowns and inlays. However, this process can also be used no precise, in particular no gnathological occlusal surfaces, so that here too the occlusal surfaces have to be ground in by the dentist by hand.
- a method is known in which an impression of the dentition area in question is taken from a viscous plastic material and then a correction impression is made from a thin plastic material from this first impression by applying the thin material to the impression and the first impression with the thin liquid material is put back in the mouth. If the patient then bites on the impression, the thin material spreads out, whereby possible inaccuracies of the first impression can be compensated for.
- Another object of the invention is to provide a method for producing dentures by means of such laser measurement and milling systems, which can be handled by the user himself without special manual skills and with which it is possible to treat a patient in as few sessions as possible, preferably only one session to be able to immediately get the right dentures.
- the present invention makes use of the possibilities of modern laser measurement and milling systems, such as the so-called CAD-CAM-CNC milling machine, which is a multi-axis milling machine with tool changer, and of existing software programs with libraries for tooth modeling, with which The method according to the invention provides improved models for dentures that can serve as a template for such systems.
- the present invention relates to a method for producing a model of a denture, comprising the following stages:
- the present invention relates to a method for producing a model of a denture, comprising the following stages:
- the invention further relates to an impression tray, as is usually used for bite and impression taking, which has been specially adapted for carrying out the method according to the invention, and to a modification of such a tray, which can be used as an oral irrigator.
- An impression tray is a curved groove, the shape of which corresponds to the course of the tooth area to be imaged. To take the impression, the impression material is filled into the groove and placed on the relevant tooth area.
- the channel has an outer buccal (cheek side) and an inner lingual (tongue-side) side wall and a channel bottom that forms the top of the spoon.
- pre-impression means a finished impression with a negative shape of the tooth or tooth area of interest from which a model is to be made. This pre-impression can be used to produce the model, similar to a casting mold.
- impression material means, based on the model, the material from which a desired model is produced.
- conditioning encompasses measures that are carried out on the tooth for the production of the model, such as roughening, grinding, etc.
- Figures 1 and 2 show an impression tray for a partial jaw area with two buccally arranged functional bores with threads for the reception of a banjo bolt, also shown.
- Figure 3 shows a horseshoe-shaped impression tray in the top view with centrally arranged buccal and lingual functional bores as well as further bores and retention plates with retention pins for attachment. the impression tray.
- Figure 4 shows a perforated sleeve with a rubber jacket that can be used for the manufacture of tooth root models.
- a special impression tray 1 preferred according to the invention has at least one functional bore 2 on the cheek (buccal) side, the functional bore or the functional bores 2 usually being / are provided at a position of the tray which corresponds to a tooth position when the tray is inserted into the mouth.
- a hollow screw 4 can be inserted into one or more of the functional bores 2, the hollow screw 4 and the through-hole 2 preferably having a thread for a secure hold.
- the cavity in the head of the screw 4 can be designed as a hexagon socket 5.
- the tooth or tooth area of interest is simulated by injecting an impression material into a pre-impression of the tooth / tooth area in question via an injection channel provided in the pre-impression in a suitable position.
- the impression material can optimally fill the cavity in the pre-impression, which has the shape of the tooth / tooth area to be reproduced (negative shape), and provides an exact image of the tooth / tooth area after hardening.
- the images or models obtained show a high degree of accuracy with regard to preparation margins, length of the tooth stumps, bite height, etc. This procedure can generally be used in dental prosthetics to create replicas.
- teeth of a patient himself, any model thereof, a prosthesis or the like can be used as a template for the preprint. It is suitable for the production of dentures such as crowns, inlays, bridges, dental implants, prostheses, working copies made of any materials, temporary restorations and the like.
- the method according to the invention provides models of this type which already have the necessary prerequisites for the production of dentures with precise occlusal surfaces.
- the model itself can represent the denture, for example a temporary.
- the injection channels are located in the preprint in positions that correspond to the tooth positions in the dentition, so that a targeted injection is possible.
- injection channels The number of injection channels is freely selectable per se. Injection channels that are not required for the application in question can be closed with suitable closures and / or serve to drain excess impression material.
- separate drainage channels preferably lingually, can also be provided.
- pressure can be built up which supports the filling of the negative mold.
- Injection channels can be provided. In this case, part of these channels can serve as a drain.
- a material that contrasts with it is selected as the material for the impression material, ie a material that does not match the material of the preprint
- I i connects so that the image, the model, can be taken from the preprint.
- the impression can first be cast for a master model or for the production of an image of the jaw, for example with plaster, plastic or another suitable material.
- the model is then preferably taken from the preliminary impression together with the jaw image, whereby the repositionability of the model from impression material can be ensured.
- a bite can first be made from a contrasting material in the preprint, removed from the preprint and then, if desired, a final impression can only be taken with an identical, ie connecting, material.
- the impression tray should be fixed with so-called stops on the 0 tooth row at a suitable distance.
- a suitable distance is approx. 4 mm, but this can vary if necessary.
- the method according to the invention is particularly suitable for the production of dental implants, tooth crowns, inlays and fixation holding devices, so-called abutments, and attachments.
- the bite and pre-impression can be taken in accordance with conventional procedures known per se for this purpose with the usual materials.
- the usual plastic materials for the bite can be used, such as those used for temporary restorations. These are usually soft, quickly solidifying, easy to process and as little shrinking plastic materials that can be applied with spray cartridges.
- the tooth to be crowned can be lightly ground or roughened to enable the plastic material to be applied to hold the bite better.
- some of the height of the tooth can be removed or unevenness, for example slight depressions, can be applied, which improve the adherence of the material to the tooth (retention).
- the material for the bite registration is applied to the tooth to be crowned in such a way that in the area of the planned crown the occlusal surfaces of the opposing teeth are completely covered by this bite. After the bite material has set, the bite is removed from the mouth and excess areas of no interest that do not belong to the bite of the tooth to be crowned are ground back.
- the gnathological contacts of the opposing teeth are shown on the plastic of the bite.
- the gnathological contacts are preferably marked, for example with a colored pencil, before the plastic material is applied to the corresponding opposing tooth. These markings rub off on the bite and thus serve to better identify and locate the contact points for the later production of the occlusal surface.
- the contact points shown can be drilled with a fine drill, for example a rose drill.
- the conditioned bite is placed back on the tooth to be • crowned and, if necessary, corrected while maintaining the color markings or the holes, for example by grinding it in again with articulation paper.
- a material is used for the preprint which does not bond or stick to the material of the bite, so that the bite can be removed from the preprint obtained.
- a customary thioether impression compound can be used for the preliminary impression.
- the pre-impression including the bite is removed from the mouth and the tooth to be crowned is ground back to the required extent.
- the bite is first removed from the preliminary impression, a negative form (cavity) of the crown model to be produced remaining in the preliminary impression.
- an injection channel is punched out in the pre-impression, which connects the cavity with the negative shape of the tooth to be crowned to the outer surface of the pre-impression and which is used to inject the impression material for the crown model.
- the injection channel should be installed in such a way that the injection can also take place in the mouth of a patient as freely as possible. For reasons of space, it is suitably attached in the buccal position in the present example.
- a further channel for example lingually (on the tongue side), but preferably opening above the tongue, is preferably stamped into the preliminary impression, which can be used to remove excess impression material.
- this drainage channel should be kept closed in order to have control over the complete filling of the cavity created by the preparation. As soon as pressure becomes noticeable, which indicates an adequate filling, the channel is released and excess material can drain off.
- the pre-impression prepared in this way is now placed on the tooth stump and injected via the injection channel into the cavity of the negative mold.
- the impression material fills the cavity in the form of the tooth to be imaged, including the bite shape.
- the cavity, and thus the fabrication of the crown model can be filled with a special silicone, as is commonly used in dental prosthetics.
- a suitable material is sold, for example, under the name Bite Jet by Coltene.
- the materials selected for the pre-impression or for the impression material should not bond or stick together.
- the impression material used should be suitable for scanning with a laser.
- the pre-impression is removed from the mouth together with the hardened impression material.
- the model in the form of the tooth to be crowned can now be taken from the preliminary impression and used as desired, for example measured directly with a laser.
- the model is preferably taken from the preliminary impression, including the sprue pins, which have formed in the position of the channels as a result of excess impression material. These pouring pins can be used for further processing as a holder and / or for fixing.
- the buccal sprue pin can serve as a holder when the model is subsequently scanned in using a laser measurement system.
- the crown model with the preformed occlusal surface obtained as described above can be scanned into a computer with the aid of a laser measurement system as it was taken from the preprint.
- the crown including the occlusal surface, can now be designed using a computer using suitable graphics programs and tooth libraries, as they already exist.
- print proofs or the like which may be present on the model due to the process, can also be retouched, so that it is not necessary to edit the model before scanning it.
- the model can be provided with a suitable contrast agent, for example titanium dioxide powder, before scanning.
- a suitable contrast agent for example titanium dioxide powder
- the markings on the contact points are captured exactly by the scanner.
- they can be covered, for example, with a varnish that is not recognized by the laser and / or that repels the contrast medium.
- the contact points can also be reworked with a drill.
- the model obtained provides the essential data for the approximal contact zones, that is to say the contact zones to the neighboring teeth and the contact points to the opposing teeth, and the preparation margin on the underside of the crown for the crown to be produced. Corrections and modifications to the other areas of the crown to be made, such as the lateral tooth curvatures, can be carried out using software libraries that are customary for this purpose.
- the occlusal surface of the model obtained naturally does not correspond to the occlusal surface of the tooth to be crowned, but represents the negative impression of the tooth with the marked contact points.
- the negative counter tooth impression basically forms the maximum volume of the possible crown shape. Based on the negative counter-tooth impression and the marked contact points, the best possible purchase area for the tooth to be crowned can now be determined, for example, using appropriate software and computer-assisted processing.
- the optimized data can be used for the production of the corresponding dentures using the milling machine.
- a bite with a simple occlusal surface is first produced, as described above.
- a so-called functional bite is then taken, the patient performing functional movements with the teeth when taking the bite.
- Care must also be taken to ensure that the contact point markings are not glued or subsequently removed. This can be prevented, for example, by making the contact point markings sufficiently deep! marked with a drill after taking the simple bite.
- the functional bite is significantly larger than the "simple" bite and represents a grated chewing surface, so to speak.
- the preprint is now taken over the functional bite including the simple bite.
- the occlusal surface is calculated using modified software libraries of tooth shapes and corresponding modification programs. In this way, crowns with perfect occlusal surfaces can be obtained, which do not have to be reworked, as in the conventional methods.
- the calculation of the purchase area can be done as follows:
- the contact line / area (equator) to the neighboring teeth is checked, starting from the occlusal contact points, which is also possible over the entire area. Then the buccal and lingual tooth arches are determined using characteristic proportions as offered in the library. This usually deviates the most from the shape specified by the model.
- the subsequent determination of the cusp inclination can be done using averages when designing a simple crown. Taking into account the specified contact points, the fissures are taken from a library of ideal occlusal surfaces according to the models of optimal occlusal surfaces, depending on the tooth type. ,
- the registered chewing tracks are initially set to mean values. Bumps traversed with the help of a functional program. The deviations from the registered quay can be independently optimized by the computer program. With this program, an asymptotic approximation to the optimal limit can be achieved.
- the relevant data for the design of an optimal occlusal surface are made available by means of existing tooth shape libraries, by means of which the design of an optimal crown with a milling cutter system is made possible , Post-processing of the crowns obtained in this way is no longer necessary, so that the crowns can be used directly.
- the method can be carried out easily on site in the dental practice.
- the processed data is then fed into a compact milling system, for example a five-axis compact system with tool change.
- the next example for the application of the method according to the invention is the production of an immediate implant for an extracted tooth.
- the root must be designed in addition to the crown.
- the cavity also known as the “alveolus”, which the extracted root has left in the bone, as optimally as possible.
- the gumline should be sufficiently sealed to prevent epithelial overgrowth from the sulcus, since the artificial root cannot be connected to the existing bone epithelially but only via connective tissue.
- the teeth to be extracted are often damaged, so that a mere copy of the existing, extracted root would only result in insufficient support and the implant would not be sufficiently stable. Adequate connection strength between the root and crown (abutment) must be ensured.
- the abutment on an implant for a single tooth must also be rotationally stable so that it cannot break out due to rotary movements when chewing.
- the planning of the bone enlargement can be carried out by means of an X-ray analysis with a measuring ball and measuring cylinder, in that both a panoramic picture and a transverse picture in the posterior region are carried out.
- a measuring ball and measuring cylinder in that both a panoramic picture and a transverse picture in the posterior region are carried out.
- several recordings can also be made.
- the possible precise measurement of the distance to the mandibular nerve and the maxillary sinus enables planning and thus implementation of an optimal expansion of the bone cavity resulting from the extraction.
- an image of the bone cavity which should have the best possible resistance form for a good hold of the implant, must be created.
- an impression mass is entered into the bone cavity obtained.
- This impression material is shaped in advance so that a protrusion the size of the removed tooth stump protrudes from the tooth compartment. This then serves as a fastening for the crown to be put on.
- the extracted tooth can be used as a template.
- a sleeve for example made of metal
- the sleeve should also be filled with impression material in order to achieve a stronger connection.
- the crown can then be placed on the sleeve.
- thermoplastic material usually used for this purpose can be used as the impression material for the root, which should be sterile for the application described.
- Suitable materials are, for example, thermoplastic impression materials, which are sold under the name stents or Kerr.
- the root impression obtained on the part protruding from the tooth compartment is designed so that the model for the root implant can be repositioned into the model for the crown.
- the model for the root implant is then put back into the bone cavity.
- a perforated sleeve with an elastic sleeve is used for taking the impression of the tooth root, which is inserted in the root area and filled with the impression material, as shown in FIG. 4.
- the perforated sleeve 20 according to the invention tapers towards the tip and is thinner and longer than the tooth roots.
- one or more openings 22, 23 are provided, of which at least one of the openings 22 sits exactly on the tip, or the tip is open.
- the perforated sleeve 20 preferably has three to four small holes 23 in its tip region, one of which sits exactly on the tip.
- the perforated sleeve 20 can be formed from any bendable and / or elastic material.
- a bendable metal is preferably used.
- the perforated sleeve 20 is surrounded by a thin elastic sleeve 21, which at least envelops the area that is inserted into the alveolus.
- the sleeve can be made of a rubber material or a similar elastic material, preferably it is a rubber sleeve.
- the elastic sleeve 21 is fastened all around tight to the perforated sleeve.
- a sealing collar 24 or the like can be used.
- perforated sleeves 20 are pushed in according to the number of roots down to the lowest point of the exposed socket. If necessary, the perforated sleeves can be bent to fit. t. ' i j
- One after the other, elastic impression material is then injected into the perforated sleeves 20 by means of an impression compound syringe 29 such that the syringe cannula seals the volume of the perforated sleeve 20 flush.
- Impression mass is first pressed into the most distal, apical root tip area, the impression mass penetrating through the openings 22, 23 in the sleeve tip in the area of the elastic sheath and completely filling the space of the alveolus there. Air and blood that are still in the socket are thus completely pushed out of the socket from bottom to top, which ensures that an accurate representation of the socket shape can be obtained without malformations due to possible air and / or or blood inclusions.
- the cannula tip 28 preferably remains in the perforated sleeve 20
- disposable syringes are preferably used, the cannula tips 28 of which can be easily cut off from plastic, for example with a knife 30, as indicated in FIG. 4.
- the injected impression material fills the elastic sleeve 21, for example one. Rubber sleeve, in the socket and bulges it more or less strongly above the socket. In this way it is possible that the gumline is also precisely mapped for the optimal design of the later implant. At the same time, this sensitive area is protected against possibly non-sterile impression material, such as is used for taking an impression of the tooth or for producing a tooth model according to the inventive method.
- a previously made impression of the crown can be placed on the root model located in the alveolus and the cavity formed as a template for the crown, as described above, can be filled with impression material for the crown, for example with special silicone.
- the pre-impression with the crown impression including the root impression, is removed from the mouth and the procedure described above for the production of a crown is carried out. If necessary, modifications can be made to the model before scanning the tooth model obtained with crown and root.
- transverse grooves and longitudinal troughs near the root tips can be provided.
- a bevel for the thickened gumline seal - a so-called bevel - can be created, which usually has a length of about 2 mm.
- a prefabricated screw implant can of course also be used for single-root teeth.
- the individually milled implants can also be provided with a screw thread.
- the tooth stump on which the crown is to be placed can also be designed as desired.
- it can be provided with a thread, whereby rotation stability should also be provided here.
- the tooth model which may have been modified, can now be scanned in - as described above for the crown - and the data recorded for processing in the computer and the subsequent replication using the milling system.
- the optimal shape of the dentures to be created can now be calculated on the basis of the recorded data and with the help of appropriate libraries on the computer.
- the finished final implant can take a slightly different position than the one determined by the impression.
- a lavish cut out of the crown model which is made of silicone, for example, so that it lies loosely - with play - on the abutment or crown stump, together with the preliminary impression, a “correction relining” with silicone or the crown model with the implant post are taken together again.
- wax models of the final tooth shape and position can also be made and additionally scanned in order to improve the data acquisition in order to obtain a broader data acquisition.
- working scans can be made in advance from the scanned data from softer or cheaper materials, on the basis of which the fit and shape of the dentures can be checked and corrected if necessary.
- the present invention can also be combined with industrially prefabricated implants.
- a so-called wax-up an image of the final tooth shape and position in wax, can be made, which can be recorded together with the working copies using the laser if necessary.
- the injection impression method according to the invention can also be modified for the production of inlays.
- Inlays are dental fillings which, in contrast to dental fillings applied directly in the mouth, are made from a permanent material using an image and inserted into the tooth.
- Bite registration can generally be dispensed with in inlay production, since the occlusal surface can be reconstructed on the basis of residual bumps or cusp inclinations on the diseased tooth.
- the cavity in the tooth to be supplied with an inlay is first filled and ground in with a conventional filling that is to be applied directly into the mouth.
- the preliminary impression is taken.
- the pre-impression material After the pre-impression material has set, the pre-impression is removed from the mouth and punched through at a location suitable for the injection channel, so that the optimal injection channel and also a holder for the laser fixation are possible for the inlay impression.
- the preliminary impression is set back on the tooth to be imaged and the imaging material is injected into the tooth cavity via the injection channel.
- the preprint can be fixed during the setting as usual by biting the patient.
- the pre-impression is removed from the mouth and the inlay model is preferably removed from the pre-impression with a sprue pen, optionally processed and recorded with a laser.
- inlay production In contrast to the manufacture of crowns, inlay production must ensure that the break-off edges, the so-called preparation margin, of, are respected. It has proven useful to turn the direction of the laser by 90 ° in addition to the usual laser detection so that the main direction of the preparation (from mesial to distal) can be better represented. In this case, it is sufficient for the construction of an inlay to measure the cavity, that is, it is sufficient to detect only the areas of the inlay model with the laser measuring system that reflect the shape of the cavity, so to speak, the underside of the inlay impression. The molding edges of the inlay impression then simultaneously represented the actual inlay edges.
- the negative form of the pre-impression to be filled with the impression compound is evacuated before the injection of the impression compound. This measure prevents possible air ingress, which could lead to inaccuracies in the model of the tooth area in question.
- At least one channel is punched out at a suitable location in the initially produced pre-impression of the tooth area in question, via which the evacuation takes place by connecting the channel to a vacuum device. Any additional channels that are present in the preprint and that are not used for evacuation are sealed tightly.
- the tightness of the pre-impression used in the relevant mouth area required for the evacuation results from the accuracy of fit of the pre-impression.
- the tightness is also supported by the pressure exerted by the patient on the pre-impression placed in the mouth.
- the impression material is injected into the negative form.
- an additional channel can be provided at a suitable point in the preprint or a prepared channel can be opened after evacuation. In principle, the injection can also take place via the evacuation channel itself. - Due to the vacuum, the filled impression material is distributed evenly and without air bubbles in the cavity of the negative mold.
- the distribution of the mass can additionally be supported by the suction exerted by the vacuum device used for the evacuation, for example a pump or the like.
- the impression material is injected by exerting a holding pressure on the filled impression material.
- the impression material can be injected using a syringe. It can then be re-pressed using the syringe plunger.
- the channel which is connected to the vacuum device, must be closed to build up the post-pressure.
- a closure can be used for this purpose, the line to the vacuum device can be disconnected, or the closure itself can be done by means of impression material sucked into the evacuation channel.
- any means suitable for this purpose can be used to exert the holding pressure and to close the channel for evacuation.
- the repressing not only improves the impression accuracy, but also supports the resetting of the preprint. Particularly in the case of large cavities in negative molds, the pre-impression can be deformed as a result of the evacuation, which must be eliminated by resetting in order to achieve the greatest possible model accuracy.
- the channel (s) for the evacuation and injection of the impression material are preferably arranged buccally (cheek side) in the pre-impression, since the buccal cale arrangement allows better handling than a lingual (tongue-side) arrangement.
- drainage channels can be dispensed with.
- curved metal or plastic splints that are adapted to the jaw shape and, when taking the impression, encompass the corresponding jaw area, including the patient's teeth, and absorb the impression material.
- the patient When taking the impression, the patient thus bites into the impression material, which is located in the impression tray, and with the opposing teeth on the upper side of the tray, whereby this can be fixed.
- the spoon including the impression is then removed from the mouth and the impression is taken from the spoon.
- holes 2 are provided in the impression tray according to the invention for injection and evacuation, which are referred to below as “functional holes”. These functional holes 2 are usually arranged in the impression tray 1 according to the invention in such a way that they correspond to the normal position of the teeth in the jaw. Functional bores 2 for anterior teeth can have a smaller diameter than functional bores 2 for the other teeth.
- the bucket 1 can have any number of further bores 7. These bores 7 serve to retain the impression compound on the tray and are therefore also referred to as “retention bores”. Their diameter is usually significantly smaller than that of the functional bores 2.
- Functional bores 2 can have a diameter of approximately 3 mm and those of the additional bores 7 of approximately 2 mm.
- the functional bores 2 are preferably arranged buccally, in particular buccally in the center, as shown in the figures. Their number is not critical, there may be one, two or more functional bores 2 as required. For example, a corresponding functional bore 2 can be provided for each tooth position. ⁇
- the upper side 6 of the impression tray is freely available, so that the patient can bite freely on this upper side 6.
- This configuration ensures that the same situation can be created for the production of the model as in the production of the preprint and the preprint can also be positioned as precisely as possible for the illustration of the model, in particular the height, that is to say the vertical dimension to get the model exactly.
- the patient should be able to exert pressure by bite on the spoon or the preprint in exactly the same way as in the production of the preprint.
- Suitable closures can be, for example, plugs or screws.
- Functional bores 2 which are not required for the injection, or further functional bores 2 at a suitable location can serve as a drainage channel for excess injected mass if required.
- the functional bores 2 can have means for connecting necessary supply lines, such as for the injection of the impression material or for the vacuum device, threads, for example, for receiving these means, closures, sleeves etc.
- a hollow screw 4 is provided for the functional bore via which the injection is to be carried out, which contains an inner channel 5 which is available for the injection, as is also shown in FIG. 1.
- the inner channel 5 has a thread, at least in part, preferably in the region of the outer wall, which makes it possible, by means of an appropriate insert, to securely close or open the cavity if necessary without changing the entire screw have to.
- the channel 5 in the hollow screw 4 can advantageously be used to insert a punch, a plug-in sleeve or the like for punching out the injection channel into the preliminary impression.
- the punch for the injection can be repositioned in the screw and serve as an injection nozzle.
- a cross screw can in the outer area
- the banjo bolts and plug connections can be seated or designed to be retractable in the bucket wall.
- the models received for calibration should be aligned and fixed appropriately.
- the hollow screws 4 are therefore designed such that they simultaneously fit for use on the scanner and can serve as calibration points or fixation of the respective model. Identically designed screws / plug connections can also be used. It is essential that the inner channels 5 correspond to one another, so that the model can be precisely fixed using the sprue.
- the head can have a thickness of 3 mm and an edge length of approximately 8 mm, the edge length being approximately twice as long as the length of the inner hollow cylinder.
- the channel area in the head can be designed as a hexagon socket.
- the hexagon socket can serve as a fixation for the scanning process and at the same time enables the screw to be removed without damaging the outer surface of the bucket.
- the scanner can be calibrated using the edges of the square screw, using the edges to align the model to be measured.
- the model of the desired dental prosthesis produced according to the invention is inserted into the punching sleeve via the sprue, which was created by the injection, and is fastened to the hollow screw with the latter. This enables the model to be optimally aligned for scanner acquisition.
- one side of the square banjo head is aligned parallel to the chewing plane, so that when scanning this surface serves as an orientation for the scans to be taken.
- one scan can be taken at an angle of + 30 ° and another at an angle of - 30 ° to the resulting scan plane to record the occlusal surface of the planned crown.
- the prepared lower surface opposite the occlusal surface is recorded with the so-called preparation margin of the future crown by rotating through 180 °.
- the underside can also be scanned with two 30 ° angled scans. This means that the scans of the occlusal surface and the scans of the lower surface can be positioned exactly perpendicular to one another, so that the image of the entire crown can be determined from the acquired data.
- an impression tray for a complete jaw can have 14 holes or screws corresponding to the number of teeth.
- an impression tray according to the invention can be applied to any conventional form of an impression tray.
- the invention is suitable, for example, for entire impression trays or one-sided impression trays
- the wall thickness of the spoon should be adequate retention and sufficient
- a wall thickness of preferably at least 3 mm has proven itself for these purposes.
- the screw threads with screws in the buccal and occlusal (possibly also lingual) areas can, if they are not required for the injection, also serve to better fix and retain the impression material.
- retention plates which are placed on the impression tray, as shown in Figure 2.
- the retention plates 9, 10, 11 have retention pins 12 which can be inserted into the functional bores 2 and possibly further holes 7 of the impression tray 1 and protrude into the interior of the groove of the impression tray 1.
- the ends of the pins 12 penetrate into the material and form depressions in it. It is important to ensure that the pins 12 do not protrude into the cavity of the negative mold. Therefore, the length of the pins 12 is to be selected such that they penetrate the wall of the preprint but do not penetrate it to the cavity of the negative mold.
- the retention plates 9, 10, 11 are removed from the spoon 1, the preprint is removed and, if necessary, disassembled to remove the model.
- the individual parts of the preprint are put back into the spoon and the retention plates are put back on. Due to the recesses in the wall of the preprint, the shape of the preprint can be reconstructed by plugging in the corresponding retention plates and used for the production of further models.
- buccal retention side plates 9 frontal retention side plates 10, an upper retention plate 11 for placement on the top of the spoon and lingual retention side plates (not shown in the figure).
- the retention plates 9, 10, 11 preferably contain a number of retention pins 12 corresponding to the functional bores 2 and possibly further bores 7 of the impression tray 1. This can prevent bores 7 or bores 2 impression material penetrates to the outside and makes it difficult to remove the preprint from the impression tray.
- the retention pins 12 are preferably made of a rigid material. They preferably have a diameter which is flush with that of the holes 7 and functional bores 2, that is to say in the plugged-on state they close the holes 7 and functional bores 2 tightly.
- pins 12 may taper forward. By protruding into the mass of the preprint, they serve as retention for the preprint mass.
- the frontal retention side plate 10 is bent at the two ends (towards the "distal") and is preferably somewhat elastic. As a result, the - usually rigid - pins 12 in the functional bores 2 and further bores 7 of the curved front part of the impression tray 1 can be lighter be introduced.
- a type of handle can be attached to a front panel for better handling, as shown in Figure 2.
- two tubes can form the lateral boundary.
- the tubes can expediently be chosen to be approximately 4 cm long and 5 mm wide on the inside.
- the lingual retention side plates (not shown in the figure) close the functional bores 2 and further bore 7 of the inner lingual side wall of the impression tray.
- the lower retention pin row of the lingual retention side plates should be shorter than the other pins for easier removal. Due to the strong curvature of the impression tray 1 in the front lingual region is preferably dispensed with pins 12 in the region of the central incisors.
- the lingual plate to be removed first is shorter than the other.
- the retention pins 12 of this plate are slightly inclined forward (mesial).
- an outstanding mount can be provided on the impression tray 1 in the lower region of the front curvature of the lingual retention plate, which compensates for the reduced retention due to the lack of some retention pins in this region.
- Additional means can be provided on the retention plates, in particular the buccal and lingual ones, which increase the retention of the retention plates on the impression tray 1.
- a spring 13 here a burr-shaped bar, can be provided on the upper edge of the retention plates.
- the upper edge is curved so that the plate engages over the upper side edge of the spoon 1 when it is attached.
- a groove 8 can be provided along the outer edge of the upper side of the spoon 1, in which the tongue 13 can engage.
- the retention side plates are wider than the spoon sides so that they can grip around the top of the spoon.
- the resulting circumferential bar can also serve as a fixation aid for the impression tray while the impression material is being bonded by the row of opposite teeth.
- No retention spring 13 is usually provided for the front panel.
- the retention springs 13 are released from the groove 8, for example by means of thumb pressure.
- a release fork can be pushed between the retention side plates 9, 10 and the spoon outside the retention pins 12 can be lifted from the impression material and the impression tray 1.
- the upper retention plate 11 can have additional retention elements 14 on the side opposite the side with the retention pins 12.
- Additional retention elements 14 serve to fix impression-> mass, which can be applied to the spoon back. This may be necessary to provide orientation aids, for example to align a so-called Herrlan bite pillow. As already mentioned, it is desirable for the patient to exert the same pressure on the spoon 1 as possible when producing the preprint and in the subsequent steps. For this purpose, a Herrlan bite cushion can be provided on the back of the spoon. This pillow then measures the pressure the patient exerts when biting.
- the retention side plates have bores whose position corresponds to the functional bores 2 in the impression tray 1 described above.
- the method according to the invention can also be carried out without difficulty even with attached retention side plates.
- the buccal retention side plates 9 in particular have corresponding bores. As in the impression tray, these are preferably positioned in the center, with the middle row of pins being replaced by the corresponding holes.
- the through-holes can each be surrounded by a sleeve which protrudes somewhat outwards in the direction of the vestibule.
- These sleeves can have an annular thickening at the outer end, so that there is something between the thickening and the outer surface of the retention side plate narrower shaft is created. If, for example, the sleeve protrudes outwards by approx. 5 mm and the ring-shaped thickening has a length of 2 mm, this results in an approx. 3 mm long shaft.
- These sleeves are used to attach the evacuation hose and the impression syringe.
- a so-called evacuation adapter such as a curved adapter, to which the evacuation hose is attached can be applied to the retention sleeve, which is provided for the evacuation.
- This can be a tube bent downwards and forwards, for example at 90 ° in each case.
- an adapter for the injection can be provided for this.
- this adapter has suitable cutouts on its flat underside for receiving the retention sleeve and lies flush against the outer surface of the retention side plate.
- this adapter has an expediently semi-tubular, preferably elastic clamping device, onto which the syringe can be attached laterally (syringe holder adapter).
- the preparation of the impression tray for carrying out the method according to the invention is expediently carried out outside the mouth.
- the preprint previously made is in the spoon and the corresponding retention side plates are attached. In the area where the injection is to be carried out, a retention side plate with perforations is used.
- An evacuation channel is provided for the evacuation at the corresponding point in the preprint.
- This piercing sleeve can also remain in the channel. In this way the canal is stabilized and a possible collapse during evacuation is prevented.
- This piercing sleeve can be funnel-shaped towards the tip.
- An adapter for the evacuation can be placed on the retention sleeve, which is provided for the evacuation.
- the retention sleeve can be provided with an appropriate seal, such as a rubber ring.
- the evacuation hose is then plugged onto this adapter. This is preferably transparent in order to be able to observe when the sucked-in impression material emerges from the evacuation channel.
- the evacuation hose is connected to a vacuum device, preferably to a vacuum pump customary in dental technology.
- a puncture sleeve is also provided at the corresponding point in the preprint. Since the injection channel should still be closed during the evacuation, this piercing sleeve should not yet reach the cavity. Only when the syringe is put on can the piercing sleeve be completely penetrated in the subsequent process by means of the syringe tip and the prepared injection channel can be opened. On the retentive On the sleeve, which is intended for injection, the syringe holder adapter, as described above, is attached.
- the impression tray with pre-impression prepared in this way is now placed in the patient's mouth and evacuated.
- the syringe filled with the impression compound which for better handling may have a correspondingly bent tip, is pushed into the lancing sleeve, the syringe snapping into the clamping device of the syringe adapter.
- the lancing sleeve is pressed into the pre-impression mass while opening the cavity of the negative mold and the punched-out impression mass pin is sucked into this cavity by the evacuation suction that is now discharging.
- This extremely small spigot is encased by the flowing impression material and does not affect the accuracy of the impression.
- the impression material is also sucked into the evacuation hose through the cavity. This process can be stopped by disconnecting the hose accordingly.
- the repressing is now carried out via the syringe plunger.
- the post-compression with the syringe plunger is supported by building up a counter pressure.
- the counterpressure can be built up by pushing the impression compound into the evacuation tube, removing it from the adapter, and pressing the impression compound back into the evacuation adapter by means of finger pressure.
- a lower-viscosity second impression material which differs from the actual impression material, can already be placed in the pre-impression in the pre-impression area and also in the sulcus, the area around the patient's teeth, before insertion into the mouth. This is possible because the evacuation takes only a few seconds claimed.
- the pre-impression is then placed in the mouth and proceed as described above.
- the impression spoon is removed from the mouth and the model is taken from the preliminary impression.
- This model can now be used directly as a template for producing the relevant tooth replacement from the desired material, for example by means of a scanning process, or the model itself can be used as a tooth replacement, for example as a temporary.
- the pre-impression even if it had to be cut for the removal of the model, can be fixed in the impression tray again by placing the retention side plates on it and used for further use if necessary.
- a copy of the model can be made with the preprint in order to obtain correction models or plastic copies that can be used directly as a provisional if the corresponding material is used.
- the preprint which still contains the model, is used with a suitable one
- Material such as plaster or a corresponding plastic material, poured out.
- the image of the jaw obtained in this way is referred to below as a cast model.
- the cast model is removed from the preprint and reworked if necessary.
- the preparation boundaries can be ground free in the cast model, if necessary the tooth stumps can be blocked out with wax and isolated.
- the preliminary impression if necessary after being fixed in the impression tray with, for example, the retention plates, is placed on the cast model and - as described above - a suitable impression compound is formed with a copy of the prototype model in the Cavity of the negative mold injected.
- the special impression spoon according to the invention can simultaneously be used as an oral irrigator.
- the impression tray contains an impression of the dentition of the lower jaw or upper jaw, the impression having buccal and lingual bores corresponding to the bores or injection channels of the impression tray.
- a supply and drain line system for the cleaning liquid are also provided.
- the insert consists of a rubber-like, permanently elastic material that should be relatively soft, for example a relatively soft silicone with a preferred Shore hardness of 30 to 50, which should be very durable, preferably addition-crosslinked.
- the insert is preferably designed to be removable from the impression tray, so that the tray can be used by different users, for whom an individually adapted insert is made in each case.
- the cleaning fluid is injected into the interdental spaces via the delivery system via the buccal injection channels and discharged through the lingual bores.
- the buccal injection channels are supplied via a feed line (inflow tube) which is in communication with the injection channels. muniert, the feed line having openings or branches to the individual injection channels.
- a corresponding system ensures that the cleaning fluid is drained off.
- the drainage system is preferably designed as a mirror image of the inflow system, the individual lingual bores opening into a drain which runs parallel to the feed line.
- the supply line as well as the discharge line for the two jaw halves unite in the front area of the jaw to form a single line, which can leave the mouth via a corresponding hole in the handle of the impression tray.
- the diameter for the supply and the discharge is not critical in itself, but should ensure an adequate supply and removal of detergent without being uncomfortable for the user.
- a diameter of approx.8.0 mm fulfills these purposes, for example.
- the impression tray used for an oral irrigator preferably contains an injection channel (bore) for each tooth. If necessary, it can of course also be more or less.
- the injection channels can have different diameters.
- the diameter can be 2.5 mm for molar teeth, 2 mm for premolar and canine teeth and 1.5 mm for front teeth.
- the cleaning liquid is preferably moved.
- the feed line can be connected to a connecting rod-translated electric motor, which moves the liquid back and forth by means of a pump piston.
- the speed can be selected variably.
- cleaning concentrate can be drawn into the displacement of the pump cylinder via a supply hose and backflow can be prevented by a check valve.
- the concentrate supply can be controlled as required. Due to the back and forth flooding of the liquid, an additional cleaning and massage effect is achieved - and depending on the frequency of the pump stroke.
- the continuous inflow of cleaning agent ensures that the interdental deposits are removed.
- the cleaning agent can be chosen arbitrarily and can be added if necessary.
- Water can be used as a cleaning agent, for example.
- a hose connected directly to the water line can lead the water directly into the supply line.
- a possible additive is a fluoride.
- a bite for example made of silicone, is preferably provided on the back of the spoon.
- a circumferential retention bar at a suitable height for example approx. 3 mm, can be provided on the spoon.
- the provision of a bite can prevent a lifting leg of the impression tray due to the hoses and / or the internal pressure generated by the liquid.
- a bulge can be provided, which is formed by the bite block and the spoon back to accommodate the drainage, which increases the wearing comfort
- An impression of the dentition is used as the insert, which contains bores at positions that match the injection channels in the impression tray, or preferably correspond in analogy to the injection channels in the impression for the injection process.
- a suitable insert for a user can be produced using a conventional plaster model of the bit, depending on the lower or upper jaw.
- a denture impression that extends to the fold of the envelope can be poured out with plaster.
- the denture impression can be made of silicone or a thioether, for example.
- Wax is applied to the interdental spaces of the plaster model in such a way that a later cavity for the cleaning liquid is created.
- the plaster model can be revised to ensure that the insert is sealed so that no fluid escapes and to protect certain areas, such as the gum line, if necessary.
- This increased adaptation can be brought about, for example, by appropriate etchings on the plaster model.
- the denture impression itself can be used for the production of the insert for the oral irrigator, by punching out corresponding parts for the cavities and depicting the waxed-up changes by relining them with easily flowing impression material.
- the oral irrigator according to the invention can also be used for bleaching teeth. Due to the aggressive nature of bleaching agents, precautions must be taken to protect sensitive areas or areas that should not be bleached from the bleaching agent.
- the gum spaces should not be used for lingual drainage, unlike when cleaning with non-aggressive liquids.
- the procedure for producing a bleaching insert that meets the above requirements can be as follows.
- a film (plastic splint) is first deep-drawn on the plaster model approx. 1 to 2 mm over the teeth to be bleached and the gum line is sanded clean to prevent irritation of the gums.
- the plastic splint is first checked for exact fit in the patient's mouth. Then a kind of "correction impression" can be made with thin-flowing material, for example silicone, to ensure that the gum line is covered by the silicone impression. The plastic splint is then removed from the impression and the wax is expelled to create the drainage channels, which is why If necessary, silicone residues are removed from the buccal injection channels as well as the drain channels.
- a kind of "correction impression” can be made with thin-flowing material, for example silicone, to ensure that the gum line is covered by the silicone impression.
- the plastic splint is then removed from the impression and the wax is expelled to create the drainage channels, which is why If necessary, silicone residues are removed from the buccal injection channels as well as the drain channels.
- Bleaching in the dentist's office is also very expensive, since not only are several hours required, but also a rubber dam must be placed in addition to other measures. The patient must also be supervised.
- a flavor-intensive liquid is injected into the impression used as an insert in the closed process.
- the patient can check the tight fit of the impression. For example, the patient can determine in this way how firmly he has to press the spoon into place so that no liquid escapes. Then, starting with a weak concentration, the bleach is added in batches.
- the bleach should not be rinsed, but the bleach should only be transported to the place of action and remain there for a short time, for example a few minutes, until it is replaced by fresh agent. Few drainage channels are sufficient for this. Also, not all teeth have to be bleached, for example in general the so-called 7s do not necessarily have to be bleached. This leaves sufficient drainage channels, which can be available for a quick removal of the bleaching agent if necessary, in order to stop the bleaching in an emergency.
- the drain can be closed outside the mouth, for which a clamp can be used, for example.
- the discharge line can be connected to a water line, for example, so that in the event that the bleaching is to be stopped or interrupted, water or another suitable liquid can be passed in counterflow via the discharge line and thus the bleaching agent via the injection channels is driven out.
- An impression tray which can also be used in a suitable manner for use as an oral irrigator or for bleaching, can be designed as follows:
- the injection channels can be formed by hollow screws which are screwed in on the buccal side of the impression tray and can have a diameter of approximately 6 mm and a length of approximately 10 mm.
- the banjo bolts in this embodiment protrude approximately 4 mm buccally beyond the outer surface of the spoon. With a bucket thickness of approx. 3 mm, the banjo bolts protrude 3 mm into the interior of the bucket.
- the minimum distance between the teeth shown and the tray should be at least 3 mm, preferably 4 to 5 mm.
- the banjo bolts point exactly at the buccal surfaces of the teeth, whereby they are preferably vertical in the middle. This position is most suitable for both prosthetic impressions and bleaching.
- the banjo bolts should be aimed as precisely as possible at the interdental spaces. This can be achieved by simply placing the tray forward by approx. 4 mm and by dispensing with distance stops, which can normally be used to ensure that an impression is free of distortion.
- the buccal channels can be used to insert interdental brushes for interdental cleaning.
- the number of injection and drainage channels can also be determined as required.
- the injection impression method according to the invention and the impression tray according to the invention can be used in a variety of ways in dental technology, in particular for the production of dentures in any configuration and in prosthetics.
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Dental Preparations (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU70499/01A AU7049901A (en) | 2000-04-29 | 2001-04-30 | Method and device for producing a dental prosthesis using injection impression |
EP01949302A EP1278474A2 (de) | 2000-04-29 | 2001-04-30 | Verfahren und vorrichtung zur herstellung von zahnersatz mittels injektionsabdruck |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10020894.0 | 2000-04-29 | ||
DE10020894A DE10020894B4 (de) | 2000-04-29 | 2000-04-29 | Verfahren zur Herstellung eines Zahnmodells mittels Injektionsabdruck |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001082818A2 true WO2001082818A2 (de) | 2001-11-08 |
WO2001082818A3 WO2001082818A3 (de) | 2002-04-18 |
Family
ID=7640241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/004864 WO2001082818A2 (de) | 2000-04-29 | 2001-04-30 | Verfahren und vorrichtung zur herstellung von zahnersatz mittels injektionsabdruck |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1278474A2 (de) |
AU (1) | AU7049901A (de) |
DE (1) | DE10020894B4 (de) |
WO (1) | WO2001082818A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2594227A3 (de) * | 2011-11-15 | 2015-04-08 | Ludwig-Maximilians-Universität München | Abformvorrichtung und Verfahren zur dreidimensionalen Erfassung von intraoralen Strukturen sowie eine entsprechende Einscanvorrichtung |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005042013B4 (de) * | 2005-09-02 | 2008-07-03 | Neuschäfer, Gerd | Injektionskorrekturabformlöffel |
US8602780B2 (en) | 2006-10-16 | 2013-12-10 | Natural Dental Implants, Ag | Customized dental prosthesis for periodontal or osseointegration and related systems and methods |
US10426578B2 (en) | 2006-10-16 | 2019-10-01 | Natural Dental Implants, Ag | Customized dental prosthesis for periodontal or osseointegration and related systems |
US7708557B2 (en) * | 2006-10-16 | 2010-05-04 | Natural Dental Implants Ag | Customized dental prosthesis for periodontal- or osseointegration, and related systems and methods |
US8454362B2 (en) | 2006-10-16 | 2013-06-04 | Natural Dental Implants Ag | Customized dental prosthesis for periodontal- or osseointegration, and related systems and methods |
US9539062B2 (en) | 2006-10-16 | 2017-01-10 | Natural Dental Implants, Ag | Methods of designing and manufacturing customized dental prosthesis for periodontal or osseointegration and related systems |
US9801697B2 (en) | 2011-03-18 | 2017-10-31 | Natural Dental Implants Ag | Integrated support device for providing temporary primary stability to dental implants and prosthesis, and related methods |
DE102007012540A1 (de) * | 2007-03-13 | 2008-09-18 | Neuschäfer, Gerd | Injektionskorrekturabformlöffel zur Abzweig- und/oder Reihenapplikation der Korrekturabformmasse |
US8905757B2 (en) | 2012-12-03 | 2014-12-09 | E. Kats Enterprises Ltd. | Method and apparatus for measuring a location and orientation of a plurality of implants |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3127091A1 (de) * | 1981-07-09 | 1983-01-27 | Bisico Ludwigs & Marten Ohg, 4800 Bielefeld | Verfahren zur herstellung eines gebissabdrucks und abdruckloeffel |
US4459107A (en) * | 1981-06-01 | 1984-07-10 | Ipco Corporation | Dental impression tray and method of use |
EP0210484A2 (de) * | 1985-07-27 | 1987-02-04 | Gerd Haker | Einteilige Form zur Herstellung und Aufnahme eines Kieferabgussarbeitsmodells zur Zahnersatzherstellung |
FR2603185A1 (fr) * | 1986-09-03 | 1988-03-04 | Segura Claude | Procede de prise d'empreinte dentaire sous pression et materiel associe |
FR2688999A1 (fr) * | 1992-03-31 | 1993-10-01 | Graf Robert | Porte-empreinte dentaire pourvu de moyens d'application des doigts. |
US5370533A (en) * | 1993-11-08 | 1994-12-06 | Bushnell; Raymond B. | Dental impression tray assembly and method of taking impressions |
DE19526017C1 (de) * | 1995-07-17 | 1996-08-01 | Frank Sahm | Verfahren zum Herstellen eines Gebißabdrucks sowie Abdrucklöffel und Set zur Durchführung des Verfahrens |
US5549476A (en) * | 1995-03-27 | 1996-08-27 | Stern; Sylvan S. | Method for making dental restorations and the dental restoration made thereby |
WO1997047256A1 (fr) * | 1996-06-10 | 1997-12-18 | Jadfard Rene | Porte-empreinte hydro-thermal a usage dentaire |
DE29717287U1 (de) * | 1997-09-29 | 1998-01-15 | Kiefer, Inge H., 66763 Dillingen | Abformungslöffel für die Zahnmedizin |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2617160A1 (de) * | 1976-04-20 | 1977-11-10 | Bisico Ludwigs & Marten Ohg | Vorrichtung fuer einen funktionsabdruck zur festlegung der kauebene und bissnahme zwecks erstellung einer totalen ober- und unterkieferprothese |
US4560351A (en) * | 1984-07-05 | 1985-12-24 | Osborne Travis H | Method of and apparatus for applying dental treatment fluid |
DE8707607U1 (de) * | 1987-05-27 | 1987-07-30 | Winkler, Hans-Michel, Dr., 29590 Rätzlingen | Bißnahmeeinheit |
DE9313561U1 (de) * | 1993-09-08 | 1993-12-02 | Becker, Wolfgang, 34260 Kaufungen | Zahntechnischer Löffel |
DE19505822A1 (de) * | 1995-02-21 | 1996-08-29 | Werner Puckert | Vorrichtung zur Abformung eines Alveolarfaches nach erfolgter Zahnextraktion |
-
2000
- 2000-04-29 DE DE10020894A patent/DE10020894B4/de not_active Expired - Fee Related
-
2001
- 2001-04-30 WO PCT/EP2001/004864 patent/WO2001082818A2/de not_active Application Discontinuation
- 2001-04-30 AU AU70499/01A patent/AU7049901A/en not_active Abandoned
- 2001-04-30 EP EP01949302A patent/EP1278474A2/de not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4459107A (en) * | 1981-06-01 | 1984-07-10 | Ipco Corporation | Dental impression tray and method of use |
DE3127091A1 (de) * | 1981-07-09 | 1983-01-27 | Bisico Ludwigs & Marten Ohg, 4800 Bielefeld | Verfahren zur herstellung eines gebissabdrucks und abdruckloeffel |
EP0210484A2 (de) * | 1985-07-27 | 1987-02-04 | Gerd Haker | Einteilige Form zur Herstellung und Aufnahme eines Kieferabgussarbeitsmodells zur Zahnersatzherstellung |
FR2603185A1 (fr) * | 1986-09-03 | 1988-03-04 | Segura Claude | Procede de prise d'empreinte dentaire sous pression et materiel associe |
FR2688999A1 (fr) * | 1992-03-31 | 1993-10-01 | Graf Robert | Porte-empreinte dentaire pourvu de moyens d'application des doigts. |
US5370533A (en) * | 1993-11-08 | 1994-12-06 | Bushnell; Raymond B. | Dental impression tray assembly and method of taking impressions |
US5549476A (en) * | 1995-03-27 | 1996-08-27 | Stern; Sylvan S. | Method for making dental restorations and the dental restoration made thereby |
DE19526017C1 (de) * | 1995-07-17 | 1996-08-01 | Frank Sahm | Verfahren zum Herstellen eines Gebißabdrucks sowie Abdrucklöffel und Set zur Durchführung des Verfahrens |
WO1997047256A1 (fr) * | 1996-06-10 | 1997-12-18 | Jadfard Rene | Porte-empreinte hydro-thermal a usage dentaire |
DE29717287U1 (de) * | 1997-09-29 | 1998-01-15 | Kiefer, Inge H., 66763 Dillingen | Abformungslöffel für die Zahnmedizin |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2594227A3 (de) * | 2011-11-15 | 2015-04-08 | Ludwig-Maximilians-Universität München | Abformvorrichtung und Verfahren zur dreidimensionalen Erfassung von intraoralen Strukturen sowie eine entsprechende Einscanvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
EP1278474A2 (de) | 2003-01-29 |
AU7049901A (en) | 2001-11-12 |
DE10020894A1 (de) | 2001-11-08 |
DE10020894B4 (de) | 2008-10-16 |
WO2001082818A3 (de) | 2002-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102014118231B3 (de) | Verfahren zur Herstellung einer Dentalprothese mit einer Schablone | |
EP1042993B1 (de) | Vorrichtung zum Herstellen von Zahnabdrücken | |
DE19945354C2 (de) | Verfahren zur Herstellung einer implantatgetragene Zahnprothese | |
EP3612131B1 (de) | Verfahren zur herstellung einer dentalprothese mit parallelen wurzeln der prothesenzähne | |
DE102007012584A1 (de) | Verfahren zur Kontrolle einer Präparation eines präparierten Zahns mit CAD-Verfahren | |
EP1261293B1 (de) | Verfahren zur präparation von zähnen | |
DE102012003811A1 (de) | Zahntechnisch-Zahnärztliches Verfahren und Zahntechnisch-Zahnärztliche Vorrichtung | |
EP1618853A1 (de) | Ausgleichsteil und Verfahren für die Vermessung von Zahnrestaurationen | |
DE102017113814B4 (de) | Verfahren zur Herstellung einer Dentalprothese mit definiertem Klebespalt | |
WO2001082818A2 (de) | Verfahren und vorrichtung zur herstellung von zahnersatz mittels injektionsabdruck | |
EP1901676B1 (de) | Verfahren und materialsatz zum herstellen von zahnersatzteilen | |
EP3223743A1 (de) | Bissnahmewerkzeug, bissnahmewerkzeugset sowie geeignetes verfahren zur bissregistrierung | |
EP3618759B1 (de) | Verfahren zur ermittlung von daten für die herstellung von zahnersatz | |
EP0574868A2 (de) | Apparatur zur Führung eines zahnärztlichen Instrumentes oder eines Messgerätes und Verfahren zur Präparation von Zähnen und zur Herstellung von Restaurationen | |
EP3232982B1 (de) | Ermitteln der räumlichen positionen und orientierungen von in einem kiefer eines patienten verankerten implantaten | |
DE202007014550U1 (de) | Konfektionierte Kaufläche | |
EP1304088A1 (de) | Verfahren und Vorrichtung zum Herstellen von Passkörpern zur Restauration von Zähnen | |
EP3705078B1 (de) | Verfahren zur herstellung eines individuellen abformlöffels | |
DE102021112178B4 (de) | Verfahren und Vorrichtung zur Herstellung einer Dentalprothese | |
EP3545904B1 (de) | Verfahren zur herstellung eines arbeitsmodells fuer dentalmedizinische zwecke aus einer digitalisierten abformung | |
DE102021120571A1 (de) | Bissverschlüsselungszahnmaterialabschleifschablone | |
DE19512625C2 (de) | Präparationsschleifer-Inlay-System | |
DE102014105884A1 (de) | Gingivaformer | |
DE102020124655A1 (de) | Zahnreihenmodell | |
DE19608546A1 (de) | Vorrichtung zum Herstellen von Zahnabdrücken |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
AK | Designated states |
Kind code of ref document: A3 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A3 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001949302 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2001949302 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2001949302 Country of ref document: EP |