CN105310786A - Composite orthodontic system and its manufacturing method - Google Patents
Composite orthodontic system and its manufacturing method Download PDFInfo
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- CN105310786A CN105310786A CN201410573221.8A CN201410573221A CN105310786A CN 105310786 A CN105310786 A CN 105310786A CN 201410573221 A CN201410573221 A CN 201410573221A CN 105310786 A CN105310786 A CN 105310786A
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Abstract
The invention provides a composite orthodontic system, comprising: a plurality of orthodontic sets, each having a cavity, which has a selected geometrical shape and positions a tooth gradually from a basic tooth state to an expected tooth state, wherein at least one of the orthodontic sets comprises more than two orthodontic devices having the same or substantially same geometric shapes. By the application of the composite orthodontic system, elastic stress can be guaranteed during use of the orthodontic devices, a correcting period is shortened, materials are saved and corrective comfort and effect are improved.
Description
Technical field
The application relates to a kind of compound orthodontic system and manufacture method thereof, more specifically, relates to a kind of compound stealthy orthodontic system and manufacture method thereof.
Background technology
In order to carry out medical science rectification to the tooth of patient, develop multiple orthodontic apparatus at present.Rescue for technology relative to traditional fixing bracket, novel invisalign technology does not need bracket and steel wire, but adopts a series of invisible orthotic device (also referred to as shell appliance).This stealthy dental appliance is made up of the elastic polymer material of safety, process of rescuing almost is completed other people in discovering, can not affect daily life and social activity; Wear because patient can pluck voluntarily, oral hygiene can conventional maintenance, and whole process of rescuing saves time and laborsaving.
Above-mentioned stealthy dental appliance is one group and has the polymeric shells can holding the cavity of tooth in inside, after the correction of the tooth that the geometry of the cavity of its accommodation tooth and this appliance will reach, state/arrangement adapts, therefore by using a series of dental appliance to make tooth reorientate.Generally speaking, make tooth navigate to final state from base state and comprise at least 4 steps successively, sometimes need to comprise at least 20 steps, for complicated case, also likely need to comprise the step of 40 or more.The stealthy dental appliance of each width needs to wear a period of time on the tooth of user, makes tooth marshalling gradually by having elastic shell appliance to tooth applying power.
In existing appliance manufacture method, as shown in Figure 1, first patient teeth is scanned, to obtain the basic dental phenomenon of patient.Then based on the basic dental phenomenon of patient, the numerical data of a series of revised dental phenomenon is produced by virtual orthodontic treatment design.And based on these data, a series of tooth model representing revised dental phenomenon is first manufactured according to the method for rapid shaping or the method for Digit Control Machine Tool, again with each tooth model for the corresponding denture appliance of formpiston manufacture, and generally speaking, rescue step for each rescuing in process, this denture appliance will be worn 14 days.
But in actual use, wear the Tooth Movement after with stealthy dental appliance and usually can not reach the result designed in advance.Such as, a width appliance, after use about a week, makes elastic stress weaken because of deformation, there is the deviation accumulation rescued in process simultaneously, thus cause the growth departing from and rescue the cycle of rectifying effect based on current machining accuracy.Therefore need again to do corresponding adjustment to original design during rescuing, even need Resurvey clinical data, get dental impressions, redesign and rescue scheme, again manufacture tooth model to manufacture new appliance.Thus cause the waste greatly of time, manpower and material.
Summary of the invention
Correspondingly, this application provides a kind of compound orthodontic system and manufacture method thereof, it can not increase under the condition even reducing the formpiston manufacturing dental appliance, ensure the elastic stress between the appliance operating period, shorten and rescue the cycle, save material, and comfort level and rectifying effect are rescued in raising.
Correspondingly, according to an aspect of the application, provide a kind of compound orthodontic system, it comprises: organize dental appliance more, these dental appliances have cavity tooth successively being navigated to the accommodation tooth expecting dental phenomenon from basic dental phenomenon of selected geometry, wherein, at least one group of dental appliance in described many group dental appliances comprises the dental appliance with identical or basic same geometry of more than two width.
According to a kind of embodiment of the application, when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.Preferably, the dental appliance that Orthodontic force is less is placed on the time of tooth the preceding paragraph suggestion of patient, then, after the time of described one section of suggestion terminates, replace the less dental appliance of described Orthodontic force with the dental appliance that Orthodontic force is larger and be placed on time of one section of suggestion again on the tooth of patient.
According to a kind of embodiment of the application, the variable thickness sample of the above dental appliance of described two width.Preferably, thinner dental appliance is placed on the time of tooth the preceding paragraph suggestion of patient, then after the time of described one section of suggestion terminates, thinner dental appliance described in replacing with thicker dental appliance the time of one section of suggestion again on the tooth being placed on patient.
According to a kind of embodiment of the application, the elastic modelling quantity of the material of dental appliances more than described two width is different.Preferably, dental appliance prepared by the material little by elastic modelling quantity is placed on the time of tooth the preceding paragraph suggestion of patient, then after the time of described one section of suggestion terminates, the dental appliance prepared by the described material little by elastic modelling quantity is replaced with the dental appliance prepared by the large material of elastic modelling quantity, and the time of one section of suggestion again on the tooth being placed on patient.
According to a kind of embodiment of the application, the post-processing approach of the above dental appliance of described two width is different, make when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
According to a kind of embodiment of the application, the adnexa that the above dental appliance of described two width increases is different, make when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
According to another aspect of the application, provide a kind of method for the manufacture of compound dental appliance, it comprises the following steps: a) obtain the tooth digitized data model representing orthodontic state; B) formpiston of dental appliance is manufactured according to described tooth digitized data model; And c) manufacture dental appliance based on the formpiston of described dental appliance, it is characterized in that, the formpiston based on same dental appliance manufactures the dental appliance with identical or basic same geometry of more than two width.
According to another aspect of the application, additionally provide a kind of method for the manufacture of compound dental appliance, it comprises the following steps: a) obtain the tooth digitized data model representing orthodontic state; B) appliance digitized data model is generated according to described tooth digitized data model; And the dental appliance with identical or basic same geometry of more than two width c) is manufactured based on described appliance digitized data model, it is characterized in that, dental appliances more than described two width is based on same teeth number of teeth digital data model manufacturing.
According to another aspect of the application, additionally provide a kind of using method of compound orthodontic system, it comprises the following steps: the time the first width dental appliance in one group of appliance being placed on tooth the preceding paragraph suggestion of patient, wherein said one group of appliance comprises the dental appliance with identical or basic same geometry of more than two width; And after the time of described one section of suggestion terminates, replace described first width dental appliance with the second secondary dental appliance in described one group of appliance and be placed on time of one section of suggestion again on the tooth of patient.
By compound orthodontic system recited above with and production and preparation method thereof, the quantity of formpiston manufacturing dental appliance can be reduced, save various manpower, material and time cost; And rescue step for each rescuing in scheme, by using the invisible orthotic device of more than two width to patient, the service time of each width invisible orthotic device is shortened, ensure that appliance has enough elastic forces during wearing, thus both shorten the cycle of rescuing, turn improve rectifying effect.
And, the invisible orthotic device of more than two width in each group is manufactured by the raw material of choice for use different-thickness or material, or different post-processing approachs or adnexa are increased to invisible orthotic devices more than two width in each group, and select different process sequence, make the precision of appliance, rescue comfort level and rectifying effect reaches maximization.
Accompanying drawing explanation
The above-mentioned and other feature of the application will by being described further below in conjunction with accompanying drawing and detailed description thereof.Should be understood that, these figures only show the some exemplary embodiment according to the application, therefore should not be considered to be the restriction to the application's protection domain.Unless stated otherwise, accompanying drawing needs not to be proportional, and wherein similar label represents similar parts.
Fig. 1 shows the schematic diagram of the method for the manufacture of dental appliance according to background technology;
Fig. 2 shows the flow chart of the method for the manufacture of dental appliance according to a kind of detailed description of the invention of the present invention;
Fig. 3 shows the flow chart of the method for the manufacture of dental appliance according to another kind of detailed description of the invention of the present invention;
Fig. 4 shows the schematic diagram of the compound appliance system according to a kind of detailed description of the invention of the present invention.
Detailed description of the invention
The accompanying drawing forming this description part is refer in the following detailed description.Description and the exemplary embodiment mentioned by accompanying drawing, only for being illustrative object, are not intended to the protection domain limiting the application.It will be understood by those skilled in the art that and also can adopt other embodiments many, and various change can be made to described embodiment, and do not deviate from purport and the protection domain of the application.Should be understood that, to illustrate and the various aspects of illustrated the application can arrange, replace, combine, are separated and design according to much different configurations at this, these different configurations are included in the application.
need the appliance manufacture method of formpiston
Fig. 2 shows the method for the manufacture of dental appliance according to a kind of detailed description of the invention of the present invention.
First, in step S101, obtain the tooth digitized data model representing orthodontic state.Here, " representing the tooth digitized data model of orthodontic state " refers to the computer digital data model being used to guide tooth model and manufacturing, and obtained tooth model is the threedimensional model of dental phenomenon (also can be described as tooth arrangement).Described orthodontic state comprises a series of revised dental phenomenon, and the corresponding tooth digitized data model of each dental phenomenon.Each dental phenomenon comprises rescues the geometry of some teeth of step and interdental position relationship corresponding to one, and therefore each corresponding tooth digitized data model comprises the digital data sets of geometry and the interdental position relationship representing some teeth.
In an exemplary specific embodiment, first physical tooth model (such as making Gypsum Fibrosum tooth model by impression taking) is made according to the state of the current dental phenomenon of patient or tooth and perienchyma's (as gingiva, facial soft tissue) thereof, again this physical tooth model is scanned, to generate the virtual tooth model (corresponding to basic dental phenomenon) of the initial condition representing patient teeth.Certainly, the image of tooth or tooth and perienchyma thereof is also directly obtained by optical scanning, tri-dimensional photographing, three-dimensional camera shooting or Medical CT scanning, by computer disposal to generate original virtual tooth model.This virtual tooth model can be digitized process and display.
Next, the virtual tooth model original based on this and target is rescued for patient teeth, what set at least one rescues parameter, rescues parameter automatically form a series of progressively progressive orthodontic state (also can be described as and expect dental phenomenon or the tooth arrangement model after rescuing) by computer system according to this original virtual tooth model and set at least one.Described a series of orthodontic state reflects carries out a series ofly rescuing the favourable change to tooth structure or arrangement after step to original tooth model.Generally speaking, whole rescue that process comprises at least one rescue step (such as comprise 20-40 rescue step), each is rescued step and corresponds to an orthodontic state, and the corresponding tooth digitized data model of each orthodontic state, therefore can be obtained by computer system and store a series of tooth digitized data model.
And, the present invention is not limited to based on original virtual tooth model and rescues target and progressively produce the method that the target representing tooth rescues state, can also by other method, such as by first to determine the digitized data model of tooth initial condition and represent the digitized data model of tooth final state, obtained the digitized data model of the representative orthodontic state in the present invention based on the method that the digitized data model of tooth initial condition and final state produces the digitized data model of a series of dental phenomenons represent centre by computer system.
Next, in step s 102, the tooth model (i.e. the formpiston of dental appliance) of physics is generated according to tooth data model.Namely according to the corresponding physical tooth model of the tooth data model manufacture of a series of tooth digitized data model.
Preferably, the formpiston of dental appliance is manufactured based on rapid shaping process.Rapid shaping technique can be divided into following several typical forming technology: laser fast forming (StereolithographyApparatus, SLA), layer separated growth (LaminatedObjectManufacturing, LOM), selective laser sintering (SelectedLaserSintering, SLS), Fused Deposition Modeling (FusedDepositionModeling, FDM), 3 D-printing manufacture (ThreeDimensionalPrinting, 3DP) etc.On moulding material, mainly high-molecular organic material, such as light-cured resin, nylon, wax etc. at present.Wherein laser fast forming SLA adopts laser pointwise illumination light-cured resin, induced material generation chemical change thus solidification method be shaped, layer separated growth LOM adopts cut foil (paper, ceramic foil, metal forming etc.), realize bonding under the pressure and heat transfer effect of hot-rolling by PUR between foil, superposition forming from level to level; Selective laser sintering SLS adopts laser pointwise illumination dusty material to make material powder melting, or the connection making the solid adhesive melting be coated on outside dusty material realize material is shaped, and Fused Deposition Modeling FDM is heating and melting spraying, progressively stack shaping wherein after thermoplastic forming material is sent into shower nozzle continuously.And 3 D-printing manufacture SDP is the method shaping adopting the method for similar inkjet printing to spray melted material stack shaping or pointwise sprinkling bonding agent adhesive powder powder material.
In a specific embodiment, SLA method is adopted to manufacture tooth model, specifically, in order to manufacture tooth model, based on the polyreaction of photosensitive resin, laser under the control of the computer, along each layering cross section profile of tooth model, liquid towards resin carries out point by point scanning, the thin resin layer by scanning is made to produce polyreaction, form line gradually by putting, the final solidification cross section forming a thin layer of tooth model, and the resin be not scanned keeps original liquid state.When one deck solidification is complete, self-powered platform moves the distance of a synusia thickness, and the resin surface had cured at last layer covers the new liquid resin of one deck again, in order to carry out scanning solidification again.One deck of new solidification is bonded on front one deck securely, so moves in circles, until whole tooth model manufactures complete.Typically, use the inswept photosensitive resin surface of mechanical blades, ensure that lower one deck is smooth resin bed.After tooth model is shaped, self-powered platform promotes and tooth model removes from equipment.Typically, this preliminary tooth model cleans subsequently in solvent such as acetone, the uncured liquid resin of this dissolution with solvents and can not dissolve the solid state medium had cured.Under being placed in high-intensity ultraviolet irradiation with back part, to complete solidification process, thus obtain tooth model, namely for the manufacture of positive model or the title formpiston of dental appliance.
It should be noted that, although describe rapid shaping treatment step of the present invention for laser fast forming SLA method in the present invention, but the present invention is not only confined to laser fast forming SLA method, but the quick molding method can applying other is to manufacture tooth model.
After formed tooth model (formpiston) by speed forming method, in step S103, dental appliance can be manufactured based on the formpiston of described dental appliance.
In a kind of detailed description of the invention, by hot-embossing equipment, by malleation press mold technology, (elastic polymer will be had by transparent polymer material, such as Merlon) the appliance diaphragm that forms suppresses on above-mentioned tooth model, to form housing, thus obtained dental appliance.But the method based on tooth model manufacture appliance of the present invention is not limited to hot-forming, can also utilize additive method, comes to manufacture dental appliance based on tooth model.
According to prior art, a tooth model (i.e. the formpiston of dental appliance), only for generating a width dental appliance, namely rescues step for each, only generates a tooth model, then utilizes this tooth model only to generate a width dental appliance.
But according to the present invention, step S103 comprises plural manufacture dental appliance sub-step.Now comprise two manufacture dental appliance sub-steps for step S103 to be described.
Exemplarily, step S103 comprises sub-step S1031 and S1032 (not shown).Wherein, in step S1031, based on this tooth model, the first high-molecular diaphragm is utilized to manufacture the first width dental appliance.
Then, in step S1032, again based on this same teeth tooth model, utilize the second high-molecular diaphragm to manufacture the second width dental appliance.Wherein, the second high-molecular diaphragm can be also can be dissimilar diaphragm with the diaphragm of the identical type of the first high-molecular diaphragm, below will elaborate.
So, because above-mentioned first secondary dental appliance and the second secondary dental appliance manufacture based on same formpiston, so the geometry of both inner chambers is identical or substantially identical.But the Orthodontic force of invisalign technology is not only relevant with the geometry of the inner chamber of appliance, also relevant with other factors.Therefore, by selecting different-thickness or the material of the first high-molecular diaphragm and the second high-molecular diaphragm, or carry out different post processings, or design different adnexaes to make above-mentioned first secondary dental appliance different with the Orthodontic force of the second secondary dental appliance, thus make when each the width appliance in described two width dental appliances is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.Below thickness, material, post processing and the adnexa coefficient of elasticity for dental appliance and the impact of Orthodontic force is listed respectively.
But it should be noted that, be illustrated although comprise two sub-steps for step S103 thus suppress two width appliances according to same formpiston, but clearly, the present invention is not limited thereto, according to the present invention, step S103 can comprise two or more sub-step, thus can suppress the above appliance of two width according to same formpiston.Although so be hereafter illustrated to suppress two width appliances according to same formpiston, its know-why, technical scheme and technical characteristic are equally applicable to manufacture and are greater than two width (such as three secondary, four width) appliance, no longer repeat at this.
A, different-thickness diaphragm is utilized to manufacture the different appliances of more than two width
First, the diaphragm of different-thickness has different coefficient of elasticity and stress.Such as, when use Biolon diaphragm (Germany produces), thickness is respectively when 1.0mm, 0.75mm, 0.5mm carry out Experiments of Machanics and can finds, thickness is that the elastic modelling quantity of the diaphragm of 1.0mm and maximum stress are maximum, and thickness is that the elastic modelling quantity of the diaphragm of 0.5mm and maximum stress are minimum.Therefore the mechanical property of material changes along with the change of material thickness, and material is thicker, its elastic modelling quantity and maximum stress larger, material is thinner, its elastic modelling quantity and maximum stress lower.Therefore, the same diaphragm of different-thickness has different mechanical properties, and the mechanical property of hot pressing membrane material and the thickness of material are directly proportional substantially.Maximum stress is directly proportional to elastic modelling quantity, and stress is larger, and modulus is larger, and the ability of opposing elastic deformation is stronger, and rigidity is larger, and elasticity is then less.The diaphragm of other brands or material also has above-mentioned characteristic, no longer repeats at this.
Therefore, in a kind of detailed description of the invention, in order to reach desirable rectifying effect, the material of suitable depth can be selected to manufacture the appliance of the priority use in one group of appliance respectively.Diaphragm is thinner, then elasticity is better, and patient wears the used time at the beginning can be more comfortable, and its stress (Orthodontic force) is less, make the movement rate of tooth and quantity of motion less, so be applicable to for making the appliance of previous utilization.And diaphragm is thicker, then elasticity is poorer, but its Orthodontic force is comparatively large, making the movement rate of tooth and quantity of motion comparatively large, so be applicable to the appliance for being produced on rear use, the Orthodontic force in later stage can be strengthened.
Further, in the process based on same formpiston successively compacting two width appliances, first suppress the appliance that will wear more afterwards, and then suppress the appliance that will more first wear.This is because, in production technology, resin material for the manufacture of formpiston may produce deformation in pressing process, make the precision of the appliance first suppressed higher, the shape of the appliance that is first suppressed can rescue at this state reached required for step Tooth close to hope more, so the appliance first suppressed is worn after being suitable for, rescue at this state reached required for step Tooth according to Computer Design to ensure that tooth can reach.
That is, in step S1031, based on same teeth tooth model, the first thicker high-molecular diaphragm is utilized to manufacture the first width dental appliance, then, in step S1032, again based on this same teeth tooth model, the second thinner high-molecular diaphragm is utilized to manufacture the second width dental appliance.And patient is when wearing, then after first wearing the second thinner secondary appliance 6-7 days, then wears the first thicker width appliance 6-7 days, namely complete one and rescue rescuing of step.
According to a kind of illustrative embodiments of the present invention, such as, in step S1031, based on same teeth tooth model, first high-molecular diaphragm of 1.0mm is utilized to manufacture the first width dental appliance, then, in step S1032, again based on this same teeth tooth model, second high-molecular diaphragm of 0.75mm is utilized to manufacture the second width dental appliance.When wearing, then first wear 0.75mm the second secondary appliance 6 or after 7 days, then wear the first width appliance 6 of 1.0mm or 7 days, namely complete one and rescue rescuing of step.Along with the appliance quantity rescuing step for one is two width from an amplitude variation, the Orthodontic force decline phenomenon caused because of each appliance deformation will reduce, so make to rescue step for one, actual needs wears can reducing total time (such as, may reduce to 12 days from 14 days) of appliance.
Certainly, same teeth tooth model also can be utilized to suppress the appliance of more than two width.According to another kind of illustrative embodiments of the present invention, step S103 comprises three and manufactures dental appliance sub-step.Such as, in step S1031, based on same teeth tooth model, first high-molecular diaphragm of 1.0mm is utilized to manufacture the first width dental appliance, then, in step S1032, again based on this same teeth tooth model, second high-molecular diaphragm of 0.75mm is utilized to manufacture the second width dental appliance, finally, in step S1033, again based on this same teeth tooth model, the third high molecule diaphragm of 0.5mm is utilized to manufacture the 3rd width dental appliance.When wearing, then first wear the 3rd secondary appliance of 0.5mm after 4 days, then wear the second secondary appliance 4 days of 0.75mm, then wear the first width appliance 4 days of 1.0mm, namely complete one and rescue rescuing of step.
B, different materials diaphragm is utilized to manufacture the different appliances of more than two width
In theory, the thermoplasticity polymolecular material with biocompatibility all can be used to manufacture invisible orthotic device.Such as, Merlon (PC) is a kind of water white indefiniteness thermoplastic, and its water white transparency is heat-resisting, shock resistance, fire-retardant, in common serviceability temperature, have good mechanical performance.And good processability, therefore it is a kind of common materials for the manufacture of invisible orthotic device.
Further, constantly likely utilize new material to prepare appliance.Such as, polyether-ether-ketone (PEEK) and PEKK (PEKK) belong to PAEK (PAEK) race, and this race is relatively new a series of high temperature resistant, nontoxic, the good polymer of thermoplasticity that comprise ketone and ether functional group.Such as PEEK resin also can stand the circulation autoclaving of nearly 3000 times at 134 DEG C, this characteristic make it can be used for production sterilizing requirement is high, the operation that needs Reusability and dental equipment.PEEK not only has the advantages such as quality is light, nontoxic, corrosion-resistant, or at present with the immediate material of skeleton, can organically combine with human body, so making skeleton by PEEK resin replacement metal is its another important application at medical field.In addition, PEEK is easy to extrude and molding is hit in injection, and processing characteristics is excellent, and shaping efficiency is higher.
And PEKK is the high polymer that the repetitive containing two ketonic bonds and an ehter bond in backbone structure is formed, belong to speciality polymer material, it has the good characteristic of PAEK adoption compound equally.
Further, the application future of polyformaldehyde (POM) is also very large.It is also referred to as acetal resin, has been introduced into polymethyl methacrylate traditional as an alternative.It has a higher proportional limit, makes the scope that its elastic behavior one is enough large.
Therefore, the submission of the application at that time or all likely find the material of multiple applicable manufacture invisible orthotic device future.Wherein the elastic modelling quantity of often kind of material and deformational stress all variant.Such as, when with PEEK, PEKK and POM for experimental subject, when these the three kinds of materials comparing same thickness affect for the Orthodontic force of tooth, can find that PEEK has the highest elastic modelling quantity, thus to tooth, there is maximum Orthodontic force.Next is PEKK and POM.Therefore different materials has different character, thus when it is for the preparation of appliance, the Orthodontic force produced is also different.
In a kind of detailed description of the invention, in order to reach desirable rectifying effect, can, based on same tooth model, different materials be selected to manufacture the appliance of more than two width respectively.The elastic modelling quantity of diaphragm material is less, then elasticity is better, and patient wears the used time at the beginning can be more comfortable, and its deformational stress (Orthodontic force) is less, make the movement rate of tooth and quantity of motion less, so be applicable to for making the appliance of previous utilization.And the elastic modelling quantity of diaphragm material is larger, then elasticity is poorer, but its stress is comparatively large, making the movement rate of tooth and quantity of motion comparatively large, so be applicable to the appliance for being produced on rear use, the Orthodontic force in later stage can be strengthened.
Further, described in part A as mentioned in the above, in the process based on same formpiston successively compacting two width appliances, first suppress the appliance that will wear more afterwards, and then suppress the appliance that will more first wear, to ensure precision.
It is noted herein that material behavior herein not only comprises the original material characteristic that raw material causes because of its component or brand, also comprises the material behavior day after tomorrow caused because of pretreatment.Such as, the diaphragm of the same thickness of same brand is after artificial saliva soaks two weeks, its maximum stress and elastic modelling quantity raise all to some extent, cause which creating the material behavior day after tomorrow, therefore when it is for suppressing appliance, the different material behavior of appliance that prepared appliance is just provided with and utilizes untreated diaphragm to suppress, the material behavior day after tomorrow that this type of causes because of pretreatment all belongs to the material behavior represented by the present invention.
C, increase last handling process are to manufacture the different appliances of more than two width
Its resilience force can be caused to change to the various pretreatment of diaphragm or invisible orthotic device or post processing (being referred to as " post processing ").Therefore, post processing can be carried out to change its coefficient of elasticity to diaphragm or invisible orthotic device.Such as, when invisible orthotic device is after artificial saliva soaks two weeks, its maximum stress and elastic modelling quantity raise all to some extent, and this may be because material absorbs water thickening after artificial saliva is soaked, and causes the mechanical property of material to increase.
So, according to another detailed description of the invention of the present invention, such as can suppress two identical dental appliances with same thickness and the diaphragm of material, then will wherein through artificial saliva or similar solution soaking two weeks, its maximum stress and elastic modelling quantity be raised all to some extent by a width appliance.Because the elasticity not through reprocessed appliance diaphragm is better, patient wears the used time at the beginning can be more comfortable, and its stress is less, make the movement rate of tooth and quantity of motion less, so be applicable to for first allowing patient use.And poor through the elasticity of reprocessed appliance diaphragm, but its stress is comparatively large, makes the movement rate of tooth and quantity of motion comparatively large, uses so be applicable to allowing after patient, and the Orthodontic force in later stage can be strengthened.
Further, described in part A as mentioned in the above, based in the process of same formpiston successively compacting two width appliances in S103, first suppress the appliance that will wear more afterwards, and then suppress the appliance that will more first wear, to ensure precision.Then, then increase post processing sub-step, the appliance worn more afterwards is carried out post processing (being such as immersed in artificial saliva), its elastic modelling quantity is increased.
Certainly, also the appliance worn more afterwards and the appliance more first worn all can be carried out post processing (being such as immersed in artificial saliva), and control the degree of post processing, such as be immersed in the concentration of time in artificial saliva or artificial saliva, as long as ensure that the elastic modelling quantity of the appliance worn more afterwards is greater than the appliance more first worn.
Therefore, each width that " applying different post-processing approachs " of using in the present invention has both comprised for the above appliance of two width in a group all applies post-processing approach, but the post-processing approach applied is different; Also comprise the wherein some width application post-processing approachs for the above appliance of two width in a group, but other pairs then do not apply post-processing approach, it is all included within the scope of the present invention.
D, increase adnexa are to manufacture the appliance of more than two width
The type of the adnexa on invisible orthotic device and shape also can cause its resilience force to change.Appliance can comprise various adnexa, and adnexa can comprise at least one in depression, aperture, opening and/or projection.
Such as, in a kind of specific embodiment, form micro-protuberance (it also can be described as and corrects side stalk) in the inner side of invisible orthotic device thin-walled, for generation side direction corrective force, adjust Orthodontic force distribution and improve anchorage condition.The position of correcting side stalk generally corresponds to the near zone that there is fluctuating place two tooth intersections or side of grinding one's teeth in sleep on appliance, and the active force of side stalk is that the frictional force obstructed between inner face and tooth side by side convex-concave and the side of two tooth intersections and side fluctuating place tooth jaw (mainly tooth) of grinding one's teeth in sleep is realized.
In another kind of specific embodiment, can also install rescue hook in the outside of appliance thin-walled, existing traction apparatus is attached on one or several teeth usually, is the very not rational anchorage form of one.And hook of rescuing of the present invention can be arranged on the thin-walled of dental appliance, it can be integrally formed with appliance, also can separately be shaped and link together.The design of hook, except the requirement that hook method for designing conveniently can meet traction, also will take into full account that the resilience force of additional correction power and appliance appliance being produced the counteracting force of pull strength on hook under using state additional elastic deformation produces affects the extra traction produced for traction apparatus.In fact rise correct and draw be the coupling of these power, utilize rightly these two kinds of additional forces can be formed the distribution of better anchorage and more reasonably corrective force and pull strength distribute, thus obtain better rectifying effect.
In another specific embodiment, on appliance, the sidewall of appliance such as, can also form multiple opening, for adjusting the distribution of Orthodontic force.The shape of opening, position and size are determined according to the Spreading requirements design of corrective force.In general, the elastic deformation of generation in a state of use that opening is positioned on appliance sidewall is mostly relatively little, or need produce less or not produce the region of corrective force according to treatment, also can be positioned at the occlusal surface of appliance, the size and shape of opening is determined according to the size and shape of respective regions.
The ridge, above-mentioned rectification side, hook and opening play the distribution effect of adjustment corrective force, and it after utilized pressing diaphragm to make appliance blank by formpiston, then can install and repair the rectification ridge, side or hook, or carries out processing and the finishing of opening again.
So, according to another detailed description of the invention of the present invention, such as, in S103, two identical dental appliances can be suppressed with same thickness and the diaphragm of material, then increase attachment design sub-step, such as, a width appliance increases opening to reduce its Orthodontic force wherein.Because the Orthodontic force with the appliance of opening is less, patient wears the used time at the beginning can be more comfortable, and its stress is less, make the movement rate of tooth and quantity of motion less, so be applicable to for first allowing patient use.And the Orthodontic force without the appliance of opening is comparatively large, make the movement rate of tooth and quantity of motion comparatively large, use so be applicable to allowing after patient, the Orthodontic force in later stage can be strengthened.
Again such as, two identical dental appliances can be suppressed with same thickness and the diaphragm of material, then a width appliance increase hook to produce side direction Orthodontic force wherein.Then, as required, patient can be allowed first to wear appliance not with hook, then after 6-7 days, then wear the appliance 6-7 days of band hook, make rectifying effect optimization.
And, various adnexa (not only comprise cited various adnexa here but also after comprising can applicable various adnexa) can according to practical situation combination in any, with according to same formpiston, after suppressing two identical dental appliances with same thickness and the diaphragm of material, the appliance that obtained two width have different Orthodontic force is carried out by increasing adnexa, and in use reasonable arrangement wears order, makes rectifying effect maximize.
Further, use in the present invention " with/increase different adnexa " each width both comprised for the above appliance of two width in a group all increases adnexa, but the adnexa increased is different; Also the wherein some width comprised for the above appliance of two width in a group increase adnexa, but other pairs then do not increase adnexa, and it is all included within the scope of the present invention.
It should be noted that in actual applications, both can by considering separately the single method in above A, B, C, D method, also the multiple methods in the above method of cross-application can reach optimum efficiency.Such as, thickness and all different appliance of material of more than two width can be prepared based on same teeth tooth model, or variable thickness sample can be prepared and different appliance of attachment design etc.Various combination is all included within the scope of the present invention.
In sum, according to the appliance manufacture method of above-mentioned detailed description of the invention of the present invention, step is rescued for one, a width invisible orthotic device will be suppressed by a tooth physical model and be improved to manufacture one group of appliance, it comprises at least two width (preferred 2-4 is secondary) dental appliance, thus decrease the design of the data model corresponding with tooth physical model, decrease the processing quantity of tooth physical model, and by selecting different materials, and/or the diaphragm of thickness manufactures dental appliance, or process diaphragm and appliance by different disposal means, or for dental appliance increases different adnexa, with the appliance of the different Orthodontic force based on same formpiston manufacture at least two, and reasonable arrangement wears order, thus rectifying effect and appliance comfort level are all improved, and save manufactured materials and the time of formpiston, also shorten the time of rescuing.
do not need the appliance manufacture method of formpiston
The manufacture process of appliance shown in Fig. 2 is only a kind of exemplary technique, and those skilled in the art can make various change to it.Such as, also can generate former (negative norm type) data based on described tooth target state data, directly there is by rapid shaping technique manufacture based on above-mentioned former data the invisible orthotic device of respective shapes.
Fig. 3 shows the example process for being manufactured the method for dental appliance by " Direct Manufacture Process " according to another kind of detailed description of the invention of the present invention.
As stated in the Background Art, the current manufacture method about dental appliance is all by first manufacturing tooth model, then appliance is manufactured by hot-forming mode, but this process need first manufactures the tooth model of physics, therefore required time is very long, and need extra consumption to manufacture the material of tooth model of physics, and be unfavorable for manufacturing there is special shape-aided or the dental appliance of adnexa.
So, in the present invention, also proposed a kind of by " Direct Manufacture Process ", rescue step for each, manufacture the method for the above dental appliance of two width.As shown in Figure 3, first, in step s 201, the tooth digitized data model representing orthodontic state is obtained.With reference to step S101 above, no longer can repeat at this about the method specifically how obtaining the tooth digitized data model representing orthodontic state.
Next, can generate according to described tooth digitized data model the appliance digitized data model representing dental appliance shape in step S202.Because dental appliance is designed to have the geometry of the cavity holding tooth, namely it is consistent with on the jaw corresponding to appliance or many teeth substantially, can hold or close to the reverse shape copying every tooth.
Therefore, first can based on the formpiston type of the representative orthodontic state obtained in step S201, by the method for traditional computer digital animation, the method of such as computer-aided design (CAD), by offseting out from the crown surfaces of each tooth or distance about 0.05mm or more, obtain the digitized data model of the inner surface of the dental appliance (former type) that representative " coincide " with the basic phase of the outline of this orthodontic state.
Specifically, first, the fundamental digital data representing the inner surface geometry of appliance cavity can be obtained according to the digitized data model representing orthodontic state, further, determine the thickness of appliance, such as, the thickness that can set appliance is 0.5-1 millimeter, but this thickness can be different according to making material and the difference rescuing requirement.
Next, in step S203, directly appliance digitized data model is converted to dental appliance by rapid shaping process.
The quick molding methods such as 3DP can be manufactured according to above described laser fast forming SLA, layer separated growth LOM, selective laser sintering SLS, Fused Deposition Modeling FDM and 3 D-printing to process the appliance digitized data model be layered, to manufacture the dental appliance of physics.Such as, in a kind of detailed description of the invention, the method adopting 3 D-printing to manufacture 3DP manufactures the physical model of dental appliance.
Further, the detail performing above-mentioned S201-203 step according to the detailed description of the invention of A ' to E ' is below illustrated.
A ', according to a kind of detailed description of the invention of the present invention, in described step S202, according to same teeth tooth digitized data model, generate the plural appliance digitized data model with different-thickness, thus in step S203, manufacture the dental appliance of more than two width of different-thickness.Namely can carry out fine adjustment to the digitized data model of the basic dental appliance that representative and the outline phase of this orthodontic state " are coincide ", design the plural appliance digitized data model with different-thickness personalizedly.
Such as, set first dental appliance digitized data model thinner, second dental appliance digitized data model is thicker, thus makes first of prepared physics the secondary dental appliance thinner, and the second secondary dental appliance is thicker.And patient is when wearing, then after first wearing the second thinner secondary appliance about a week (6-7 days), then wears the first thicker width appliance about one week, namely complete one and rescue rescuing of step.
B ' and according to another detailed description of the invention of the present invention, in described step S202, rescue step for each, only generate an appliance digitized data model, but in step S203, utilize the material of dual extension-compression modulus to manufacture the dental appliance of more than two width.And can for the different parts of different dental and/or same tooth, the material of individualized selection dual extension-compression modulus, make the resilience force produced when elastic deformation because of appliance suffered by different teeth different, thus control the size of the Orthodontic force be applied in different dental, thus control translational speed and the amount of movement of different dental.
Such as, the first width dental appliance prepared by the material utilizing elastic modelling quantity large, and the second secondary dental appliance prepared by the material utilizing elastic modelling quantity little.And patient is when wearing, then first wears the second little secondary appliance of elastic modelling quantity after about one week, then wear the first large width appliance of elastic modelling quantity about one week, namely complete one and rescue rescuing of step.
C ' and according to another detailed description of the invention of the present invention, post processing sub-step is added in described step S203, for the obtained above dental appliance of two width, apply different post-processing approachs, make the obtained above dental appliance of two width have different Orthodontic force.Concrete post-processing approach with reference to C part above, no longer can repeat at this.
D ' and according to another detailed description of the invention of the present invention, attachment design sub-step is added in described step S202, based on same tooth digitized data model, generate the plural appliance digitized data model being added with adnexa, thus in step S203, manufacture the dental appliance more than with two width of different adnexa.
Specifically, can in described step S202, step is rescued for one, basic appliance digitized data model is generated according to a tooth digitized data model, then on this basic appliance digitized data model, increase the digitized data model of adnexa, to design the plural appliance digitized data model with different adnexa, thus in step S203, manufacture the dental appliance more than with two width of different adnexa.
E ' and according to another detailed description of the invention of the present invention, attachment design sub-step is added in described step S203, after directly manufacturing the appliance of more than two width according to same appliance digitized data model, carry out adnexa processing and finishing again, make adnexa that the dental appliance of more than described two width increases different.
In sum, according to the method for direct manufacture dental appliance of the present invention, step is rescued for each, calculating is only needed to determine a tooth digitized data model, formpiston just can not be needed directly to manufacture the dental appliance of the different Orthodontic force of two width, thus accelerate the design of the scheme of rescuing, and reasonable arrangement wears order, thus rectifying effect and appliance comfort level are all improved, and shorten the time of rescuing.
appliance and using method thereof
Obtain the dental appliance of many groups successively as shown in Figure 4 according to said method, these dental appliances have cavity tooth successively being navigated to the accommodation tooth expecting dental phenomenon from basic dental phenomenon of selected geometry.Wherein each group dental appliance rescues step corresponding to designed by computer, patient successively wears each group of appliance by rescuing plan according to substep, make tooth successively navigate to expectation dental phenomenon from basic dental phenomenon, thus reach the object rescued.
Further, according to the present invention, each the group dental appliance in described many group dental appliances comprises the dental appliance with identical or basic same geometry of more than two width.Wherein when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
The dental appliance that Orthodontic force is less is placed on the time of tooth the preceding paragraph suggestion of patient, then, after the time of described one section of suggestion terminates, replace the less dental appliance of described Orthodontic force with the dental appliance that Orthodontic force is larger and be placed on time of one section of suggestion again on the tooth of patient.
Such as, according to a detailed description of the invention, rescue step for one of them or several, comprise one group of two width appliance.In one group first secondary invisible orthotic device uses 6-7 days continuously, then changes the invisible orthotic device that another pair has an identical or basic same geometry and uses 6-7 days continuously again.And then wear next group appliance, until wear last group appliance.
According to another detailed description of the invention, rescue step for one of them or several, comprise one group of three width appliance.In one group first secondary invisible orthotic device uses 4 days continuously, then change the invisible orthotic device that the second pair has an identical or basic same geometry and use 4 days continuously again, finally change the invisible orthotic device that the 3rd pair has an identical or basic same geometry and use 4 days continuously again.And then wear next group appliance, until wear last group appliance.
According to another detailed description of the invention, rescue step for one of them or several, comprise one group of four width appliance.In one group first secondary invisible orthotic device uses 3 days continuously, then change the invisible orthotic device that the second pair has an identical or basic same geometry and use 3 days continuously again, then change the invisible orthotic device that the 3rd pair has an identical or basic same geometry and use 3 days continuously again, finally change the invisible orthotic device that fourth officer has an identical or basic same geometry and use 3 days continuously again.And then wear next group appliance, until wear last group appliance.
It should be noted that many groups appliance that is used required for rescuing in process, namely often can organize the dental appliance with identical or basic same geometry that appliance includes more than two width; Also can be the wherein at least one group of dental appliance with identical or basic same geometry comprising more than two width, and other be often organized and still only include a width appliance.
In sum, compared with prior art, the second mate rescuing the step in scheme or three secondary or fourth officer invisible orthotic devices that are obtained by described manufacture method is used to patient, the wear time of each pair can shorten to 3 ~ 7 days by common 14 days, ensure that invisible orthotic device has enough elastic stresses during wearing, thus predetermined rectifying effect can be reached, substantially reduce again and wholely rescue the cycle, be thus conducive to the popularization of invisible orthotic device in malocclusion PATIENT POPULATION.And utilize same teeth tooth data model to prepare the appliance that two width have different Orthodontic force, not only save material and time, but also improve rectifying effect and rescue comfort level.
Although disclose various aspects and the embodiment of the application at this, other aspects and embodiment are also apparent to those skilled in the art.Various aspects disclosed herein and embodiment are only for illustration of object, and unrestricted object.The protection domain of the application and purport are determined by means of only accompanying claims.
Equally, each chart can illustrate exemplary architecture or other configurations of disclosed method and system, and it contributes to understanding the Characteristic and function that can be included in disclosed method and system.Claimed invention is not limited to shown exemplary architecture or configuration, and desired feature can realize with various alternative architecture and configuration.In addition, for flow chart, functional descriptions and claim to a method, square frame order given here should not be limited to be implemented with the various embodiments performing described function, unless explicitly pointed out within a context with same order.
Unless otherwise expressly stated, term used herein and phrase and variant thereof all should be interpreted as open, instead of restrictive.In some instances, such as the autgmentability vocabulary that " one or more ", " at least ", " but being not limited to " are such and the appearance of phrase or other similar terms should not be construed as in the example may not having this autgmentability term intention or need to represent the situation of constriction.
Claims (30)
1. a compound orthodontic system, it comprises:
Organize dental appliance, these dental appliances have cavity tooth successively being navigated to the accommodation tooth expecting dental phenomenon from basic dental phenomenon of selected geometry more,
Wherein, at least one group of dental appliance in described many group dental appliances comprises the dental appliance with identical or basic same geometry of more than two width.
2. the system as claimed in claim 1, is characterized in that, when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
3. system as claimed in claim 2, it is characterized in that, the dental appliance that Orthodontic force is less is placed on the time of tooth the preceding paragraph suggestion of patient, then, after the time of described one section of suggestion terminates, replace the less dental appliance of described Orthodontic force with the dental appliance that Orthodontic force is larger and be placed on time of one section of suggestion again on the tooth of patient.
4. the system according to any one of claim 1-3, is characterized in that, the variable thickness sample of the above dental appliance of described two width.
5. system as claimed in claim 4, it is characterized in that, thinner dental appliance is placed on the time of tooth the preceding paragraph suggestion of patient, then after the time of described one section of suggestion terminates, thinner dental appliance described in replacing with thicker dental appliance the time of one section of suggestion again on the tooth being placed on patient.
6. the system according to any one of claim 1-3, is characterized in that, the elastic modelling quantity of the material of dental appliances more than described two width is different.
7. system as claimed in claim 6, it is characterized in that, dental appliance prepared by the material little by elastic modelling quantity is placed on the time of tooth the preceding paragraph suggestion of patient, then after the time of described one section of suggestion terminates, the dental appliance prepared by the described material little by elastic modelling quantity is replaced with the dental appliance prepared by the large material of elastic modelling quantity, and the time of one section of suggestion again on the tooth being placed on patient.
8. the system according to any one of claim 1-3, it is characterized in that, the post-processing approach of the above dental appliance of described two width is different, make when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
9. the system according to any one of claim 1-3, it is characterized in that, the adnexa that the above dental appliance of described two width increases is different, make when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
10., for the manufacture of a method for compound dental appliance, it comprises the following steps:
A) the tooth digitized data model representing orthodontic state is obtained;
B) formpiston of dental appliance is manufactured according to described tooth digitized data model; And
C) formpiston based on described dental appliance manufactures dental appliance,
It is characterized in that, the formpiston based on same dental appliance manufactures the dental appliance with identical or basic same geometry of more than two width.
11. methods as claimed in claim 10, is characterized in that, in step b) in, the formpiston of described dental appliance is manufactured by rapid shaping process.
12. method as claimed in claim 10, is characterized in that, in step c) in, utilize the formpiston of described dental appliance to suppress appliance diaphragm, to obtain described dental appliance.
13. methods as claimed in claim 10, is characterized in that, when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
14. methods as claimed in claim 13, it is characterized in that, in step c) in, first manufacture the dental appliance that in the dental appliance of more than described two width, Orthodontic force is larger, and then manufacture the less dental appliance of Orthodontic force based on the formpiston of same dental appliance.
15. methods according to any one of claim 10-14, it is characterized in that, the variable thickness sample of dental appliances more than described two width, and in step c) in, first manufacture dental appliance thicker in the dental appliance of more than described two width, and then based on the thinner dental appliance of the formpiston manufacture of same dental appliance.
16. methods according to any one of claim 10-14, it is characterized in that, the elastic modelling quantity of the material of dental appliances more than described two width is different, and in step c) in, the material first utilizing elastic modelling quantity large manufactures dental appliance, and then based on the formpiston of same dental appliance, the material utilizing elastic modelling quantity little manufactures dental appliance.
17. methods according to any one of claim 10-14, is characterized in that, at described step c) in add post processing sub-step, for the obtained above dental appliance of two width, apply different post-processing approachs.
18. methods according to any one of claim 10-14, is characterized in that, at described step c) in add attachment design sub-step, make adnexa that the dental appliance of more than described two width increases different.
19. 1 kinds of methods for the manufacture of compound dental appliance, it comprises the following steps:
A) the tooth digitized data model representing orthodontic state is obtained;
B) appliance digitized data model is generated according to described tooth digitized data model; And
C) dental appliance with identical or basic same geometry of more than two width is manufactured based on described appliance digitized data model,
It is characterized in that, dental appliances more than described two width is based on same teeth number of teeth digital data model manufacturing.
20. methods as claimed in claim 19, is characterized in that, in step c) in, manufacture described dental appliance by rapid shaping process.
21. methods as claimed in claim 19, is characterized in that, when each the width appliance in the above dental appliance of described two width is worn on the tooth of patient respectively, each width appliance described is different for the Orthodontic force of tooth.
22. methods according to any one of claim 19-21, it is characterized in that, at described step b) in, according to same teeth tooth digitized data model, generate and there is the plural appliance digitized data model of different-thickness, thus in step c) in manufacture the dental appliance of more than two width of different-thickness.
23. methods according to any one of claim 19-21, it is characterized in that, at described step c) in, manufacture the dental appliance of more than two width according to same appliance digitized data model, and the different material of elastic modelling quantity is used to dental appliances more than described two width.
24. methods according to any one of claim 19-21, is characterized in that, at described step c) in add post processing sub-step, for the obtained above dental appliance of two width, apply different post-processing approachs.
25. methods according to any one of claim 19-21, it is characterized in that, at described step b) in add attachment design sub-step, based on same tooth digitized data model, generate the plural appliance digitized data model being added with adnexa, thus in step c) in manufacture with dental appliances more than two width of different adnexa.
26. methods according to any one of claim 19-21, is characterized in that, at described step c) in add attachment design sub-step, make adnexa that the dental appliance of more than described two width increases different.
The using method of 27. 1 kinds of compound orthodontic systems, it comprises the following steps:
The first width dental appliance in one group of appliance is placed on the time of tooth the preceding paragraph suggestion of patient, wherein said one group of appliance comprises the dental appliance with identical or basic same geometry of more than two width; And
After the time of described one section of suggestion terminates, replace described first width dental appliance with the second secondary dental appliance in described one group of appliance and be placed on time of one section of suggestion again on the tooth of patient.
28. methods as claimed in claim 27, is characterized in that, the Orthodontic force of described first width appliance is less than the Orthodontic force of described second secondary appliance.
29. methods as claimed in claim 28, is characterized in that, the wall of described first width appliance is thinner, and the wall of described second secondary appliance is thicker.
30. methods as claimed in claim 27, is characterized in that, the time of described one section of suggestion and the time of described one section of suggestion are again 4-7 days.
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| CN113208751A (en) * | 2020-01-20 | 2021-08-06 | 上海阔鸿信息科技有限公司 | Shell-shaped appliance and manufacturing method thereof |
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