WO2009035142A1 - Système de mesure/d'usinage de greffe d'interposition dentaire - Google Patents

Système de mesure/d'usinage de greffe d'interposition dentaire Download PDF

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Publication number
WO2009035142A1
WO2009035142A1 PCT/JP2008/066909 JP2008066909W WO2009035142A1 WO 2009035142 A1 WO2009035142 A1 WO 2009035142A1 JP 2008066909 W JP2008066909 W JP 2008066909W WO 2009035142 A1 WO2009035142 A1 WO 2009035142A1
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WO
WIPO (PCT)
Prior art keywords
shape
virtual
data
dental prosthesis
light
Prior art date
Application number
PCT/JP2008/066909
Other languages
English (en)
Japanese (ja)
Inventor
Hiroaki Hamada
Satoshi Nakao
Mitsuaki Masuda
Tatsuo Usuda
Original Assignee
Kabushiki Kaisya Advance
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kabushiki Kaisya Advance filed Critical Kabushiki Kaisya Advance
Priority to CN200880106880A priority Critical patent/CN101801307A/zh
Priority to JP2009532265A priority patent/JPWO2009035142A1/ja
Publication of WO2009035142A1 publication Critical patent/WO2009035142A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0006—Production methods
    • A61C13/0009—Production methods using a copying machine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns
    • 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
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or 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
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0093—Workpiece support

Definitions

  • Japanese Patent Application Laid-Open No. 2 0 4-3 4 4 6 5 7 proposes an improvement of a semi-finished product holding part for manufacturing a dental fitting.
  • Japanese Laid-Open Patent Publication No. 5-4 9 6 5 1 proposes a device for designing a dental prosthesis.
  • Japanese Patent Laid-Open No. 2-2 7 4 4 5 6 discloses that a blank is useful for manufacturing inserts for artificial tooth structures. A method and apparatus for manufacturing an article is proposed.
  • International Publication No. 2 0 0 5/0 1 6 1 7 1 Pamphlet proposes a semi-finished product for manufacturing dental prosthesis and its manufacturing method.
  • the denture prosthesis obtained by processing the processing block shortens the processing time due to the diameter of the end mill used as a grinding tool.
  • fine irregularities that can be formed on the so-called occlusal surface cannot be formed during processing. If fine irregularities cannot be formed on the occlusal surface, the resulting prosthesis is not in a natural state of teeth, and it is difficult to say that it is not preferred by the user because it has poor biting.
  • the CAD / CAM method has problems in both contact and non-contact methods, and measures the shape according to various oral conditions. Requires complicated procedures.
  • the contact type is a method of moving the probe fixed in the Z-axis direction in the x, y, and z-axis directions, and can obtain highly accurate shape information in the contact range, but the probe extends in the z-axis direction. It takes only a long time to measure the shape in the area where the tip of the metal touches, compared to non-contact.
  • a non-contact type for example, a method using a stereo camera has a configuration in which the positional relationships of a plurality of light receiving cameras are determined numerically, and a moiré method has a numerical positional relationship.
  • the surface shape measurement by either a contact type or non-contact type measurement device can be performed sufficiently, but the actual occlusal surface is the result shape based on the complex jaw movement called mastication,
  • the occlusal surface has a complex shape.
  • a prosthesis is formed by a virtual operation in a tooth defect part by a computer and a block is processed, it is necessary to adjust the shape on the occlusal surface.
  • an object of the present invention is to provide a dental prosthesis measuring and processing system capable of easily and accurately manufacturing a dental prosthesis by three-dimensionally measuring a tooth defect portion outside the oral cavity and in a non-contact manner. .
  • the present invention provides a dental prosthesis measurement process capable of accurately grasping a denture mounting portion of an implant after tilted implantation outside the cavity and easily and accurately producing a denture (dental prosthesis) according to the tilt.
  • the objective is to propose a dental prosthesis in which the installed denture has a more natural occlusal surface.
  • the object of the present invention is to further realize a heel-up-less technique that indirectly models the state of the oral cavity and indirectly obtains the shape of the prosthesis from the state of the defect in the tooth defect.
  • the objective is to provide a dental prosthesis measurement and processing system that can be implemented in a reduced amount of time.
  • the present invention realizes an efficient and quick-up technique that can be expected to be processed in a short time, and virtually creates a prosthesis, which can be efficiently fitted to an actual defect.
  • the first aspect of the present invention is a dental prosthesis measurement process that measures the shape of a virtual dentition having a missing portion in a first manner in a three-dimensional manner without contact, and processes the dental prosthesis based on the measurement result. It is a system, and the following means: Creates shape data of a virtual dentition having a shape of a missing portion and its adjacent teeth, and shape data of an opposed occlusal surface of an opposing tooth to be arranged to face the virtual dentition 3D shape creation means,
  • the virtual prosthesis shape data is virtually combined and adjusted with the virtual prosthesis shape data, and the virtual dentition shape data is combined with the virtual prosthesis shape data.
  • the shape data of the opposite occlusal surface is contacted, masticated and adjusted, and the shape data of the opposite occlusal surface is subjected to a virtual motion to virtually perform jaw movement on the shape data of the virtual dentition.
  • the state of the jaw movement is displayed on the screen and the optimal prosthetic shape in the virtual dentition is determined. Occlusal adjustment means, and
  • Block processing means for forming the dental prosthesis by adding a processing block based on the shape data of the optimal prosthetic shape
  • a dental prosthesis measuring and processing system comprising:
  • the opposing occlusal surfaces of the virtual dentition and the opposing teeth are dental models, respectively.
  • the jaw movement is preferably performed in conjunction with the movement of the man-machine interface connected to the computer. Further, it is preferable that the virtual motion such as the pendulum motion is performed in an angle range of ⁇ 3 ° to 10 ° around the radius 30 to 60 mm from the crown surface of the virtual dentition. Furthermore, it is preferable that the virtual movement is performed in the virtual dentition perpendicular to the dentition direction.
  • Light receiving means that receives reflected light from the virtual dentition and converts it into a signal
  • signal-to-light conversion means that converts a light-receiving signal from the light-receiving means into light
  • conversion light from the signal-to-light conversion means A position measuring means for calculating a distance between the virtual dentition and the light receiving means from the feature information and generating a distance signal;
  • a processing block made of a material that is formed in advance and made of the dental prosthesis
  • Block processing means for forming the dental prosthesis by processing the processing block based on the coordinate information
  • a dental prosthesis measuring and processing system comprising:
  • the virtual dentition is preferably a dental model including a missing portion and adjacent teeth arranged so as to sandwich the missing portion.
  • the irradiation light forming the reflected light has a higher scanning density at the margin line, the maximum ridge and the occlusal surface portion than the virtual dentition.
  • the converted light is preferably interference fringe light based on a digital holography method or a conoscopic holography method.
  • an abutment may further exist in the missing portion of the virtual dentition.
  • the abutment may be an implant abutment or an abutment derived from natural teeth.
  • these abutments may be tilted at any angle due to fabrication and other causes.
  • the third aspect of the present invention is a dental prosthesis measurement process for measuring the shape of a virtual dentition having a missing part in a third manner in a non-contact manner and processing a dental prosthesis based on the measurement result.
  • the system includes the following means: a virtual dentition having a shape of a missing part in which an abutment is planted and a neighboring tooth adjacent to the missing part,
  • a fitting means having a recess having a shape and a dimension into which the abutment of the virtual dentition can be inserted;
  • a vertical indicating member which is provided with the fitting means and has a vertical relationship with respect to a reference plane of the fitting means set by a measurement unit;
  • Angle adjusting means for changing the angle of the abutment by adjusting the x, y, and z directions of the mounting surface with the virtual dentition mounting surface of the support stage as a reference surface,
  • the fulcrum is adjusted from the angle adjusted by the angle adjusting means when the abutment is aligned with and fitted to the recess.
  • Angle adjustment means for detecting the planting angle of the table,
  • a processing block that is formed in advance and is made of a material for producing the dental prosthesis
  • FIG. 1 is a perspective view showing an embodiment of a dental prosthesis measurement processing system according to the present invention.
  • FIG. 2 is a perspective view showing the main part of the dental prosthesis measuring and processing system shown in FIG. 1 from another direction.
  • Fig. 3 is a schematic diagram showing the rotational movement of the fixed part in the dental prosthesis measurement processing system shown in Fig. 1.
  • FIG. 8 is a perspective view showing an embodiment in which a model photographing force mesa is attached to the dental prosthesis measuring and processing system according to the present invention
  • 9A and 9B are a side view and a top view, respectively, of an implant model transcribed from a photograph taken using the camera of FIG.
  • FIG. 11 is a perspective view showing an example of a processing block used for carrying out the present invention.
  • Fig. 1 2 A and Fig. 1 2 B are schematic views showing the state before and after connecting the processing block and the rib, respectively.
  • Fig. 14 A and Fig. 14 B are schematic diagrams showing a method for determining the occlusal surface in the machining block and a method for grinding the occlusal surface of the machining block based on the results, respectively.
  • FIG. 15 is a perspective view showing another embodiment of the dental prosthesis measurement processing system according to the present invention.
  • Fig. 16 is a flowchart of the measurement processing process performed using the dental prosthesis measurement processing system shown in Fig. 15.
  • Fig. 17A and Fig. 17B are schematic diagrams showing the shape of the virtual dentition and the shape of the opposed occlusal surface of the opposed teeth obtained from the dental model data, respectively.
  • Fig. 18A and Fig. 18B show the state when the virtual dentition of Fig. 17A is rotated and observed from the side, and the virtual dentition of Fig. 17A and the opposite occlusal surface of Fig. 17B. It is a schematic diagram showing the superimposed virtual occlusion state.
  • Fig. 19A and Fig. 19B are the transcriptions of the state displayed on the monitor screen connected to the computer. It is a schematic diagram showing a virtual prosthetic model obtained by fitting the occlusal surface data to the tooth defect part data of the virtual dentition and applying the virtual occlusion state and approximate processing block to the tooth defect part.
  • Fig. 2 OA to Fig. 20 D are shown in Fig. 2 1 A, the virtual prosthesis data shown in the cross-section of line A-A 'and in Fig. 2 1B, the cross-section of line A-A'
  • This is a combination of the occlusal surfaces of the opposing teeth.
  • the virtual prosthesis and the occlusal surface are opposed to each other, the occlusal surface is arranged on the virtual prosthesis, and the pendulum type rotational movement is performed on the occlusal surface.
  • FIG. 6 is a schematic diagram showing a state in which cross data is expressed by movement of the occlusal surface and a state in which another cross data is generated by movement of the occlusal surface;
  • Figure 22 is a schematic drawing of a model of a virtual prosthesis displayed on a monitor screen connected to a computer
  • FIG. 23 is a schematic diagram showing a state in which the virtual prosthesis model shown in FIG. 22 is virtually mounted on the tooth defect portion.
  • the present invention relates to a means for detecting the planting angle of the planted implant, a coupling unit for coupling the block and the rib based on the connection angle between the machining block and the rib based on the planting angle, and coupled machining
  • the block for machining consists of machining means based on CAD / CAM data. Even if the implanted implant is inclined, the upper part of the implant is closely coupled with the prosthesis that can form a natural dentition. It can be obtained from outside information.
  • the present invention prepares a block having only various types of occlusal surfaces in advance, and performs statistical processing on the occlusal surface of the adjacent tooth and the general occlusion form data of the prosthetic region from the block, thereby preparing the existing block Select. If the occlusal surface is provided in advance, the portion becomes a flat surface, so that a normal grinding process can be performed by detecting a tilt angle and forming a block having a connection based on the tilt angle.
  • a block having only an occlusal surface is a state in which an occlusal surface shape is formed on one surface of a cube, but in addition, even if an occlusal surface is formed on one of the plane portions of a cylindrical body. Good.
  • a commonly used impression is obtained by using an implant planting part, an adjacent tooth part, and an implant planting as a prosthetic part. The steps taken for the opposing teeth and adjacent teeth of the standing part;
  • a step for obtaining the angle of inclination of the implant a step of determining a connection angle between the spherical connecting portion integrally connected to the processing portion and the rib according to the angle of inclination of the implant,
  • the tilted implant tip can be inserted into an adapter having a standardized recess, and the entire model including the implant can be adjusted by rotating, sliding, etc. And, as an example, it has a configuration in which the inclination of the model at the time of fitting with the recess is expressed by two angles as the inclination of the implant. But at least if you move the model with the other reference with the implant tip to align with the standardized state and measure the angle of the model's reference relative to the horizontal in the combined state There is also.
  • the adjusting means is not particularly limited as long as it has a structure that holds the bottom part serving as the reference part of the implant model and can adjust and measure the angle three-dimensionally.
  • the adjusting means is not limited as long as the inclination of the flat plate at the reference bottom of the implant model can be measured three-dimensionally, and only the implant model is moved, and after the movement, a three-dimensional stereo camera, etc. It is also possible to measure the angle between the reference plane of the implant model and the horizontal plane using a non-contact distance measurement and scale.
  • the present invention provides a distal end portion of an implant by providing a spherical coupling portion between a so-called semi-finished product (block) made of a processing member and a connection terminal (rib) connected to the processing machine.
  • the hole with high perpendicularity to be mounted can be machined, and it is easy to machine into a shape that forms a natural dentition for a tilted implant.
  • the shape of the processing block is an example of the shape shown in Fig. 11.
  • the spherical connecting portion is formed integrally with the processing member, as long as the connection with the rib is good. There is nothing.
  • the size of the connecting portion is preferably smaller than the size of the additional portion, but when the angle is large, a spherical connecting portion larger than the processed portion may be used. Since the connecting portion is a part that is finally cut off, the connecting part may be any member that can be easily cut by a cutting tool such as an end mill and has good contact with the processing member.
  • the present invention prepares a block having a pre-formed occlusal surface and a processing portion having a plurality of different occlusal surfaces, which is converted into a database, registered in a computer, and input to the missing portion information. Based on the above, a means for selecting is provided.
  • Database information includes, for example, block shape information, occlusal surface shape information, block dimension information, color information, allowable maximum ridge height distance, general application site information, and table processing with serial numbers. It is what has been done.
  • shape information is displayed and output on a monitor of a computer such as a personal computer, an easy-to-understand photograph, CG screen, etc. are shown as an example, and various information may be recorded accompanying this.
  • candidate block images are displayed and visually or statistically displayed. It may be determined probabilistically.
  • the step of obtaining the shape of the occlusal surface of the opposing tooth by impression the step of measuring the surface shape of the occlusal surface, the pre-formed occlusal surface information selected, or superimposed or adjacent to each other, Step for obtaining processing data on the block surface for the shape of the opposing teeth, and forming a correction processing data that corrects the position of the processing tool according to the inclination angle of the implant.
  • it comprises a step. After the processing, it is possible to obtain an implant prosthesis having an occlusal surface processed in accordance with natural occlusal surface information on a pre-formed occlusal surface unevenness on the surface.
  • the present invention calculates a distance between the dental model and the light receiving unit from the light receiving unit that receives the reflected light from the dental model and the converted light obtained by converting the light reception signal obtained by the light receiving unit into feature information.
  • Position measuring means coordinate forming means for forming the shape coordinates of the dental model from the distance signal obtained from the position measuring means, and processing for processing the prosthesis forming processing block based on the obtained coordinate information
  • the position information can be obtained even in parts where the optical reflection light is strong, such as a metal surface, and the converted light is transmitted by passing a combination of a uniaxial crystal and a deflector plate such as conoscopic holography.
  • Irradiation light is radiated in the form of dots on the surface of the object.
  • the coordinate data of the part of the object can be obtained by a method of scanning in parallel.
  • the irradiation light may be light that irradiates the measurement region and reaches the light reception region, but preferably the irradiation light and the light of the light receiving unit.
  • the scanning method is not limited to zigzag parallel scanning, and radiation scanning measurement, etc. may be performed in consideration of the margin line.
  • the conoscopic method can measure the position of a tilted part even with a tilted implant abutment or a natural abutment with a complicated shape. Measurement is possible, which is preferable in the present invention.
  • the adjusting means in the present invention is a means for adjusting the machining area, for example, means for adjusting the inclination of the implant abutment, and for producing a denture fitted to the inclined abutment. Therefore, the present invention makes this possible by adjusting numerical data, and does not require other jigs, and can be easily formed in a short time. It is possible.
  • a microprosthesis such as an inlay can include measuring a dimple in a defective state including its periphery and obtaining prosthesis data for processing from the dimple and surface data after the prosthesis.
  • the processing data forming means in the present invention virtually forms a dental model based on the three-dimensional data obtained by the coordinate forming means, and data for manufacturing a prosthesis from the resulting shape data It is exemplified to extract and use.
  • the present invention in order to obtain a desired dental prosthesis by arithmetic adjustment, it is possible to accurately measure the indentation, the shape of a vertical surface or an inclined portion from a dental model for a dental prosthesis while performing non-contact measurement. This has the effect of enabling rapid processing data.
  • the shape coordinate data obtained from the measurement unit is changed to a desired shape for machining, and the block is ground by a three-dimensional machine.
  • the present invention makes it easy to grasp the margin line shape within a range where the irradiated light can be received, and is suitable for manufacturing a dental prosthesis. .
  • the reflected light Since it is sufficient that the reflected light can be received at least, it is possible to measure the concave surface within the range in which the reflected light can be received, thereby measuring the cavity of the inlay. Moreover, since the reflected light is too strong, the reflected light is once converted into concentric interference fringes even in a state where it cannot be visually identified, so that a margin line can be obtained accurately.
  • the abutment in the tooth defect portion is measured to obtain the concave shape, and from the tooth part, the remaining cusp form, etc. It is possible to select occluded part data that is optimal for the missing part and transform it on the data as necessary to generate occlusal surface form data.
  • the occlusal surface form data after the prosthesis may be obtained by setting wax or the like in the defect part. By combining the occlusal surface form data and the missing part data, a virtual inlay shape is obtained and processed by the processing block.
  • the margin line on the abutment can be obtained directly from the model surface without taking the effort of gingival retraction.
  • the scanning of the irradiation light is also effective for obtaining a joint (margin line) with the abutment tooth with a substantially spherical surface by using a radial scanning method, which is more information than zigzag scanning. May be easy to obtain.
  • the present invention provides a tooth missing part data having a shape of a missing part and its adjacent teeth, a three-dimensional shape input means for obtaining opposed occlusal surface data indicating an opposed occlusal surface,
  • Virtual prosthesis preparation means for creating a virtual prosthesis shape from the three-dimensional defect shape data obtained by the three-dimensional shape input means
  • a dental prosthesis measuring and processing system comprising:
  • the opposing tooth surface data and the tooth defect shape data are formed by moving the mouse, joystick, etc., to approximate the jaw movement. It is possible to obtain a more accurate prosthesis by detecting the crossing portion and deleting it.
  • the two data of the tooth defect data and the occlusal surface data obtained from the impression model or the like are displayed in a three-dimensional manner on a computer monitor.
  • the pendulum-like movement of the counter tooth surface means when moving in a self-propelled manner, or by manipulating the man-machine interface and manually moving the counter tooth surface on the screen. The same goes for other exercises.
  • the opposite tooth surface data may be in a state of being higher than the tooth defect data. This stopped point is in a state of stagnation, and the opposing tooth surface is always on the upper side than this state. And since the range is an uneven tooth surface, it is chewable with an acceptable range (for example, the x-axis and y-coordinate values are less than 10% with the Z value and the opposite tooth surface data below the tooth defect data). It is good also as a state.
  • the three-dimensional shape measurement in the present invention includes two methods, for example, as described above, a technique based on photography and non-contact measurement performed by irradiating a specific scanning beam such as a laser beam.
  • the method of detecting and correcting the crossing data by pendulum movement of the opposing tooth surface with the height 30 to 60 mm shown in Fig. 20 C as the center point o (1 2 3) is close to jaw movement It is suitable because it is an exercise and is performed by a simple method.
  • the angle indicated by reference numeral 1 2 2 in FIG. 20 C is, for example, an angle of ⁇ 3 ° to soil 10 °, preferably ⁇ 5 °.
  • the pendulum movement angle is preferable for simulating jaw movements for occlusion, but because of the need to consider individual differences, the pendulum movement angle is ⁇ 3 ° ⁇ 10 °. It may be possible to simulate the jaw movement based on it.
  • an accurate prosthetic occlusal surface can be easily formed by correcting the crossing data using the user interface for performing jaw movement.
  • FIG. 1 and 2 show the dental prosthesis measuring and processing system of the present invention as viewed from the front and rear.
  • Figure 1 shows the state seen from the SH direction
  • Figure 2 shows the state seen from the SF direction.
  • the x, y, and z coordinates in the figure will be described in a state where they are arbitrarily set based on the direction of the adjusting means 1 0 0.
  • the arrow direction is, for example, the positive direction.
  • the direction of the adjusting means 100 is indicated by SH and SF. Since the adjusting means 100 is coupled to the base plate 10 by magnetic force, it can be slidably moved with some force on the base plate 10.
  • the adjusting means 100 is an instrument for performing rotational movement of the implant model placed on the fixed part 2 1.
  • FIG. 2 shows only the adjusting means 100.
  • the base plate 10 forms a horizontal plane.
  • the axial column 1 1 is installed perpendicular to the horizontal plane.
  • the centering rod 12 can be rotated within a range of 90 degrees about the main shaft 1 3.
  • the centering hole 14 is a vertical through hole, and has a diameter enough to insert the support rod 2 2 provided with the adapter 2 3 as shown in FIG.
  • the adjustment / 3 display stage 1 5 has a scale attached to rotate the fixed part 2 1 around the center P 1 to obtain; 6 angle information at the time of external photography. .
  • the bottom 1 5 a of the shooting / 3 display stage 1 5 has magnetism, Magnetically coupled to the metal base plate 10. Therefore, the shooting adjustment j6 display stage 15 can be moved on the base plate 10, and as a whole, the fixed portion 21 is manually moved in parallel.
  • FIG. 4 is a diagram showing a part of the adjusting means 10 0 viewed from the direction SF shown in FIG. 1, and shows a state where the adjusting means 100 has moved on the base plate 10.
  • the state represented by the dotted line and the solid line shows before and after movement.
  • the adjusting means 100 is movable in a two-dimensional direction on the base plate 10.
  • the iS angle adjustment unit 16 adopts the micro-meteor format and can be rotated to measure the angle / 3 centered on P 1 from the attached scale.
  • the S angle adjustment unit 17 adopts a micro-meteor format, and when it is turned, the angle can be measured from the attached scale.
  • the 0 display stage 18 can display the rotation angle ⁇ from the horizontal state when it is rotated about the center P 2.
  • the ⁇ angle adjusting unit 19 can take a micro-meteor format and rotate it so that it can be read from a scale with a rotation angle when the fixed unit 21 rotates around the center P 1.
  • the first horizontal support portion 1 8 1 and the first vertical support portion 1 8 2 are connected in an L shape, and the first horizontal support portion 1 8 1 is centered by rotation of the / 3 angle adjustment portion.
  • the difference between the angle ⁇ and the angle jS is that the angle a indicates the rotation angle of only the fixed portion 2 1, while the angle; 6 indicates the rotation angle of the entire adjusting means 100.
  • the second vertical support portion 1 83 in FIG. 2 and the second horizontal support portion 1 84 in FIG. 1 are connected and coupled to each other in a vertical state.
  • the second vertical support portion 1 8 3 can rotate around the center P 2 shown in FIG. 4, and the second horizontal support portion 1 8 4 also rotates by the rotation of the second vertical support portion 1 8 3.
  • Reference numeral 1 8 4 a in FIG. 2 indicates a state in which the second horizontal support portion is inclined leftward as the second vertical support portion 1 83 rotates.
  • reference numbers 2 1 a and 2 1 b indicate two trajectories in a state where the fixed portion 2 1 is rotated.
  • Reference numeral 2 1 c indicates the direction in which the fixed portion 21 moves around the center P 2, and indicates the rotation angle.
  • the support bar 22 is cylindrical and can be moved up and down, and is formed so that the state can be fixed in the middle as needed.
  • the adapter 23 is provided with a concave portion 24 formed on the bottom surface thereof, which is an implant tip portion in the upward direction and has a shape of a denture attachment site.
  • FIG. 1 and FIG. 2 will be described in detail with reference to FIG. 5, FIG. 6, and FIG.
  • FIGS. 5 to 7 are described by omitting the bottom direction from the second horizontal support portion 1 84.
  • m is a dental model, that is, a model.
  • the implant part m 2 is set up, it is shaped into a part including the adjacent teeth ml and m 3.
  • a hardening material such as plaster is poured into this, and after hardening, the disc-shaped connecting plate ms is connected to the taken out model.
  • the connection plate m s is formed in a planar shape and has a configuration that can be coupled to the fixed portion 2 1.
  • 9A and 9B are schematic diagrams drawn from a photograph of the model m taken, as will be described below.
  • the shooting adjustment jS display stage 15 is manually moved, Move the base plate 10 as shown in Fig. 4 and adjust it so that the implant m 2 and the recess 2 4 are aligned as shown in Fig. 7, and lower the support bar 2 2 downward to Fit the recess 2 4 in 3 and the in-plan collar m 2.
  • This may be a rotational movement configuration with a mouth pot arm, or each part may be driven by a servo control, or manual operation may be eliminated and full automation may be performed.
  • Fig. 8 shows that the centering rod 12 in Fig. 1 is open at one end, because the camera mounting part 7 1 force main shaft 13 is shared, so that it reinforces the shaft 11 1
  • a shaft column 1 1 1 is provided at the site, and a main shaft 1 3 1 is added.
  • “Specification” is recorded in conjunction with tongue width (interdental HA 1) and near centrifugal width (tooth thickness HA 2), as well as color tone, arrangement position, and identification data. .
  • margin line position HA 3 and HA 4 are obtained in the root portion of the implant.
  • a resin and silica filler hybrid or a pre-fabricated block made of ceramics such as feldspar and hydroxypatite, is used. Prepare the ribs and prepare for installation.
  • the ready-made processing block 1 1 b is a schematic diagram, and the occlusal surface is omitted.
  • the connecting portion 1 1 c is integrally formed of the same material as the processing block 1 1 b
  • Rib 1 1 a is formed of a metal material such as aluminum
  • the connection surface a with the connecting portion 1 1 c 1 is a recess, preferably a spherical recess, and the other end a 2 has a shape that can be attached to the attachment of the processing apparatus.
  • Figure 12 shows an example of the connection between the rib and the processing block.
  • the adjustment block 1 2 3 between the machining block 1 2 1 and the spherical connection 1 2 2 is the same as the machining block 1 2 1 so that the machining drill does not contact the rib 1 2 4. It is manufactured in one piece with the material.
  • the part of the rib 1 2 4 connected to the spherical connecting part 1 2 2 is a partial cross-sectional view.
  • Figure 1 2 A shows the rib 1 2 4 and the machining block 1 2 1 Next, in Fig. 1 2 B, it is bonded with an adhesive at a three-dimensional angle corresponding to the angle (, ⁇ ) obtained earlier. Indication that the angle (, ⁇ ) is, for example, centered on the z axis and moved by ⁇ on the yz or X z plane, then moved by ⁇ on the X y plane, the actual angle is obtained Indicates.
  • XA indicates the long axis of the machining block
  • XB indicates the rib 1 2 4 Indicates the major axis.
  • reference numeral 1 3 0 is a space schematically showing the machining space of the grinding machine, and the rib attachment portion 1 3 a is a fixing hole (in which the rib 1 2 4 is inserted and fixed) (Not shown) is formed.
  • the maximum bulge site HAL is obtained by generating a smooth approximate curve from the site where the tongue width (interdental HA 1) and the near distal width (tooth thickness HA 2) schematically shown in Fig. 9 are measured.
  • the value is obtained from the force information of the implant using the shape of the implant part. Further, from the photograph of the schematic diagram shown in FIG. 9, the margin line Hm is obtained from the distances HA 3 and HA 4, Implant insertion depth 1 3 2 is formed.
  • Fig. 13 shows a state where ribs 1 2 4 are actually inserted and fixed.
  • the end mill 1 3 b is made of drill teeth, and the diameter is appropriately selected according to the complexity of what is to be processed. In this state, the end mill 13 b moves while rotating in the x, y, and z directions, and performs grinding while contacting the surface of the processing block 12 21.
  • Fig. 1 3 A shows the state of grinding based on the curve complementation data from the line (HA L) indicating the maximum ridge to the margin line Hm
  • Fig. 1 3 B shows the implant insertion site design. Based on 1 3 2, the state where the end mill 1 3 b moves and is ground is explained using a partial sectional view.
  • the plant plant insertion site data 1 3 2 is determined, for example, according to the distance between HA 3 and HA 4 in the schematic diagram of FIG.
  • the processing block 1 2 1 at this time is connected to the rib 1 2 4 at an angle, so that the implant insertion site is the end mill 1 3 Grinding is possible by b (a state close to vertical), and the grinding data is ground and processed as it is in the shape of the in-plan tip shape data selected from the catalog.
  • Fig. 1 4 A shows an impression of the part of the opposing tooth facing the denture in advance, forms a model and measures its occlusal surface shape, and measures the opposing tooth shape data 1 4 1 a and the occlusal surface data 1 4 1 Shows how to get
  • This grinding data 1 4 3 is further supplemented with an inclination angle (H, ⁇ ) as shown in Fig. 1 4 B to obtain complementary grinding data 1 4 4, and an end mill 1 3
  • H, ⁇ inclination angle
  • the dental model is an indirect dental model showing a defect shape for obtaining a denture attached to the in-plan ⁇ .
  • the light irradiator 10 outputs a light beam having a straight line such as laser light, visible light, infrared light, infrared laser light, etc.
  • the light irradiator 10 is indicated by an arrow 10 a.
  • Such scanning drive is performed.
  • the scanning drive method may use a normal zigzag scanning (5 Z shown in FIG. 9B) or a radiation scanning.
  • the movable reflecting mirror 10 1 irradiates the light from the fixed light irradiation unit 10 while moving on the dental model 13.
  • the light receiving unit 1 1 includes a uniaxial crystal 1 1 b and a CCD camera 1 1 d sandwiched by polarizing plates 1 1 a and 1 1, and a polarizing plate. Interference fringes that have passed through the crystals sandwiched by The conversion light is received by the CCD camera 1 1 d and converted into electrical signals.
  • the light irradiating unit 10 and the light receiving unit 11 1 may have a common optical axis as a coaxial configuration in addition to the configuration as shown in FIG.
  • the reflecting mirror 12 is preferably arranged around the object to be measured, and by receiving the reflected light at the light receiving unit 11 1, an accurate shape can be measured by a statistical method such as addition averaging. .
  • the dental model 1 3 is made by an existing method, and an in-plant splint abutment 14 is formed in the center, and adjacent tooth models 1 3 a and 1 3 b are formed on both sides.
  • the implant abutment 14 is, for example, a shape model of a portion that protrudes from the gingiva after a one-piece type artificial tooth root is planted, and that is a portion to which a denture is attached.
  • the signal processing device 15 is composed of a monitor, a hard disk, a movable storage unit, a storage device, a computer such as an Ethernet (registered trademark) LAN, and the like. It is equipped with a configuration that allows the use of the approximate processing block database, 3D image processing functions, and so on.
  • the processing machine 16 is a so-called NC processing machine or a three-dimensional processing machine, which mainly rotates a mill 7 2 2 fixed in the z-axis direction and moves it in the x, y, and z directions to move its tip and Around the periphery, a processing block (not shown) is ground and cut to obtain a prosthesis.
  • a so-called rapid proto type processing machine is preferably used.
  • the measurement stage 17 may be fixed, but is preferably in a state where it can be rotated and slid in order to measure the shaded portion.
  • a scanning configuration in which the measurement stage 17 is moved by a predetermined width in the y direction and the movable reflecting mirror 101 or the light irradiation unit 10 is swung in the X direction may be employed.
  • the measuring device shown in Fig. 15 is the technology described in Japanese Patent Laid-Open No. 2 0 2 — 5 0 4 7 1 6, and the product is a product manufactured by Optical Metrology Co., Ltd. But it is feasible.
  • a model of the implant planting part and the adjacent tooth and a dental model (byte) of the opposing tooth surface (occlusion surface) facing this part are prepared in advance by a known technique.
  • the dental model is preferably formed by a known method and has a more actual shape.
  • the dental model 1 3 is fixed to the measurement stage 1 7, the laser beam from the light irradiation unit 10 is irradiated in a scanning manner, and the reflected light is directly received by the light receiving unit 1 1 or through the reflection mirror 1 2. To reflect and receive light.
  • the method of irradiating the laser beam in a scanning manner is also a method of irradiating a dental model from a fixed light source through the working reflector using a working reflector.
  • a dental model is also a method of irradiating a dental model from a fixed light source through the working reflector using a working reflector.
  • the movable reflector 1 0 1 in FIG. 1 the irradiated light from the light output unit 1 0 1 0 1 a
  • the dental model may be irradiated with the reflected light 1 0 1 b reflecting the light.
  • the reflected return light may return to the light receiving unit 11 through the same optical path again, or may be directly received by the light receiving unit 11 as it is.
  • the received reflected light passes through the uniaxial crystal unit sandwiched between the polarizing plates in the light receiving unit 11. Then, it is converted into interference fringe-shaped converted light, and this converted light is photographed by a CCD camera or the like 11 d, converted into two-dimensional image data, and transmitted to the signal processing device 15.
  • the signal processing device 15 obtains the distance information 10 L from the interference fringe-shaped converted light based on the above-described calculation and temporarily stores it.
  • the light irradiator 10 swings in the 1 0a direction and scans the output light.
  • the reflected light path 10 d the reflected light path is 10 e
  • the reflected light path is 10 g with respect to the irradiation light path 10 f.
  • the converted light information is processed and stored in the signal processing device 15 from the reflected light for each scanning progress.
  • the scanning is performed by displacing the irradiation light in the x and y directions so as to cover the entire dental model 13, and sequentially calculated from the distance information (position information) force conversion light between the reflection part and the light receiving unit 1 1, Recorded in processor 1 5.
  • processor 1 Connect the distance information with straight line interpolation and curve interpolation to create a 3D shape display, and if necessary, display a virtual dental model on the monitor of the signal processor 15 and check whether it matches the actual one. It is also possible to do this.
  • the shape data of the peripheral part when the implant abutment is adjusted to the vertical state and the adjacent tooth Get the data in between.
  • Fig. 17A is a virtual shape obtained from dental model data
  • Fig. 17B is the shape of the opposing occlusal occlusal surface (bytes)
  • Fig. 18A is a rotation of Fig. 17A, from the side Figure 18B shows the virtual occlusion state where the dental model and the byte are superimposed.
  • a byte (opposite tooth shape) is fixed to the measurement stage 17, the laser beam from the light irradiation unit 10 is irradiated in a scanning manner, and the reflected light is directly received by the light receiving unit 11 or the reflection mirror 1. The light is reflected through 2 and received.
  • the received reflected light passes through a uniaxial crystal unit sandwiched by polarizing plates in the light receiving section, is converted into interference fringe-shaped converted light, and is converted into a two-dimensional image, which is converted into a signal processing device. 1 Transmit to 5.
  • the signal processing device 15 obtains distance information 10 L from the interference fringe-shaped converted light, and temporarily stores it.
  • Scanning irradiation is performed by displacing the irradiation light in the X and y directions so as to cover the entire byte.
  • the distance information between the reflection part and the light receiving unit 1 1 is sequentially calculated from the converted light, and the signal processing device 1 Recorded in 5. While the distance information is straightened and curved, the 3D shape is converted to a virtual one on the monitor of the signal processing unit 15 as necessary ( Figure 17B shows the back side). ) Can be displayed to check if it matches the actual one.
  • the margin line data necessary for the prosthesis and the maximum ridge area are obtained from the angle-adjusted data.
  • the maximum ridges and margin lines of the denture shape to be actually obtained from this night are virtually formed, and the occlusal surface shape is determined from the overlay on the data with the previous byte data (Fig. 18 B).
  • the denture height data is obtained (step 2 0 4 in FIG. 16).
  • the implant shape data used this time is read from the data base, and the mounting hole inner surface data viewed from the bottom surface of the prosthesis is formed (step 2 0 5 in FIG. 16).
  • Step 2 0 6 in Figure 16 Formation of bottom surface shape data (Step 2 0 6 in Figure 16) — The above-described bottom shape data of the tooth neck and the inner surface data are synthesized to form the bottom surface shape data (step 2 06 in FIG. 16).
  • the upper cervical data and the bottom shape data are combined to form virtual prosthesis (crown) shape data for the tilted implant abutment (step 20 in FIG. 16).
  • a block that approximates this shape is searched.
  • the search is performed by obtaining the values used to determine the block from the virtual data shown in Fig. 9A and Fig. 9B, and the nearest one is searched from the list of data shown in Fig. 10.
  • Fig. 9A and Fig. 9B show the input values for search by setting the sample points corresponding to the positions shown in Fig. 9A and Fig. 9B from the force that is two-dimensional data and the three-dimensional data.
  • FIG. 9A is a two-dimensional view of the virtual model of the dental model, where m is the gingival part, m 3 is the stage attachment part, ms is the implant abutment part, and m 1 and m 3 Figure 9A shows the distance HA 3 between the adjacent tooth ml and the implant abutment m 2, and the distance 11 8 1 between the adjacent tooth ml, 1113.
  • Fig. 9B shows the dental model as viewed from the top, and the tooth width HA 2 along the dentition, the implant abutment m 2 and the distance HA 4 from the contour when measuring the tooth width are obtained.
  • the measurement positions in Fig. 9A and Fig. 9B are only examples. However, it is possible to obtain more accurate values by measuring and averaging the distances of the same part in different settings. Also good.
  • Figure 10 is an example of a database registration format, which is a processing data row, and a shape browsing window (in order to make a visual decision on a document or on the monitor of the signal processing device 15 in FIG. 1).
  • 1 2 1 is a block machining part
  • 1 2 2 is a spherical rib joint.
  • the coupling surface between the rib 1 2 4 and the spherical rib coupling portion 1 2 2 is preferably provided with a shape along the spherical surface of the rib coupling portion, but is not limited to this, and at least the contact and joining with the spherical surface are possible. Any shape can be used.
  • Fig. 1 2 ⁇ and Fig. 1 2 ⁇ show the machining blocks obtained in Fig. 1 3 ⁇ and Fig. 1 1 3 B, Fig. 1 4 A and Fig. 1 4 B Horizontally mounted and vertically extended mill 1 3 b in that state, with a processing machine as shown in Fig. 15, X, y
  • the rib mounting portion 1 3 a that grinds the machining block 1 2 1 by moving in the z-axis direction is preferably configured to be fitted and fixed to the rib 1 2 4 in one direction.
  • Mill (rotary drill for machining) 1 3 b The shape of b may be automatically replaceable.
  • Fig. 1 3 A shows the state of grinding based on the curve complementation data from the line (HAL) indicating the largest ridge to the margin line H m
  • Fig. 1 3 B shows the implant plant insertion site data 1 3 2
  • HAL curve complementation data from the line
  • Fig. 1 3 B shows the implant plant insertion site data 1 3 2
  • the implant insertion site 1 2 3 can be ground by the mill 1 3 b (close to vertical) ).
  • FIG. 14A shows a state in which the occlusal surface 1 43 of the upper denture is determined in the occlusal state as shown in FIG. 18B.
  • Reference number 1 4 1 a shows the image of the opposite tooth, and 1 4 1 captures the surface shape of the opposite tooth as an image, which is the byte surface shown in FIG. 17B.
  • 1 4 5 shows the pre-made occlusal surface of the pre-made approximate block, and mill 1 3 b shows that the pre-made occlusal surface 1 4 5 is based on the shape obtained by the byte surface 1 4 1 in Fig. 16 above. Grinding is performed so that the occlusal surface 1 4 2 formed by the process is obtained.
  • FIG. 14B A schematic diagram of the grinding process is shown in Fig. 14B. Finally, the connecting part 1 2 3 is scraped off to complete the denture.
  • the present Example showed the example of the processing apparatus by a vertical drill, if it does not restrict to this,
  • a multi-axis processing machine such as a 5-axis
  • abutment (implant) data will be corrected vertically. It is also possible to generate and process machining data.
  • a so-called rapid prototyping processing machine described in Japanese Patent Laid-Open No. 2-468688 can be used.
  • FIG. 15 Another embodiment will be described in detail with reference to FIG. 15 again. Note that the configuration in FIG. 15 has been described in detail earlier, and thus a redundant description thereof is omitted here.
  • the sheet-like impression for the byte is conceived to obtain a byte having an uneven shape of occlusion.
  • the opposing tooth surface data may be obtained using only the bytes.
  • the purpose of the byte is to obtain the position information of the occlusal teeth, but since the meshing state can also be obtained, it is possible to obtain the tooth surface of the prosthesis by obtaining the surface shape of the barb. Is possible.
  • the birch is formed for the purpose of obtaining a squeezed state, its thickness may be thin, or depending on the material and sampling method, the bicolor around the defect may not sufficiently reflect the opposing tooth shape. However, in this case or when it is desired to obtain a more precise occlusal surface, an opposing tooth model may be formed.
  • the counter tooth surface (opposite tooth shape) is fixed to the measurement stage 17, the laser beam from the light irradiation unit 10 is irradiated in a scanning manner, and the reflected light is received by the light receiving unit.
  • 1 Receive light directly from 1 or reflected through reflector 1 2.
  • the optical axis returns to the irradiation optical path 10 b via the reflection optical path 10 c, and the light axis is substantially coincident. May be.
  • a reciprocating optical path is shown so that the optical axes coincide with each other, the present invention is not limited to this, and a different optical path may be used.
  • Tooth neck shape formation (Step 2 0 4 in Fig. 16)
  • a prosthesis may be manufactured using the same procedure for an abutment tooth model obtained from a natural abutment tooth.
  • the opposing tooth flank data (preferably byte data) is displayed on the monitor.
  • the byte depot shows the position of the upper and lower teeth when itching, but the unevenness of the occlusal surface can also be taken, so even if the occlusal shape of the opposing tooth is not taken care of, Tode can fully adjust the occlusion overnight.
  • Virtually formed crown data and counter tooth surface data are virtually contacted. Display the jaw mobility menu while touching.
  • 1. Forward / backward movement menu Movement distance
  • 2. Side movement menu Movement angle, movement distance, sagittal condyle path angle, Bennett angle
  • 3. Working side movement menu, etc. can be selected. .
  • the movement of the mouse, joystick, and other interfaces moves along the menu, and movement in other directions is restricted.
  • the movement along this menu adjusts the shape of the occlusal surface, such as cutting away unnecessary parts.
  • the crossing portion may change its color, pattern, etc., and at that time, pressing a specific key on the keyboard may delete that portion.
  • the pendulum movement from 3 to 10 degrees, preferably around 5 degrees from left to right and back, with the center point being 30 to 60 mm vertically from the contact state May be allowed.
  • Fig. 9 to Fig. 21 show examples of adjustments during actual occlusal movements. This is a diagram showing the state displayed on the monitor screen connected to the computer.
  • Fig. 21A and Fig. 21D are examples of the state displayed on an actual computer, and show one direction. As a CG screen, it is displayed in three dimensions as a three-dimensional screen with color depending on the case.
  • Fig. 1 9 A shows the opposing tooth surface data (opposite occlusal surface) data 1 1 1 and tooth defect model data 1 1 The virtual state superimposed on the two missing points is shown on the monitor.
  • the tooth defect model data 1 1 2 is formed by taking an impression from the actual defect part, and the adjacent tooth data 1 1 3 and 1 1 4 are also formed.
  • Opposite tooth surface data 1 1 1 is the occlusal surface data facing each other, and has the shape of the part corresponding to the opposing tooth and the adjacent tooth of the part located in the actual defect part.
  • margin line data from 1 to 5 of the abutment tooth, maximum ridge data from between adjacent teeth 1 1 3 and adjacent teeth 1 1 4, missing tooth portion of opposing tooth surface 1 1 1 1 Obtain the occlusal surface data from a, respectively, and superimpose the opposing tooth surface data 1 1 1 and the tooth defect part model data 1 1 2.
  • the adjacent tooth 1 1 3 and the opposing tooth data 1 1 lb are overlapped, and the adjacent tooth 1 1 4 and the opposing tooth data 1 1 1 c are overlapped, and in this state, the height of the prosthesis is increased overnight.
  • the appropriate block is selected from the existing approximate block data that has been previously library- ed, each of which is a parameter.
  • the approximate block can be A virtual model with a virtual prosthesis fitted in the evening is formed.
  • FIG. 20 An operation for adjusting the occlusal surface data of the virtual prosthesis by moving the opposing tooth surface and the missing portion data with each other will be described in detail with reference to FIGS. 20 and 21.
  • FIG. 20 An operation for adjusting the occlusal surface data of the virtual prosthesis by moving the opposing tooth surface and the missing portion data with each other will be described in detail with reference to FIGS. 20 and 21.
  • FIG. 20 is a cross-sectional view of the dentition data shown in FIG. 21A and FIG. 21B cut along line A-A '.
  • FIG. 20 schematically shows the display above the monitor.
  • the tooth is moved so that the opposing tooth surface data 1 1 1 is placed on the virtual prosthesis 1 1 6.
  • the superposition of adjacent teeth is monitored and the degree of coincidence is high, and this is the starting point for occlusal adjustment.
  • adjacent tooth 1 on the opposite tooth surface is further treated as a state of swallowing the state where it does not cross with a certain width (ie, it crosses in the evening, but does not actually cross).
  • 1 1 b and 1 1 1 c are set not to go down.
  • the adjacent teeth 1 1 lb and 1 1 1 c on the opposite tooth surface are monitored continuously or periodically for their contours or predetermined positions, and if the amount of crossing data exceeds a certain level, The counter tooth surface is set so that it will not move any further.
  • the occlusal movement is performed on the opposing teeth.
  • the occlusal movement is performed by the movement of the lower jaw, but it is easier to move the pair with a simple structure than to move the complicated structure.
  • Fig. 20 C shows that the occlusal adjustment is preferably performed according to the jaw movement, so that the movement menu can be specified, and if one is specified, the interface of the mouse, joystick, etc. is used to specify the actual jaw Specify exercise menu.
  • 1. Menu of forward / backward movement: movement distance, 2. Side movement menu: movement angle, movement distance, sagittal condyle road angle, Bennett angle, 3. Work side movement menu, etc. are displayed.
  • the interface displays only the movement direction of the jaw according to this menu, and the icons on the screen can be displayed even if various interfaces are moved.
  • the movement of only the allowable range may be performed without following the movement of the interface. Examples of the movement include a rotational movement shown in FIG. 20C and a sliding movement shown in FIG. 20D.
  • FIG. 20 C forms a state in which the two angles (1 2 2) are moved in a pendulum manner at 15 ° and + 5 °, respectively, as the center point o (1 2 3). Due to this pendulum movement, there is a part where the prosthesis surface intersects with the surface. This part is automatically colored as deleted parts 1 1 7 e, 1 1 7 f, and the data is deleted by operating on the screen, and the coloring disappears.
  • Fig. 20 D moves in parallel from front to back and left and right from the state shown in Fig. 20 B By moving the data on the screen while coloring the 1 1 7 g and 1 1 7 b colors of the data on the opposing tooth surface and the data on the occlusal surface of the prosthesis. The part where the color has changed may be deleted with one click at the operator's will.
  • the actual jaw movement is the combined movement of the movement menu described above, but it is preferable to adjust the occlusion by setting the movement menu so that the same occlusal surface can be formed.
  • the opening and closing movements of the rotation and sliding equivalent to the actual jaw movement, the forward movement mainly consisting of sliding, and the lateral movement are realized by moving the interface, and the data crossing part is displayed in an identifying manner It can be deleted or automatically deleted.
  • Fig. 21 A shows a perspective view of the prosthesis shown in Fig. 19B incorporated in the defect data.
  • Fig. 21B shows the state where the opposing tooth surface data 1 1 1 is superimposed on the tooth defect model data 1 1 2.
  • Opposite tooth surface data 1 1 1 shows a state in which the back surface is visible, but the cross 1 11 7 a is indicated by the difference in color.
  • the counter tooth surface shown here is a byte face, but this is the shape data of the counter tooth model taken from the counter tooth, preferably the maximum height from the occlusal tooth surface. In some cases, it may be replaced with shape data up to the part.
  • Crossing overnight is the place where the top and bottom are actually touched and pulled, and this part of the program data for cutting is also adjusted by deleting this part. It is adjusted.
  • Cross data 1 1 7 b appears as opposed tooth surface 1 1 1 moves (Fig. 2 1 C), and this data is deleted.
  • cross data 1 1 7 c appears (FIG. 2 1 D), and this data is deleted. This operation is repeated to correct the surface shape data of the existing prosthesis. In this way, the shape is formed as an accurate prosthesis by performing the correction.
  • FIG. 22 An example of the actual prosthesis shape is shown in Fig. 22.
  • Figure 22 shows the model shape data corresponding to the approximate model selected from the measurement data such as the abutment tooth shape and the margin line data obtained from the bilateral surface. It is composed of processing data obtained by adjusting the occlusal surface data by assigning a byte shape to the data obtained by calculating the data, changing the jaw movement to the pendulum movement, and adjusting the occlusal surface data.
  • This is a virtual prosthetic model projected on the computer monitor screen.
  • reference numeral 10 1 is the occlusal surface
  • 1 0 2 is the maximum ridge
  • 1 0 3 is a margin line
  • 1 0 4 is an occlusal surface adjustment part by a pendulum movement that approximates a jaw movement with a byte applied.
  • the actual approximate block is cut according to the virtual shape based on this measurement data, but at the virtual stage, it can be confirmed on the monitor whether it matches the model of the abutment tooth or the adjacent tooth.
  • Figure 23 shows a hypothetical restoration of the prosthesis in the defect.
  • Figure 2 Fig. 3 shows a state in which the virtual prosthesis for machining 10 0 shown in Fig. 22 is attached to the abutment model.
  • This figure shows the results performed on a computer monitor and shows the actual state of the dentition after prosthesis.
  • reference numerals 1 0 5 and 1 0 6 are adjacent tooth virtual models.
  • 1 0 7 is a gingival virtual model.
  • 3D shape data that can be adjusted on the image data is obtained by a method that can obtain a surface shape within a range where light can be received even on an inclined surface while being non-contact measurement. Since the desired prosthesis can be obtained from the shape data, it can be used more effectively in the field of dental prosthesis production more quickly and accurately.

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Abstract

La présente invention concerne un système de mesure/d'usinage de greffe d'interposition dentaire comprenant un moyen d'élaboration de forme tridimensionnelle pour créer des données de forme sur une rangée de dents virtuelle incluant les formes d'une partie de perte d'une dent et sa dent adjacente et des données de forme sur les surfaces d'occlusion opposées des dents opposées situées en face de la rangée de dents virtuelle, un moyen de fabrication d'une greffe d'interposition virtuelle pour élaborer une forme de greffe d'interposition virtuelle à partir des données de forme sur la rangée de dents virtuelle et des données de forme sur les surfaces d'occlusion opposées, un moyen d'ajustement pour combiner virtuellement les données de forme sur une forme de greffe d'interposition, déjà prête pour la formation d'une greffe d'interposition similaire à la forme de greffe d'interposition virtuelle, avec les données de forme sur la forme de greffe d'interposition virtuelle et ajuster les données combinées, soumettre les données de forme sur la rangée de dents virtuelle et les données de forme sur les surfaces d'occlusion opposées au contact, à la mastication, et à un ajustement, soumettre les données de forme sur les surfaces d'occlusion opposées à un mouvement virtuel, soumettre les données de forme sur la rangée de dents virtuelle à un mouvement de mâchoire virtuel, ce qui permet ainsi d'afficher l'état du mouvement de mâchoire sur un moniteur, et déterminer la forme de greffe d'interposition la plus appropriée de la rangée de dents virtuelle, et un moyen d'usinage de bloc pour élaborer un bloc devant être usiné selon les données de forme de greffe d'interposition les plus appropriées en vue de fabriquer une greffe d'interposition dentaire.
PCT/JP2008/066909 2007-09-13 2008-09-12 Système de mesure/d'usinage de greffe d'interposition dentaire WO2009035142A1 (fr)

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JP2011110420A (ja) * 2009-11-24 2011-06-09 Sirona Dental Systems Gmbh 義歯アイテムを設計および製造するためのシステム、方法、装置、およびコンピュータ読み取り可能な記憶媒体
CN102106760A (zh) * 2010-11-24 2011-06-29 山东大学 可视量化模型观测仪
JP2012024567A (ja) * 2010-06-25 2012-02-09 Shofu Inc 義歯削合方法、歯科用削合前義歯の削合部算出用プログラム、及び咬合状態再現器
JP2013520251A (ja) * 2010-02-25 2013-06-06 ３シェイプ アー／エス 動的仮想咬合器
JP2013537076A (ja) * 2010-09-17 2013-09-30 バイオキャド メディカル インコーポレイテッド 歯科補綴物設計での咬合評価
JP2013240534A (ja) * 2012-05-22 2013-12-05 Wada Precision Dental Laboratories Co Ltd 歯冠設計方法、歯冠設計用プログラム、歯冠設計装置、歯冠作製方法、および歯冠作製装置
KR20140044158A (ko) * 2012-10-04 2014-04-14 주식회사바텍 치아 모형 x-선 촬영 시스템 및 이를 위한 지그 장치
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US11633265B2 (en) 2010-02-25 2023-04-25 3Shape A/S Dynamic virtual articulator for simulating occlusion of teeth
KR101785586B1 (ko) 2010-02-25 2017-10-16 쓰리세이프 에이/에스 동적 가상 교합기
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CN102106760A (zh) * 2010-11-24 2011-06-29 山东大学 可视量化模型观测仪
JP2013240534A (ja) * 2012-05-22 2013-12-05 Wada Precision Dental Laboratories Co Ltd 歯冠設計方法、歯冠設計用プログラム、歯冠設計装置、歯冠作製方法、および歯冠作製装置
KR20140044158A (ko) * 2012-10-04 2014-04-14 주식회사바텍 치아 모형 x-선 촬영 시스템 및 이를 위한 지그 장치
KR101927079B1 (ko) 2012-10-04 2018-12-10 주식회사바텍 X-선 촬영 시스템 및 이를 위한 지그 장치
JP2020191005A (ja) * 2019-05-23 2020-11-26 株式会社モリタ製作所 データ生成装置、スキャナシステム、データ生成方法、およびデータ生成用プログラム
JP2022070992A (ja) * 2019-05-23 2022-05-13 株式会社モリタ製作所 データ生成装置、スキャナシステム、データ生成方法、およびデータ生成用プログラム
JP7195466B2 (ja) 2019-05-23 2022-12-23 株式会社モリタ製作所 データ生成装置、スキャナシステム、データ生成方法、およびデータ生成用プログラム
JP7030076B2 (ja) 2019-05-23 2022-03-04 株式会社モリタ製作所 データ生成装置、スキャナシステム、データ生成方法、およびデータ生成用プログラム
JPWO2021149530A1 (fr) * 2020-01-21 2021-07-29
JP7390669B2 (ja) 2020-01-21 2023-12-04 Ａｒｉｔｈｍｅｒ株式会社 情報処理システム、情報処理方法、及びプログラム
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