WO2016062247A1 - Procédé de fabrication et dispositif de fabrication pour prothèses dentaires totales - Google Patents

Procédé de fabrication et dispositif de fabrication pour prothèses dentaires totales Download PDF

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Publication number
WO2016062247A1
WO2016062247A1 PCT/CN2015/092414 CN2015092414W WO2016062247A1 WO 2016062247 A1 WO2016062247 A1 WO 2016062247A1 CN 2015092414 W CN2015092414 W CN 2015092414W WO 2016062247 A1 WO2016062247 A1 WO 2016062247A1
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data
denture
dentition
edentulous
complete
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PCT/CN2015/092414
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English (en)
Chinese (zh)
Inventor
孙玉春
王勇
陈虎
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北京大学口腔医院
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Priority to CN201580040511.9A priority Critical patent/CN106794053A/zh
Publication of WO2016062247A1 publication Critical patent/WO2016062247A1/fr

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    • 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
    • A61C13/08—Artificial teeth; Making same

Definitions

  • the invention relates to the field of stomatology, in particular to a method and a device for manufacturing a complete denture.
  • CAD Computer Aided Design
  • CAM computer aided manufacturing
  • a method for manufacturing a full denture comprising: scanning a edentulous jaw model and a dental tray, obtaining an edentulous jaw model and a dental tray scan data; according to the edentulous jaw model and the occlusion tray Scan data registration and tooth extraction, obtain dentition data and upper and lower jaw base data; based on dentition data and upper and lower jaw base data, according to clinical colorimetric results, set the color layer in the occlusal plane normal, mark different The color layer forms a color separation denture data in the normal starting and ending plane of the occlusal plane as an interface for replacing different color materials.
  • the method further comprises: forming a full denture by using a numerical control processing device and a polymethyl methacrylate PMMA material of a corresponding color model according to the color separation denture data.
  • the numerically controlled processing device is a three-dimensional printer
  • the PMMA material comprises a base material and an artificial tooth material.
  • the starting and ending plane of the occlusal plane is parallel to the occlusal plane.
  • the dentition data and the upper and lower jaw base data are obtained according to the edentulous jaw model and the occlusion scan data registration and the tooth arrangement, including: registering the edentulous jaw model and the occlusion scan data to create the occlusal plane And the dental floss, based on the parameterized positioning of the full denture artificial tooth three-dimensional graphics database to arrange the upper and lower teeth, to obtain the dentition data; extract the upper and lower jaw proximal iliac line, and obtain the upper and lower jaw base data.
  • the dentition data and the upper and lower jaw base data are obtained according to the edentulous jaw model and the ivory scan data registration and the tooth arrangement, including: the gypsum model obtained by the scanning and the dental tray are registered, and imported.
  • the three-dimensional graphic database of the complete denture artificial teeth based on parametric positioning is used to find the upper and lower teeth.
  • the CAD of the dentition data is completed, and the CAD of the upper and lower jaw base data is completed after extracting the boundary line between the upper and lower jaws.
  • the full denture design and manufacturing method based on CAD/RP technology includes: establishing Three-dimensional graphic database of complete denture artificial teeth based on parametric positioning; based on 3D laser scanning technology with spatial positional relationship, data of upper and lower edentulous jaw and neutral area jaws with median relationship are collected; based on reverse engineering software design Complete denture artificial dentition for the theory of sexual and regional denture balanced jaw teeth; based on reverse engineering software design, the gums and bases conform to the theory and aesthetic principles of full denture neutral zone.
  • the parameterized positioning is to establish a logical relationship between each artificial tooth positioning coordinate system, the attitude coordinate system, the positioning marker point, and/or the fullness marker point according to the anatomical features of the artificial tooth and the complete denture toothing theory. The necessary mathematical description.
  • the upper and lower edentulous and neutral region jaw data with a median relationship are used to accurately restore the patient's personalized intermaxillary relationship.
  • the edentulous jaw model and the ivory scan data can be processed to obtain dentition data and upper and lower jaw base data, and the data is layered, and different color layers are set according to clinical colorimetric results. It is convenient to use the numerical control equipment to carry out the replacement of different color materials during the complete denture molding, thereby realizing the rapid production of multi-color full dentures and improving the efficiency and aesthetics of the complete denture production.
  • a device for making a full denture comprising: a scan data acquisition unit for scanning an edentulous jaw model and a dental tray, and acquiring an edentulous jaw model and a dental tray scan data;
  • the Ricketo data acquisition unit is configured to acquire dentition data and upper and lower jaw base data according to the edentulous model and occlusion scan data registration and tooth arrangement;
  • the color separation data acquisition unit is used for dentition data and
  • the color layer is set in the normal direction of the occlusal plane, and the different color layers are marked on the starting and ending plane of the occlusal plane to serve as an interface for replacing different color materials to generate color separation.
  • Denture data According to the clinical colorimetric data, the color layer is set in the normal direction of the occlusal plane, and the different color layers are marked on the starting and ending plane of the occlusal plane to serve as an interface for replacing different color materials to generate color separation.
  • the method further comprises: a numerical control processing device, configured to make a full denture according to the color separation denture data, the application and the corresponding color model of the PMMA material.
  • a numerical control processing device configured to make a full denture according to the color separation denture data, the application and the corresponding color model of the PMMA material.
  • the numerically controlled processing device is a three-dimensional printer
  • the PMMA material comprises a base material and an artificial tooth material.
  • the starting and ending plane of the occlusal plane is parallel to the occlusal plane.
  • the dentition data acquisition unit comprises: a dentition data acquisition sub-unit for registering the edentulous jaw model and the occlusion scan data, creating the occlusal plane and the dental floss, based on the parameters
  • the three-dimensional graphic database of the complete denture artificial teeth is arranged to arrange the upper and lower teeth to obtain the dentition data; the upper and lower jaw base data acquisition sub-units are used to extract the upper and lower jaw proximal iliac line and obtain the data of the upper and lower jaw base.
  • the scan data acquisition unit is further configured to collect upper and lower edentulous jaw and neutral zone jaw data with a median relationship based on a three-dimensional laser scanning technique with spatial positional relationship.
  • the upper and lower edentulous and neutral region jaw data with a median relationship are used to accurately restore the patient's personalized intermaxillary relationship.
  • the dentition base data acquisition unit is further configured to: register the gypsum model obtained by scanning and the dental tray, and import the software into the software of the full denture design method based on the CAD/RP technology to create the tooth After the plane and the dental floss are combined, the three-dimensional graphic database of the complete denture artificial teeth based on parametric positioning is used to find and arrange the upper and lower teeth, complete the CAD of the dentition data, and extract the upper and lower jaw proximal iliac line to complete the data of the upper and lower jaw base.
  • CAD CAD
  • the dentition data acquisition subunit is further used for designing a full denture in accordance with the theory of neutral zone and full denture balanced jaw teeth based on reverse engineering software and a three-dimensional graphic database of full denture artificial teeth based on parameterized positioning.
  • the artificial dentition; the upper and lower jaw base data acquisition subunit is also used to design the gums and bases according to the theory and aesthetic principles of the complete denture neutral zone based on the reverse engineering software.
  • the parameterized positioning comprises: creating a logical relationship between each artificial tooth positioning coordinate system, the attitude coordinate system, the positioning marker point, and/or the fullness marker point according to the anatomical features of the artificial tooth and the complete denture toothing theory. Fully necessary mathematical description.
  • Such a device can process the edentulous jaw model and the ivory scan data, obtain dentition data and upper and lower jaw base data, and then layer the data, and set different color layers according to clinical colorimetric results, which is convenient.
  • FIG. 1 is a flow chart of one embodiment of a method of making a full denture of the present invention.
  • FIG. 2 is a flow chart of another embodiment of a method of making a full denture of the present invention.
  • FIG 3 is a schematic view of one embodiment of a method of making a full denture of the present invention.
  • FIG. 4 is a schematic view of an embodiment of a device for making a full denture of the present invention.
  • Fig. 5 is a schematic view showing another embodiment of the apparatus for manufacturing a complete denture according to the present invention.
  • FIG. 1 A flow chart of one embodiment of a full denture manufacturing method of the present invention is shown in FIG.
  • step 101 the edentulous jaw model and the occlusion scan data are obtained by scanning the edentulous jaw model and the occlusal holder.
  • the dentition data and the upper and lower jaw base data are acquired by registering and arranging the scan data according to the edentulous model and the occlusion scan data.
  • the edentulous jaw model and the occlusion scan data need to be registered, and the occlusal plane and the dental floss are created based on the registered data, and the full denture artificial tooth based on the parameterized positioning is three-dimensionally patterned.
  • the database arranges the upper and lower teeth to obtain the dentition data; extracts the boundary line between the upper and lower jaws and obtains the data of the upper and lower jaw base.
  • step 103 based on the dentition data and the upper and lower jaw base data, according to the clinical colorimetric result, the color layer is normalized in the occlusal plane, and the different color layers are marked on the starting and ending plane of the occlusal plane to be replaced. Separation denture data is generated by the interface of different color materials.
  • the edentulous jaw model and the ivory scan data can be processed to obtain dentition data and upper and lower jaw base data, and the data is layered, and different color layers are set according to clinical colorimetric results. It is convenient to use the numerical control equipment to carry out the replacement of different color materials during the complete denture molding, thereby realizing the rapid production of multi-color full dentures and improving the efficiency and aesthetics of the complete denture production.
  • FIG. 1 A flow chart of another embodiment of a method of making a full denture of the present invention is shown in FIG.
  • step 201 the patient's edentulous gypsum model and the occlusal holder are obtained.
  • step 202 the obtained plaster model and dental tray are scanned using a dental model three-dimensional scanner.
  • step 203 the gypsum model obtained by scanning and the dental tray are registered, and the software is integrated into the software of the complete denture design method based on CAD/RP (rapid rapid prototyping) technology, and the occlusal plane and the dental floss are created.
  • the three-dimensional graphic database of the complete denture artificial teeth based on parametric positioning is used to find out the upper and lower teeth, complete the CAD of the dentition data, and extract the CAD of the upper and lower jaw base data after extracting the boundary line between the upper and lower jaws.
  • step 204 the CAD of the dentition data and the CAD of the upper and lower jaw base data are imported into the matching software of the numerical control processing device, and according to the clinical colorimetric result, the color layer distinguished by the color model is set in the occlusal plane normal direction, each layer Represents a color that marks the starting and ending planes of different color layers in the normal direction of the occlusal plane as an interface for replacing materials of different colors.
  • step 205 the numerical control processing equipment and its supporting software, and the PMMA materials of various color models are applied to perform multi-color full denture printing and forming the complete denture.
  • a one-time digital processing and forming of a multi-color material complete denture restoration is realized.
  • the designed data is directly integrated and processed, which reduces the manufacturing errors caused by the process of making the box, inserting the artificial teeth, and pressing the glue, so that the complete denture restoration is more accurate.
  • the full denture CAD software for the denture design of the personalized occlusal surface can be reflected in the processed denture artificial teeth, and the commercial artificial teeth can not reflect the full denture CAD software on the dentition
  • the design result reducing the time of complicated occlusion procedure when wearing teeth, and reducing the manufacturing cost of special occlusion type.
  • the PMMA material comprises a base material and an artificial tooth material
  • the base material is a gum pink
  • the artificial tooth material is a tooth white
  • Saturation and brightness are divided into several models. According to the clinical colorimetric results, different types of base and artificial tooth materials can be individually selected and combined. This method enables the creation of a full-feminal denture that is more aesthetically pleasing and conforms to the true oral color.
  • the CNC machining equipment can be a three-dimensional printer.
  • the three-dimensional printer and supporting software can be a three-headed polymer material three-dimensional printer and supporting software based on melt-coated FDM technology.
  • the three-dimensional printer can also be a light-cured three-dimensional printer or DLP (Digital Light Processing, Digital light processing) Devices such as 3D printers.
  • DLP Digital Light Processing, Digital light processing
  • the normal starting and ending plane of the occlusal plane is parallel to the occlusal plane.
  • this method is more in line with the color stratification of the human teeth and gums, and on the other hand, it is convenient to replace the material at the position of the starting and ending plane when printing in a three-dimensional printer, so that the number of materials printed simultaneously in the three-dimensional printer is limited. , to print a full denture with richer color and better fit to the human mouth color.
  • step 205 may further include: the numerical control processing device is an FDM three-dimensional printer, and the base material wire and the artificial tooth material wire are respectively input into the dual nozzles of the FDM three-dimensional printer, and the base material wire and the artificial tooth material wire are heated.
  • the numerical control processing device is an FDM three-dimensional printer
  • the base material wire and the artificial tooth material wire are respectively input into the dual nozzles of the FDM three-dimensional printer, and the base material wire and the artificial tooth material wire are heated.
  • droplets are ejected from the nozzle discharge port, and the three-axis motion control system of the numerical control processing device controls the full denture profile of each two-dimensional printing section, and each two-dimensional printing section is parallel to the occlusal plane.
  • the print table is lowered by 100 ⁇ m, or the print head is raised by 100 ⁇ m, and the print head starts printing on the next two-dimensional surface, and the layers are stacked to form a denture.
  • FIG. 401 is a scan data acquisition unit, which can scan the edentulous jaw model and the occlusion tray. Obtain edentulous jaw model and edentulous scan data.
  • 402 is a dentition data acquisition unit capable of registering and arranging teeth on the scan data according to the edentulous jaw model and the ivory scan data, and acquiring dentition data and upper and lower jaw base data.
  • the 403 is a color separation data acquisition unit for setting a color layer in the normal direction of the occlusal plane based on the dentition data and the upper and lower jaw base data, and marking different color layers in the occlusal plane normal direction according to the clinical colorimetric result.
  • the start and stop planes are used as interface for replacing different color materials to generate color separation denture data.
  • Such a device can process the edentulous jaw model and the ivory scan data, obtain dentition data and upper and lower jaw base data, and then layer the data, and set different color layers according to clinical colorimetric results, which is convenient.
  • the full denture manufacturing apparatus of the present invention further includes a numerical control processing apparatus capable of making a full denture using the PMMA material of the corresponding color model according to the color separation denture data acquired by the color separation data acquiring unit 403.
  • a numerical control processing apparatus capable of making a full denture using the PMMA material of the corresponding color model according to the color separation denture data acquired by the color separation data acquiring unit 403.
  • Such a device can form a full denture in one time according to the color separation denture data, thereby improving the production efficiency of the full denture.
  • the numerically controlled processing apparatus can be a three-dimensional printer that prints using different color base materials and artificial tooth materials.
  • Such a numerical control processing equipment is easy to obtain, and the cost is relatively low, which is convenient for popularization and use.
  • the normal starting and ending plane of the occlusal plane is parallel to the occlusal plane.
  • Such a device is more in line with the color stratification of the human teeth and gums, and on the other hand, it is convenient to replace the material at the starting and ending plane when printing in a three-dimensional printer, so that the number of materials printed simultaneously in the three-dimensional printer is limited. , to print a full denture with richer color and better fit to the human mouth color.
  • the complete denture design method based on CAD/RP technology mentioned above includes:
  • the acquisition has a middle The relationship between the upper and lower edentulous jaw and the neutral zone jaw data. According to the three-dimensional data of the upper and lower edentulous jaw alveolar ridge and the occlusion, the patient's personalized intermaxillary relationship can be accurately restored.
  • 501 is a scan data acquisition unit, which can collect upper and lower edentulous jaw and neutral zone jaw data with a median relationship based on a three-dimensional laser scanning technique with spatial positional relationship.
  • a dentition data acquisition unit for registering the gypsum model and the dental tray obtained by scanning, and introducing into the software of the complete denture design method based on CAD/RP technology, creating an occlusal plane and After the dental floss, the three-dimensional graphic database of the complete denture artificial teeth based on parametric positioning is used to find out the upper and lower teeth, complete the CAD of the dentition data, and extract the CAD of the upper and lower jaw base data after extracting the boundary line of the upper and lower jaw.
  • the dentition data acquisition unit 502 includes a dentition data acquisition subunit 512 and an upper and lower jaw base data acquisition subunit 522, and the dentition data acquisition subunit 512 can be based on reverse engineering software and full denture artificial teeth based on parameterized positioning.
  • the three-dimensional graphics database is designed to fit the complete denture artificial dentition with neutral zone and full denture balanced jaw arrangement theory; the upper and lower jaw base data acquisition subunit 522 can be designed based on reverse engineering software to meet the theory of full denture neutral zone and The principles of the gums and base.
  • a color separation data acquisition unit which can import the CAD of the dentition data and the CAD of the upper and lower jaw base data into the matching software of the numerical control processing equipment, and set the color differentiated by the color model in the occlusal plane normal direction according to the clinical colorimetric result. Layers, each layer representing a color, marking the different color layers in the normal starting and ending plane of the occlusal plane as an interface for replacing different color materials.
  • Such a device can design and manufacture a complete denture based on CAD/RP technology, simplifies the processing procedure, realizes one-time digital processing and forming of a multi-color material full denture prosthesis, and simplifies the work intensity of the medical staff, so that the formed Full denture restorations are more aesthetically pleasing and precise.
  • the processing molding material used in the present invention is a resin material PMMA (polymethyl methacrylate), which is a full denture material commonly used in clinical practice.
  • PMMA polymethyl methacrylate
  • the self-adhesive resin material is recommended for the bonding material used, but it can be selected by the technician or physician according to the clinical needs in practical application.
  • Occclusion also known as occlusion, refers to the contact relationship between the upper and lower dentitions.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention concerne un procédé de fabrication pour prothèses dentaires totales, comprenant : le balayage d'un moulage édenté et d'une plaque d'occlusion afin d'obtenir des données de balayage de moulage édenté et de plaque d'occlusion (101) ; sur la base des données de balayage du moulage édenté et de la plaque d'occlusion, l'alignement et l'agencement de dents pour obtenir des données d'agencement de dents et des données de plaque de base de mâchoires supérieure et inférieure (102) ; et, sur la base de résultats de comparaisons de couleurs cliniques, la conception de couches de couleur le long de la normale du plan occlusal, et le marquage des plans de début/fin desdites couches de couleur le long de la normale du plan occlusal de manière à fixer des limites pour différents matériaux de coloration, puis ensuite la génération de données de prothèses dentaires différenciées par la couleur (103). L'obtention de données d'agencement de dents et de données de plaque de base de mâchoires supérieure et inférieure de cette façon et la réalisation d'un traitement différencié par la couleur rend pratique d'alterner entre différents matériaux colorants lors de l'utilisation de dispositifs à commande numérique pour la fabrication de moulages pour prothèses dentaires totales, permettant ainsi la fabrication rapide de prothèses dentaires complètes multicolores, et rendant la fabrication de prothèses dentaires complètes plus efficace et les prothèses dentaires plus esthétiquement agréables. La présente invention concerne en outre un dispositif de fabrication de prothèses dentaires totales.
PCT/CN2015/092414 2014-10-23 2015-10-21 Procédé de fabrication et dispositif de fabrication pour prothèses dentaires totales WO2016062247A1 (fr)

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