WO2018076897A1 - Procédé et dispositif basés sur les racines dentaires pour agencement numérisé de dents - Google Patents

Procédé et dispositif basés sur les racines dentaires pour agencement numérisé de dents Download PDF

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Publication number
WO2018076897A1
WO2018076897A1 PCT/CN2017/097658 CN2017097658W WO2018076897A1 WO 2018076897 A1 WO2018076897 A1 WO 2018076897A1 CN 2017097658 W CN2017097658 W CN 2017097658W WO 2018076897 A1 WO2018076897 A1 WO 2018076897A1
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dimensional model
root
alveolar bone
crown
dimensional
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PCT/CN2017/097658
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English (en)
Chinese (zh)
Inventor
陈云
卢曙光
罗哲
朱成广
温小礼
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苏州迪凯尔医疗科技有限公司
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Priority claimed from CN201610956929.0A external-priority patent/CN106344186A/zh
Application filed by 苏州迪凯尔医疗科技有限公司 filed Critical 苏州迪凯尔医疗科技有限公司
Publication of WO2018076897A1 publication Critical patent/WO2018076897A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis

Definitions

  • the invention relates to orthodontic technology, in particular to a dental root-based digital tooth discharging method and device.
  • the existing orthodontic teeth are basically based on the patient's crown scan data, or using a direct intraoral scan, or using a scan of the patient's turned plaster model, and then digitally sorting the teeth based on the crown data.
  • the above method has a fundamental defect: the position of the crown and the root are changing during the tooth removal process, and the above method only simulates the position change process of the crown, which has great hidden dangers. For example, it is very likely that during the process of moving the crown, there is no concern about the movement of the root.
  • the root is moved to an inappropriate position, such as the cortical bone close to the alveolar bone, resulting in the absorption of the root tip, and more serious may cause the root to move out of the alveolar bone, resulting in bone initiation and cracking.
  • the present invention provides a root-based digital tooth discharging method comprising the following steps:
  • the three-dimensional model of the root and the three-dimensional model of the alveolar bone is used for tooth arrangement.
  • the method further includes:
  • a minimum safe distance between the root and the alveolar bone is preset.
  • the three-dimensional model of the crown, the root and the alveolar bone according to the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone includes:
  • the three-dimensional model of each of the crown, the root and the alveolar bone is further arranged to include:
  • the tooth row is stopped and/or restarted when the minimum distance is less than or equal to the minimum safety distance.
  • the minimum distance between the three-dimensional model of acquiring the root and the three-dimensional model of the alveolar bone comprises:
  • a minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone is obtained in real time in the row of teeth.
  • the method further comprises:
  • a relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone is displayed in real time in the row of teeth.
  • the row of teeth comprises: translating or rotating a three-dimensional model of the crown and/or a three-dimensional model of the root.
  • the three-dimensional model for obtaining the crown, the root and the alveolar bone in the oral cavity comprises:
  • image scan data of the oral cavity wherein the image scan data comprises three-dimensional lattice data or a continuous two-dimensional projection data sequence;
  • a three-dimensional model of each of the crown, the root and the alveolar bone in the oral cavity is obtained through a three-dimensional modeling process.
  • the image scan data is a cone beam projection computer reconstructed tomographic image data.
  • the three-dimensional model of each of the crown, the root and the alveolar bone is used for the tooth arrangement comprising:
  • the three-dimensional model of the root and the three-dimensional model of the crown are arranged as a whole.
  • An embodiment of the present invention further provides a dental root-based digital dental dislocation device, comprising:
  • a model acquisition module configured to acquire a three-dimensional model of each of the crown, the root, and the alveolar bone in the oral cavity; as well as
  • the tooth arrangement module is configured to perform tooth arrangement by using a three-dimensional model of the crown, the root and the alveolar bone according to a relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone.
  • the device further comprises:
  • a preset module configured to preset a minimum safety distance between the root and the alveolar bone before the row of teeth is performed by the dental module.
  • the dental module comprises:
  • a distance acquisition unit configured to acquire a minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone
  • the processing unit is configured to return, when the minimum distance is less than or equal to the minimum safety distance, prompt information indicating that the relative position of the three-dimensional model of the root and the three-dimensional model of the alveolar bone is abnormal.
  • the processing unit is further configured to stop and/or restart the tooth row when the minimum distance is less than or equal to the minimum safety distance.
  • the acquiring unit is further configured to acquire a minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone in the teeth in real time.
  • the device further comprises:
  • a display module configured to display a relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone in real time in the row of teeth.
  • teeth arranged by the dental module comprise: translating or rotating a three-dimensional model of the crown and/or a three-dimensional model of the root.
  • the model obtaining module includes:
  • a data acquisition unit configured to acquire image scan data of the oral cavity, wherein the image scan data includes three-dimensional lattice data or a continuous two-dimensional projection data sequence;
  • the three-dimensional modeling unit is configured to acquire a three-dimensional model of each of the crown, the root and the alveolar bone in the oral cavity through the three-dimensional modeling process according to the image scanning data.
  • the image scan data is a cone beam projection computer reconstructed tomographic image data.
  • the dental dislocation module is further configured to: arrange the three-dimensional model of the root and the three-dimensional model of the crown as a whole.
  • a three-dimensional model of the root, crown and alveolar bone in the patient's mouth is obtained, and the root, crown and alveolar bone are used in the subsequent use.
  • the three-dimensional model in addition to the relative positional relationship between the three-dimensional models of different crowns, it is necessary to pay attention to the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone. Effectively avoid the absorption of the apex caused by the cortical bone which is too close to the alveolar bone during the subsequent orthodontic treatment, and the bone initiation and bone cracking caused by the root removal of the alveolar bone.
  • FIG. 1 is a schematic flow chart of a method for digitizing a tooth based on a root according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart showing the arrangement of teeth in a dental root-based digital tooth discharging method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a dental root-based digital tooth discharging method according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a dental root-based digital dental dislocation device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a dental root-based digital dental dislocation device according to another embodiment of the present invention.
  • FIG. 1 is a schematic flow chart of a method for digitizing a tooth based on a root according to an embodiment of the present invention. As shown in Figure 1, the method includes:
  • Step 101 Obtain a three-dimensional model of each of the crown, root and alveolar bone in the oral cavity.
  • the three-dimensional model of the crown, root and alveolar bone in the oral cavity can be obtained through a three-dimensional modeling process.
  • the image scanning data of the oral cavity may be acquired by image scanning technology, and the image scanning data may include three-dimensional lattice data or a continuous two-dimensional projection data sequence.
  • the surface mesh data is generated by the computer algorithm according to the three-dimensional lattice data, or the gap portion between the two-dimensional projection data sequences in the image scan data is completed by using computer simulation technology to form a complete three-dimensional model of the oral cavity, thereby obtaining A three-dimensional model of the crown, root and alveolar bone in the oral cavity.
  • Step 102 According to the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone, The three-dimensional model of the crown, root and alveolar bone is used for tooth arrangement.
  • the tooth arrangement refers to the process of simulating the effect of the final correction target by adjusting the position and angle of the three-dimensional model of the crown and/or the root.
  • the subsequent orthodontic treatment process is based on the result of the tooth arrangement of the teeth, so the teeth are arranged.
  • the quality of the results directly affects the therapeutic effect of the subsequent orthodontic treatment.
  • the specific adjustment of the teeth may include translating or rotating the three-dimensional model of the crown and/or the three-dimensional model of the root.
  • the teeth may include only a three-dimensional model of the crown or a three-dimensional model of the gum, or may include a three-dimensional model of the crown and a three-dimensional model of the gum.
  • the three-dimensional model of the root and the three-dimensional model of the crown may be used as a whole to perform the tooth-discharging process. That is, the three-dimensional model of the root and the three-dimensional model of the crown are spliced into a holistic model (for example, using a graphic splicing technique), and the dentition process is completed by translating or rotating the holistic model. In this way, during the tooth-discharging process, the final target of the correction can be judged by observing the position of the crown, and the cortical bone whose root is too close to the alveolar bone can be avoided.
  • a holistic model for example, using a graphic splicing technique
  • the minimum safe distance between the root and the alveolar bone can be preset before the tooth is arranged.
  • the following steps may be further included in the three-dimensional model of the crown, the root and the alveolar bone:
  • Step 201 Acquire a minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone.
  • the minimum distance is used to characterize the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone in the current state, and is compared with a preset minimum safe distance in a subsequent process.
  • Step 202 When the minimum distance is less than or equal to the minimum safety distance, returning prompt information indicating that the relative position of the three-dimensional model of the root and the three-dimensional model of the alveolar bone is abnormal.
  • the minimum distance when the minimum distance is less than or equal to the preset minimum safety distance, it indicates that the three-dimensional model of the root in the current state is too close to the three-dimensional model of the alveolar bone, if the subsequent orthodontic treatment process is performed according to the current tooth arrangement result. If it is, it is likely to cause problems such as apical absorption, bone initiation and bone cracking. Therefore, it is necessary to return a prompt message to indicate that the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone has exceeded the normal range.
  • the minimum distance when the minimum distance is less than or equal to the preset At the minimum safe distance, the teeth can be stopped and/or restarted immediately to avoid the potential for orthodontic treatment according to the current dental results.
  • the minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone can be obtained in real time during the tooth-discharging process, so that the minimum distance is less than or equal to the preset minimum safe distance.
  • the acquisition of the minimum distance may be performed after each tooth discharge is completed.
  • the timing of acquiring the minimum distance of the present invention is not limited.
  • the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone can be displayed in real time during the tooth arrangement, for example, the three-dimensional model of the root can be displayed in real time through a graphical display manner.
  • the relative positional relationship with the three-dimensional model of the alveolar bone so that the medical staff can more intuitively observe the relative position between the three-dimensional model of the root and the three-dimensional model of the alveolar bone, which helps the medical staff to make more accurate Judging, improving the user experience.
  • the step of real-time display may not be included, which is not limited by the present invention.
  • the preset minimum safety distance may be set by the medical staff according to the actual condition of the teeth in the patient's mouth to ensure that a reasonable distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone is correct, and the present invention
  • the specific size of the preset minimum safety distance is not limited.
  • FIG. 3 is a schematic flow chart of a method for digitizing a tooth based on a root according to another embodiment of the present invention.
  • the root-based digital tooth-discharging method includes:
  • the image scan data of the oral cavity obtained in the embodiment of the present invention is oral CBCT data
  • the CBCT is an abbreviation of Cone beam CT, that is, a cone beam projection computer reconstructed tomographic image data.
  • the CBCT device is a cone beam projection computer recombination tomography device, and the principle is that the X-ray generator makes a circular digital projection around the projection body with a lower amount of radiation. Then, a plurality of two-dimensional projection data obtained in the "intersection" after multiple digital projections around the projection body are "recombined” in the computer to obtain the ordered stacked data of the two-dimensional projection data.
  • the ordered stacked data composed of two-dimensional projection data does not constitute a complete three-dimensional model.
  • oral CBCT data can also be described as three-dimensional lattice data.
  • the gap portion of the two-dimensional projection data is completed by a three-dimensional modeling process to form a complete three-dimensional model.
  • the oral CBCT data is described as three-dimensional lattice data
  • the surface mesh data is generated from the three-dimensional lattice data by a computer algorithm to complete the three-dimensional modeling process.
  • the step S2 and the step S3 may further include: setting a minimum safety distance between the root and the alveolar bone.
  • setting the minimum safety distance it is advantageous for the root and the socket The minimum distance between the bones is tested to determine if it meets safety standards.
  • the image scanning data used to establish the three-dimensional model of the alveolar bone, the root and the crown can also adopt other forms of image scanning data other than CBCT, according to different forms affecting the scanning data, and subsequent three-dimensional modeling.
  • the process can also be adjusted accordingly.
  • the specific form of the image scanning data and the specific manner of the three-dimensional modeling process are not limited by the present invention.
  • the root and the crown, the tooth and the root are integrally arranged, and the minimum safety distance between the alveolar bone and the root can be set before the tooth is arranged.
  • the overall tooth arrangement includes: an overall translation or rotation of the crown and the root.
  • the step S3 further includes: comparing the minimum distance between the root and the alveolar bone in real time during the overall tooth arrangement of the crown and the root. The relationship between the size of the minimum safety distance, if the minimum distance is less than the minimum safety distance, prompting the user, and the user can perform the overall tooth removal again. In this way, it can be ensured that the minimum distance between the root and the alveolar bone meets the safety standard.
  • the orthodontic treatment includes invisible or non-invisible correction.
  • the present invention further provides a root-based digital tooth arrangement device, comprising: an oral CBCT data acquisition module, a model acquisition module, an overall dental module, a graphic display module, orthodontic treatment Module.
  • the oral CBCT data acquisition module is configured to acquire patient oral CBCT data;
  • the model acquisition module is configured to perform three-dimensional modeling on the alveolar bone, the root and the crown respectively according to the obtained CBCT data;
  • the module is configured to perform overall tooth arrangement on the crown and the root according to the obtained three-dimensional model of the alveolar bone, the root and the crown;
  • the graphical display module is used to view the root and alveolar bone of each tooth after the tooth is completed. a minimum distance between the root and the minimum distance between the root and alveolar bone;
  • the orthodontic treatment module for outputting the result of the tooth arrangement and graphically displaying the result for the doctor to the patient Perform orthodontic treatment.
  • the digital dental dislocation device further includes: a reminding module, configured to compare the distance between the actual alveolar bone and the root after the tooth arrangement according to a minimum safety distance between the alveolar bone and the root set by the user, if the distance Less than the minimum safe distance, the user is graphically prompted.
  • a reminding module configured to compare the distance between the actual alveolar bone and the root after the tooth arrangement according to a minimum safety distance between the alveolar bone and the root set by the user, if the distance Less than the minimum safe distance, the user is graphically prompted.
  • the root-based digital tooth-discharging device models the patient's root, crown, and alveolar bone through a three-dimensional model, and can pay attention to it during the digital tooth-discharging process.
  • Positional relationship between the root and alveolar bone and can set the outermost surface of the root and alveolar bone A small distance, the minimum safe distance between the root and the alveolar bone of the alveolar bone is fully realized during the tooth removal process, and the occurrence of the removal of the alveolar bone from the root is avoided.
  • FIG. 4 is a schematic structural diagram of a dental root-based digital dental dislocation device according to an embodiment of the present invention. As shown in FIG. 4, the root-based digital dental dislocation device 40 includes:
  • a model acquisition module 41 configured to acquire a three-dimensional model of each of a crown, a root, and an alveolar bone in the oral cavity;
  • the teeth module 42 is configured to perform tooth arrangement using a three-dimensional model of the crown, the root and the alveolar bone according to the relative positional relationship between the three-dimensional model of the root and the three-dimensional model of the alveolar bone.
  • the root-based digital dental dislocation device 40 further includes: a preset module 43 configured to preset the root and alveolar bone before the teeth module 42 performs the tooth arrangement The minimum safe distance between.
  • the dental module 42 includes:
  • the distance acquisition unit 421 is configured to acquire a minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone;
  • the processing unit 422 is configured to return prompt information indicating that the relative position of the three-dimensional model of the root and the three-dimensional model of the alveolar bone is abnormal when the minimum distance is less than or equal to the minimum safe distance.
  • the processing unit 422 is further configured to stop and/or restart the teeth when the minimum distance is less than or equal to the minimum safety distance.
  • the acquiring unit is further configured to: acquire a minimum distance between the three-dimensional model of the root and the three-dimensional model of the alveolar bone in real time in the teeth.
  • the root-based digital dental dislocation device 40 further includes: a display module 44 configured to display a three-dimensional model of the root and a three-dimensional model of the alveolar bone in real time in the teeth The relative positional relationship between them.
  • the teeth performed by the teeth module 42 include: translation or rotation of a three-dimensional model of the crown and/or a three-dimensional model of the root.
  • the model obtaining module 41 includes:
  • the data acquisition unit 411 is configured to acquire image scan data of the oral cavity, wherein the image scan data includes three-dimensional lattice data or a continuous two-dimensional projection data sequence;
  • the three-dimensional modeling unit 412 is configured to acquire a three-dimensional model of each of the crown, the root and the alveolar bone in the oral cavity by a three-dimensional modeling process according to the image scan data.
  • the image scan data is a cone beam projection computer reconstructed tomographic image data.
  • the teeth module 42 is further configured to: arrange the three-dimensional model of the root and the three-dimensional model of the crown as a whole. Specifically, the three-dimensional model of the root and the three-dimensional model of the crown are first spliced into a single model (for example, using a graphic splicing technique), and then the dentition process is completed by translating or rotating the holistic model. In this way, when performing the tooth arrangement process, it is possible to observe the crown The position to determine the final target effect, but also to avoid the cortical bone too close to the alveolar bone.
  • each of the modules or units described in the root-based digital dental disposition device 40 provided by the above embodiments corresponds to one of the aforementioned method steps.
  • the operations, features, and advantages described in the foregoing method steps are equally applicable to the root-based digital dental dislocation device 40 and the corresponding modules and units included therein, and the repeated content will not be described herein.
  • the teachings of the present invention may also be embodied as a computer program product of a computer readable storage medium, comprising computer program code which, when executed by a processor, enables a processor to be implemented in accordance with a method of an embodiment of the present invention A root-based digital toothing method of embodiments herein.
  • the computer storage medium can be any tangible medium such as a floppy disk, CD-ROM, DVD, hard drive, or even network media.
  • an implementation form of the embodiments of the present invention described above may be a computer program product
  • the method or apparatus of the embodiments of the present invention may be implemented in software, hardware, or a combination of software and hardware.
  • the hardware portion can be implemented using dedicated logic; the software portion can be stored in memory and executed by a suitable instruction execution system, such as a microprocessor or dedicated design hardware.
  • a suitable instruction execution system such as a microprocessor or dedicated design hardware.
  • processor control code such as a carrier medium such as a magnetic disk, CD or DVD-ROM, such as a read only memory.
  • Such code is provided on a programmable memory (firmware) or on a data carrier such as an optical or electronic signal carrier.
  • the method and apparatus of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, etc., or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., also It can be implemented by software executed by various types of processors, or by a combination of the above-described hardware circuits and software such as firmware.
  • modules or units of the root-based digitizing device 40 are mentioned in the detailed description above, such divisions are merely exemplary and not mandatory.
  • the features and functions of the two or more modules/units described above may be implemented in one module/unit, and conversely, the features and functions of one module/unit described above.
  • the function can be further divided into multiple modules/units.
  • some of the modules/units described above may be omitted in certain application scenarios.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour un agencement numérisé de dents basé sur les racines dentaires, pouvant résoudre le problème dans lequel des agencements de dents existants ne sont pas en mesure d'empêcher efficacement l'absorption d'un apex de racine provoqué par une racine dentaire trop proche d'un os cortical d'un os alvéolaire, ainsi que le problème de l'ouverture osseuse et de la fissuration osseuse provoqué par le retrait de la racine dentaire de l'os alvéolaire. Le procédé basé sur les racines dentaires pour un agencement numérisé de dents comprend les étapes suivantes consistant à : obtenir un modèle tridimensionnel pour chacun(e) parmi une couronne dentaire, une racine de dent et un os alvéolaire dans une cavité buccale (101); et, en fonction d'une relation de position relative entre le modèle tridimensionnel de la racine dentaire et le modèle tridimensionnel de l'os alvéolaire, effectuer un agencement dentaire à l'aide des modèles tridimensionnels respectifs de la couronne dentaire, de la racine dentaire et de l'os alvéolaire (102).
PCT/CN2017/097658 2016-10-27 2017-08-16 Procédé et dispositif basés sur les racines dentaires pour agencement numérisé de dents WO2018076897A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610956929.0 2016-10-27
CN201610956929.0A CN106344186A (zh) 2016-10-27 2016-10-27 基于牙根的数字化排牙方法及装置
CN201710069091.8 2017-02-08
CN201710069091.8A CN107997835A (zh) 2016-10-27 2017-02-08 基于牙根的数字化排牙方法及装置

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Citations (7)

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CN102415916A (zh) * 2011-07-29 2012-04-18 首都医科大学附属北京口腔医院 防止正畸治疗过程中牙根和颌骨应力过度集中的矫治方法
EP2845564A1 (fr) * 2013-09-04 2015-03-11 OrthoSetup GmbH Procédé mis en oeuvre sur ordinateur destiné à produire un modèle de données 3D d'une mâchoire d'un patient
CN105596094A (zh) * 2016-02-01 2016-05-25 北京正齐口腔医疗技术有限公司 正畸间接粘接转移托盘三维数字化模型的生成方法及装置
CN105769353A (zh) * 2016-02-04 2016-07-20 北京正齐口腔医疗技术有限公司 自动化排牙方法及装置
CN105832432A (zh) * 2016-03-17 2016-08-10 边专 基于牙槽骨形态进行牙齿整体移动设计的隐形矫治方法
WO2016128828A1 (fr) * 2015-02-13 2016-08-18 Align Technology, Inc. Modélisation de dent tridimensionnelle à l'aide d'une image radiographique bidimensionnelle
CN106344186A (zh) * 2016-10-27 2017-01-25 苏州迪凯尔医疗科技有限公司 基于牙根的数字化排牙方法及装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102415916A (zh) * 2011-07-29 2012-04-18 首都医科大学附属北京口腔医院 防止正畸治疗过程中牙根和颌骨应力过度集中的矫治方法
EP2845564A1 (fr) * 2013-09-04 2015-03-11 OrthoSetup GmbH Procédé mis en oeuvre sur ordinateur destiné à produire un modèle de données 3D d'une mâchoire d'un patient
WO2016128828A1 (fr) * 2015-02-13 2016-08-18 Align Technology, Inc. Modélisation de dent tridimensionnelle à l'aide d'une image radiographique bidimensionnelle
CN105596094A (zh) * 2016-02-01 2016-05-25 北京正齐口腔医疗技术有限公司 正畸间接粘接转移托盘三维数字化模型的生成方法及装置
CN105769353A (zh) * 2016-02-04 2016-07-20 北京正齐口腔医疗技术有限公司 自动化排牙方法及装置
CN105832432A (zh) * 2016-03-17 2016-08-10 边专 基于牙槽骨形态进行牙齿整体移动设计的隐形矫治方法
CN106344186A (zh) * 2016-10-27 2017-01-25 苏州迪凯尔医疗科技有限公司 基于牙根的数字化排牙方法及装置

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