CN108992193A - A kind of Dental Erosion auxiliary design method - Google Patents
A kind of Dental Erosion auxiliary design method Download PDFInfo
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- CN108992193A CN108992193A CN201710416640.4A CN201710416640A CN108992193A CN 108992193 A CN108992193 A CN 108992193A CN 201710416640 A CN201710416640 A CN 201710416640A CN 108992193 A CN108992193 A CN 108992193A
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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
- A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
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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
- A61C13/0001—In-situ dentures; Trial or temporary dentures
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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
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
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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
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
- A61C13/0019—Production methods using three dimensional printing
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- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a kind of Dental Erosion auxiliary design method, this method passes through three-dimensional scanner quick obtaining three-dimensional face model, the high-precision tooth digital three-dimensional model of patient.By the matching relationship of two models, the texture maps of acquisition are attached on tooth digital three-dimensional model, and are registrated in faceform oral cavity.Then single or more the replacements of standard tooth moulds single or multiple teeths to be repaired are taken.Doctor carries out repair capsule to tooth by adjusting standard tooth mould parameter, complies with aesthetics design and patient requests.Patient may browse through the threedimensional model after oneself Dental Erosion simultaneously, more true and reliable.The good tooth of final design can directly print entity tooth, then imprint out former.Medicine repair materials are poured into former, and former is then set to the tooth to be repaired of patient or on the tooth after tooth, after material solidification to be repaired is on tooth, take out former, it is final to realize Dental Erosion Computer Aided Design.
Description
Technical field:
The invention belongs to medical cosmetology fields, are related to a kind of three-dimensional stomatological aesthetics design method, are that a kind of Dental Erosion is auxiliary
Implemented method.
Background technique:
Recently as the research that deepens continuously of labial teeth aesthetic orthopaedics, oral cavity doctor thinks that design is the starting point and spirit of aesthetics
Where soul, and the aesthetic orthopaedics that number smile design (digital smile design, DSD) technology is current relatively forward position are set
Meter means.The concept of DSD is proposed by Brazilian dentist Coachman and its team, and DSD technology is one in aesthetic orthopaedics
Multiduty tool, using softwares such as Keynote, Photoshop, DSS or ezDSDpro, by soft or hard to patient facial region and oral cavity
Tissue carries out the digitized simulation of the accurate analysis of digital quantization, design and treatment results, and doctor and patient can be intuitively
Effect after to reparation；In addition, DSD can also improve diagnosis efficiency, reinforce doctor patient communication, reinforce in entire therapeutic process can
Foresight makes patient be easier to receive treatment.Therefore, the fashionable whole world in recent years DSD, the favor by world oral cavity doctor.
Currently, the design software for DSD is mostly two-dimensional i.e. 2DDSD, shoots front by digital camera and smile and shine
Piece, positive pulling mouth are shone, and photo is imported the softwares such as Keynote, Photoshop, DSS and ezDSDpro and carries out digital quantity to tooth
The accurate analysis and design changed, including setting for the parameters such as tooth scale and color, dental arch middle line, upper incisor incisxal edge radian
Meter, and personalized designs are completed according to the requirement of patient.But there are many problems by current 2DDSD, due to being that two dimension cannot obtain
Design tooth practical three-dimensional dimension, so design after effect picture may also not be it is too ideal, can only as one reference,
It for doctor patient communication, but can not directly be processed to design centre, design centre is needed to re-start design.In addition, two
Design process is very cumbersome is not easy to learn for dimension, and design comparison is time-consuming.
Summary of the invention
The purpose of the present invention is to provide a kind of Dental Erosion auxiliary design methods.
The purpose of the present invention is to provide a kind of Dental Erosion auxiliary design method and devices.This method passes through 3-D scanning
Device quick obtaining three-dimensional face model, the high-precision tooth digital three-dimensional model of patient.By the matching relationship of two models,
The texture maps of acquisition are attached on tooth digital three-dimensional model, and are registrated in faceform oral cavity.Then take single or
More standard tooth moulds go to replace single to be repaired or multiple teeth.Doctor repairs tooth by adjusting standard tooth mould parameter
Design, complies with aesthetics design and patient requests.Patient may browse through the threedimensional model after oneself Dental Erosion simultaneously, more
It is true and reliable.The good tooth of final design directly can print or process entity tooth, then imprint out former, standby patient's tooth,；
After material solidification to be repaired is on the tooth of patient, former is taken out；At this point, patient adheres to the tooth effect of repair materials, i.e.,
For the interim artificial tooth after reparation.It is final to realize Dental Erosion Computer Aided Design.
The object of the invention: a kind of new Dental Aesthetic design method and device are provided
Realize the technical solution of the present invention is as follows:
Step 1: acquisition two kinds of threedimensional models of patient, are model one, model two respectively；Model is first is that patient's face is three-dimensional
Mathematical model, in collection model a period of time, patient should exposed portion tooth.Model is second is that the high-precision tooth digital three-dimensional of patient
Model, the acquisition of the model include two kinds of implementation methods.The first, directly scans trouble using spatial digitizer in the dentistry mouth of oral cavity
The tooth of person obtains digital three-dimensional model.Second, using spatial digitizer scan patient teeth's overmolded after solid model come
Obtain the threedimensional model of patient teeth.
Step 2: model one and model two are matched；Matched method is the coincidence using model one and model two
Region calculates the coordinate conversion relation of the two.
Step 3: model two, is put into the cavity interior of model one by the tooth and gum that expose in removal model one.Model
The two space coordinate transformation relationships for being put into model one are determined by second step.The texture mapping of tooth and gum in model one is arrived
On model two.The texture that part tooth is removed in model one carries out the scanner of 3-D scanning from the first step to face, or
The external equipment for having imaging function of person, the equipment are slr camera, digital camera, industrial camera, monitoring camera or mobile phone
Video camera.The equipment and spatial digitizer are demarcated using when such external imaging device.So that exposing in model one
Tooth and gum data replaced by high-precision data in model two.Model after merging is model three.
Step 4: doctor chooses single that needs to repair in model three or multiple teeth, its three-dimensional data is deleted；
Step 5: from the dental template library of standard, selection standard tooth model, i.e. model four；Model four is put into mould
Corresponding deleted vacancy in type three；Doctor adjusts the parameter of model four, until patient satisfaction；At this point, model three and model four
Merge and generates model five；Model five by 3D printing or is machined as physical model.
Step 6: physical model overmolded in the 5th step is obtained former；After doctor carries out standby tooth to patient, in former
In pour into appropriate medicine repair materials, then the former is covered on the tooth of patient；Tooth of the material solidification to be repaired in patient
After on tooth, former is taken out；At this point, patient adheres to the tooth effect of repair materials, the interim artificial tooth after as repairing.
Step 7: doctor and patient carry out communication confirmation to the interim artificial tooth in the 6th step；If necessary to modification, weight
It is newly executed from the 5th step, until doctor and patient confirm that repairing effect reaches ideal effect.
Beneficial effect
This method passes through three-dimensional scanning device quick obtaining model one, model two.Doctor on threedimensional model by carrying out
Dental Erosion design, patient may browse through the threedimensional model after oneself Dental Erosion, more true and reliable, and three dimensional design letter
It is single easy to operate.The design parameter is used directly for processing and fabricating mock up (diagnosing facing in Dental Aesthetic reparation), eliminates
Wax up (diagnosing wax pattern in Dental Aesthetic reparation) this link, accelerates entire dental prosthetics design process.Based on three-dimensional number
Word smile design can overcome the number of drawbacks of two-dimentional DSD, improve DSD design.
Detailed description of the invention
Fig. 1 is Dental Erosion auxiliary design method flow chart.
Specific embodiment
The present invention will be described in detail for lower mask body combination attached drawing 1.
Step 1: acquisition two kinds of threedimensional models of patient, are model one, model two respectively；Model one is patient's smile dew tooth
The colorful three-dimensional model scanned under state, referred to as smile model；Or patient sufficiently exposes tooth under pulling mouth device auxiliary
The colorful three-dimensional model that tooth and gum status scan obtain, referred to as pulling mouth model；Or two kinds of models exist simultaneously.Model two
It is the high-precision tooth digital three-dimensional model of patient, the acquisition of the model includes two kinds of implementation methods.The first, utilizes dental
The tooth that spatial digitizer directly scans patient in section mouthful obtains digital three-dimensional model.It second, is scanned using spatial digitizer
Solid model after patient teeth's overmolded obtains the threedimensional model of patient teeth.
The above-mentioned acquisition for model combines reconstruction threedimensional model with technique of binocular stereoscopic vision using structured light projection；
Optical grating projection is realized by projection arrangement, solution phase is carried out to the raster pattern of camera acquisition, is matched by this group of phase
Seek the disparity map that parallax obtains.It, can using binocular stereo vision according to the inside and outside parameter of the disparity map of acquisition and camera calibration
Reconstruct the three-dimensional coordinate of spatial point.Binocular stereo vision utilizes principle of parallax, obtains testee according to optic triangle method
Depth information.The parallax found out by upper step, which substitutes into (1) formula, can reconstruct the three-dimensional coordinate of spatial point.
The D world space coordinate of P can be obtained by triangle relation:
F is main away from b is baseline length in formula.The world coordinates of one spatial point P is (xw,yw,zw), P is in left and right video camera
Coordinate in imaging plane is respectively P1(u1,v1) and P2(u2,v2)。
Step 2: model one and model two are matched；Matched method is the coincidence using model one and model two
Region calculates the coordinate conversion relation of the two.
Model one and model two are realized using ICP (Internative Closest Points) algorithm automates registration,
ICP algorithm is the corresponding relationship for finding out the point set that two have overlapping region, and solves its coordinate transform according to space corresponding points.Root
Model two is coordinately transformed RT (rotation and translation) according to coordinate conversion relation, two models are registrated to together.
When model one is only smile model or pulling mouth model, directly registration model one and model two according to the method described above.Mould
Smile model and pulling mouth model and when depositing in type one, by model three and pulling mouth Model registration, which is referred to model three
By coordinate transform go to pulling mouth model coordinate system under, such model three can carry out pair with the tooth in pulling mouth model
Together；Same method seeks the transformational relation of pulling mouth model Yu smile model, and model three may be implemented and be first transformed into pulling mouth model
Coordinate system under align, then convert it to smile model coordinate system under, it is a pair of to realize model two and model
Together, to model three is accurately put into the oral cavity of model one, the position of the original intracavitary tooth of model a bite is replaced.
Step 3: model two, is put into the cavity interior of model one by the tooth and gum that expose in removal model one.Model
The two space coordinate transformation relationships for being put into model one are determined by second step.The texture mapping of part tooth will be removed in model one
Onto model two.So that the tooth and gum data that expose in model one are replaced by high-precision data in model two.Merge
Model afterwards is model three.
Step 4: doctor chooses single that needs to repair in model three or multiple teeth, its three-dimensional data is deleted.
Step 5: from the dental template library of standard, selection standard tooth model, i.e. model four；Model four is put into mould
Corresponding deleted vacancy in type three.The parameter of standard tooth model (model four) includes X, Y, the translation of Z-direction, scaling, rotation
Turn and shape, also textured color, brightness, saturation degree, tone, contrast.Doctor adjusts its parameter, and patient can be clear
It lookes at the threedimensional model after oneself Dental Erosion, while the design can be modified by doctor patient communication doctor at any time.Reach satisfied effect
After fruit, aesthetic effect is met according to the generation of the volume relationship of model four and model three, directly can print or be machined and be
The threedimensional model (hereinafter referred to as model five) of entity.
Step 6: physical model overmolded in the 5th step is obtained former；After doctor carries out standby tooth to patient, in former
In pour into appropriate medicine repair materials, then the former is covered on the tooth of patient；Tooth of the material solidification to be repaired in patient
After on tooth, former is taken out；At this point, patient adheres to the tooth effect of repair materials, the interim artificial tooth after as repairing；
Step 7: doctor and patient carry out communication confirmation to the interim artificial tooth in the 6th step.If necessary to modification, weight
It is newly executed from the 5th step, until doctor and patient confirm that repairing effect reaches ideal effect.
Claims (5)
1. a kind of Dental Erosion auxiliary design method, which is characterized in that in accordance with the following steps:
Step 1: acquisition two kinds of threedimensional models of patient, are model one, model two respectively；Model is first is that patient's face 3-dimensional digital
Model, in collection model a period of time, patient exposed portion tooth；Model is somebody's turn to do second is that the high-precision tooth digital three-dimensional model of patient
The acquisition of model includes two kinds of implementation methods；The first, the tooth of patient is directly scanned using spatial digitizer in the dentistry mouth of oral cavity
Tooth obtains digital three-dimensional model；Second, the solid model after patient teeth's overmolded is scanned using spatial digitizer is suffered to obtain
The threedimensional model of person's tooth；
Step 2: model one and model two are matched；Matched method is the overlapping region using model one and model two
Calculate the coordinate conversion relation of the two；
Step 3: model two, is put into the cavity interior of model one by the tooth and gum that expose in removal model one；Model two is put
The space coordinate transformation relationship for entering model one is determined by second step；By the texture mapping of tooth and gum in model one to model
On two；So that the tooth and gum data that expose in model one are replaced by high-precision data in model two；Replaced mould
Type is model three；
Step 4: doctor chooses single that needs to repair in model three or multiple teeth, its three-dimensional data is deleted；
Step 5: from the dental template library of standard, selection standard tooth model, i.e. model four；Model four is put into model three
In corresponding deleted vacancy；Doctor adjusts the parameter of model four, until patient satisfaction；At this point, model three and model four merge
Generate model five；Model five by 3D printing or is machined as physical model；
Step 6: physical model overmolded in the 5th step is obtained former；After doctor carries out standby tooth to patient, filled in former
Enter appropriate medicine repair materials, then covers the former on the tooth of patient；Material solidification to be repaired is on the tooth of patient
Later, former is taken out；At this point, patient adheres to the tooth effect of repair materials, the interim artificial tooth after as repairing；
Step 7: doctor and patient carry out communication confirmation to the interim artificial tooth in the 6th step；If necessary to modification, again from
5th step executes, until doctor and patient confirm that repairing effect reaches ideal effect.
2. Dental Erosion auxiliary design method as described in claim 1, which is characterized in that in the first step, model one is to suffer from
The colorful three-dimensional model scanned under person's smile dew dental phenomenon, referred to as smile model；Or patient is under pulling mouth device auxiliary
Sufficiently show one's teeth the colorful three-dimensional model obtained with gum status scan, referred to as pulling mouth model；Or two kinds of models are simultaneously
In the presence of.
3. Dental Erosion auxiliary design method as described in claim 1, which is characterized in that in the second step, model one and mould
There are three kinds of situations for the registration of type two；The first, the registration between smile model and model two；Second, pulling mouth model and mould
The registration of type two；The third, smile model and model two are respectively and after pulling mouth Model registration, complete using above-mentioned registration relationship
At the registration between smile model and model two.
4. Dental Erosion auxiliary design method as described in claim 1, which is characterized in that in the third step, quilt in model one
The texture of part tooth is removed to carry out the scanner of 3-D scanning to face from the first step or external have imaging function
Equipment, which is slr camera, digital camera, industrial camera, monitoring camera or mobile phone camera；It is set to outside using such
The equipment and spatial digitizer are demarcated when as equipment.
5. Dental Erosion auxiliary design method as described in claim 1, which is characterized in that in the 5th step, standard tooth mould
Type, i.e. model four；The parameter of model four includes X, Y, the translation of Z-direction, scaling, rotation and shape, also textured face
Color, brightness, saturation degree, tone, contrast.
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Cited By (3)
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| CN114078187A (en) * | 2020-08-14 | 2022-02-22 | 华硕电脑股份有限公司 | Method and system for establishing model of denture row |
| CN115120372A (en) * | 2022-05-25 | 2022-09-30 | 北京大学口腔医学院 | Three-dimensional prosthesis form and position determining method |
| RU2823455C1 (en) * | 2023-01-24 | 2024-07-23 | Общество с ограниченной ответственностью "Ваш личный доктор" | Method for determining color of single ceramic restorations for dental rehabilitation in aesthetically significant area using digital protocol |
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| CN108992193B (en) | 2020-12-15 |
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