CN105653753A - Multi-reference point system aligned edentulous jaw model centric relation position three-dimensional reconstruction method - Google Patents
Multi-reference point system aligned edentulous jaw model centric relation position three-dimensional reconstruction method Download PDFInfo
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- CN105653753A CN105653753A CN201410730316.6A CN201410730316A CN105653753A CN 105653753 A CN105653753 A CN 105653753A CN 201410730316 A CN201410730316 A CN 201410730316A CN 105653753 A CN105653753 A CN 105653753A
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Abstract
The invention relates to a multi-reference point system aligned edentulous jaw model centric relation position three-dimensional reconstruction method. The method comprises steps of adhering three positioning columns with equal sizes on the axial surfaces of a pedestal of an upper edentulous jaw alveolar crest plaster model and a pedestal of a lower edentulous jaw alveolar crest plaster model; fixing the upper and lower jaw models to a centric relation position via an occlusion bearer, directly measuring center point coordinates of bottom surfaces of the six positioning columns via a contact type three coordinate measuring instrument and naming the center point coordinates as contact center point, scanning the upper and lower edentulous jaw digital model via a jaw model 3D scanner, introducing 3D reverse engineering software, fitting center points of the bottom surfaces of each positioning columns and naming the center point as a fitting center point, making the acquired positioning column bottom surface center points acquired via the above two methods as paired registering mark points, registering an order for the multi-referent point system via the 3D reverse engineering software, registering the upper and lower jaw digital models to the contact center point, and finishing three-dimensional reconstruction for the edentulous jaw model centric relation position. By the use of the method, three-dimensional reconstruction of the three-dimensional scanning data centric relation position of the edentulous jaw alveolar crest plaster model can be quickly achieved.
Description
Technical field
The present invention relates to a kind of edentulous jaw mathematical model spatial relationship three-dimensional rebuilding method, be specifically related to a kind of edentulous jaw model centric relation position three-dimensional rebuilding method based on the alignment of multiple reference points system.
Background technology
When carrying out the full occlusion of dentition reconstruction repairing and treatings such as complete denture for Edentulous Cases, hold in the palm at its physiological jaw relationship of the external accurate reproduction of patient and vertical dimension, horizontal relationship by edentulous jaw plaster model, | tooth conjunction |, be the Main Basis designing and producing personalized suitable artificial articulation.
When designing and producing complete denture by computer-aided design and manufacturing technology, it is necessary in a computer to upper edentia in mandible model, | tooth close | the jaw relationship of holder carries out three-dimensional reconstruction. The size of reconstruction error directly determines complete denture artificial articulation CAD precision. Different from there being denture plaster model, edentulous jaw alveolar ridge surface lacks the obvious geometrical morphology characteristic area of Curvature varying, and this will certainly affect the ICP registration Algorithm accuracy when realizing jaw relationship three-dimensional reconstruction. Simultaneously, when completing edentulous jaw model jaw position reconstruction of relations based on buccal labial surface common region ICP algorithm, needing to be respectively completed gnathode, the upper jaw | tooth closes | holder, mandibular model, lower jaw | tooth and closes | holder, double; two gnathode/| tooth conjunction | holder buccal labial surface entirety totally 5 scan operations, and need successively model is installed on machinery | tooth closes | frame, transfer | tooth and closes | frame, operating process is loaded down with trivial details, the link producing error is many, inefficient.
Summary of the invention
It is an object of the invention to provide the edentulous jaw model centric relation position three-dimensional rebuilding method of a kind of multiple reference points system alignment, can on only 3-D scanning under the premise of gnathode, 2 objects of mandibular model, the three-dimensional reconstruction of edentulous jaw model jaw relationship can be completed expeditiously, simplify the step of edentulous jaw plaster model 3 d scan data three-dimensional reconstruction.
In order to achieve the above object, the present invention has following technical scheme:
The edentulous jaw model centric relation position three-dimensional rebuilding method of a kind of multiple reference points system alignment of the present invention, it is characterised in that have following steps:
1) produce edentulous jaw alveolar ridge die, record plaster model, make wax | tooth closes | holder;
2) in CAD software, design the locating dowel of several same sizes, and use resin three-dimensional printer to print locating dowel, each bonding 3 locating dowels of single gnathode base axial face, make locating dowel be uniformly distributed in whole model;
3) by | tooth conjunction | holder, upper mandibular model is fixed on centric relation position;
4) directly measure 6 locating dowel bottom surface central coordinate of circle of upper lower jaw plaster model with Contacting three coordinates measurement instrument, create centre point called after contact method centre point;
5) obtain upper and lower jaw mathematical model with the scanning of dentognathic model spatial digitizer, import three-dimensional reverse engineering software, matching locating dowel bottom surface centre point, called after fitting process centre point, be stored as STL form;
6) centre point obtained based on above two method is pairing registration marks point, with the multiple reference points system alignment command of three-dimensional reverse engineering software, upper lower jaw mathematical model is registered against contact method centre point;
7) three-dimensional reconstruction of upper and lower edentulous jaw model 3 d scan data centric relation position so far, is completed.
Wherein, the basal diameter of described locating dowel is 6mm, and height is 5mm.
It is an advantage of the current invention that: only on 3-D scanning under the premise of gnathode, 2 objects of mandibular model, the three-dimensional reconstruction of edentulous jaw model centric relation position can be completed expeditiously, simplify reconstruction procedures.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of workflow of the present invention.
Detailed description of the invention
Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Referring to Fig. 1, the edentulous jaw model centric relation position three-dimensional rebuilding method of a kind of multiple reference points system alignment of the present invention, it is characterised in that have following steps:
1) produce edentulous jaw alveolar ridge die, record plaster model, make wax | tooth closes | holder;
2) in CAD software, design the locating dowel of several same sizes, and use resin three-dimensional printer to print locating dowel, each bonding 3 locating dowels of single gnathode base axial face, make locating dowel be uniformly distributed in whole model;
3) by | tooth conjunction | holder, upper mandibular model is fixed on centric relation position;
4) directly measure 6 locating dowel bottom surface central coordinate of circle of upper lower jaw plaster model with Contacting three coordinates measurement instrument, create centre point called after contact method centre point;
5) obtain upper and lower jaw mathematical model with the scanning of dentognathic model spatial digitizer, import three-dimensional reverse engineering software, matching locating dowel bottom surface centre point, called after fitting process centre point, be stored as STL form;
6) centre point obtained based on above two method is pairing registration marks point, with the multiple reference points system alignment command of three-dimensional reverse engineering software, upper lower jaw mathematical model is registered against contact method centre point;
7) three-dimensional reconstruction of upper and lower edentulous jaw model 3 d scan data centric relation position so far, is completed.
The basal diameter of described each locating dowel is 6mm, and height is 5mm.
3 locating dowels that described each single gnathode base axial face is bonding, will be uniformly distributed in single gnathode axial plane as far as possible.
Described Contacting three coordinates measurement instrument adopts U.S. Faroedge (Faro company of the U.S.) multiple degrees of freedom contact type measurement arm.
The multiple reference points system alignment command of described three-dimensional reverse engineering software, is registered against contact method centre point by upper lower jaw mathematical model.
Described dentognathic model spatial digitizer can adopt SmartOptics880DentalScanner company of Germany: model is SmartOptics scanner.
Step 5) three-dimensional reverse engineering software: adopt software I mageware13.0, by the reverse-engineering of Simens Company and 3D sculpting software;
Step 6) three-dimensional reverse engineering software: adopt software Geomagic2012, by the reverse-engineering of U.S. Raindrop (raindrop) Company and three-dimensional values software.
Alignment (alignment) refers to the coupling of the geographical coordinate of the different images figure obtained in the same area with different imaging means. Process including geometric correction, projective transformation and common scale chi three aspect. Alignment in the present invention, mainly for the data that twice 3-D scanning obtains, or approximately uniform regional area identical with three-dimensional configuration therebetween is for common region, by the process in the coordinate system matching of said one data to another data coordinate system.
| tooth closes | and (occlusion), also referred to as occlusion, refers to the Static Contact relation between upper and lower dentition.
As it has been described above, the present invention just can be realized comparatively fully. The foregoing is only the relatively reasonable embodiment of the present invention, protection scope of the present invention includes but are not limited to: this, and any the change based on unsubstantiality degeneration in technical solution of the present invention of those skilled in the art is included in the present invention and includes within scope.
Claims (2)
1. the edentulous jaw model centric relation position three-dimensional rebuilding method of a multiple reference points system alignment, it is characterised in that have following steps:
1) produce edentulous jaw alveolar ridge die, record plaster model, make wax | tooth closes | holder;
2) in CAD software, design the locating dowel of several same sizes, and use resin three-dimensional printer to print locating dowel, each bonding 3 locating dowels of single gnathode base axial face, make locating dowel be uniformly distributed in whole model;
3) by | tooth conjunction | holder, upper mandibular model is fixed on centric relation position;
4) directly measure 6 locating dowel bottom surface central coordinate of circle of upper lower jaw plaster model with Contacting three coordinates measurement instrument, create centre point called after contact method centre point;
5) obtain upper and lower jaw mathematical model with the scanning of dentognathic model spatial digitizer, import three-dimensional reverse engineering software, matching locating dowel bottom surface centre point, called after fitting process centre point, be stored as STL form;
6) centre point obtained based on above two method is pairing registration marks point, with the multiple reference points system alignment command of three-dimensional reverse engineering software, upper lower jaw mathematical model is registered against contact method centre point;
7) three-dimensional reconstruction of upper and lower edentulous jaw model 3 d scan data centric relation position so far, is completed.
2. the edentulous jaw model centric relation position three-dimensional rebuilding method of a kind of multiple reference points system according to claim 1 alignment, it is characterised in that: the basal diameter of described locating dowel is 6mm, and height is 5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410730316.6A CN105653753A (en) | 2014-12-04 | 2014-12-04 | Multi-reference point system aligned edentulous jaw model centric relation position three-dimensional reconstruction method |
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| CN201410730316.6A CN105653753A (en) | 2014-12-04 | 2014-12-04 | Multi-reference point system aligned edentulous jaw model centric relation position three-dimensional reconstruction method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000322599A (en) * | 1999-05-14 | 2000-11-24 | Meidensha Corp | Manufacture of three-dimensional model |
| CN101393653A (en) * | 2008-10-16 | 2009-03-25 | 浙江大学 | Method for reconstructing three dimensional model of complete teeth through CT data of dentognathic gypsum model and dentognathic panoramic perspective view |
-
2014
- 2014-12-04 CN CN201410730316.6A patent/CN105653753A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000322599A (en) * | 1999-05-14 | 2000-11-24 | Meidensha Corp | Manufacture of three-dimensional model |
| CN101393653A (en) * | 2008-10-16 | 2009-03-25 | 浙江大学 | Method for reconstructing three dimensional model of complete teeth through CT data of dentognathic gypsum model and dentognathic panoramic perspective view |
Non-Patent Citations (2)
| Title |
|---|
| 孙玉春等: ""无牙颌模型正中关系位三维重建精度的定量评价"", 《中华口腔医学杂志》 * |
| 赵一姣等: ""一种基于数字化牙颌模型的三维咬合分析方法"", 《北京大学学报》 * |
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Application publication date: 20160608 |