CN100584288C - A kind of tooth cap processing method - Google Patents
A kind of tooth cap processing method Download PDFInfo
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- CN100584288C CN100584288C CN200810066623A CN200810066623A CN100584288C CN 100584288 C CN100584288 C CN 100584288C CN 200810066623 A CN200810066623 A CN 200810066623A CN 200810066623 A CN200810066623 A CN 200810066623A CN 100584288 C CN100584288 C CN 100584288C
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Abstract
The present invention relates to a kind of tooth cap processing method, process the dental model three-dimensional coordinate data on the workbench and send Control Computer to by scanning means scanning, Control Computer reads corresponding thread form template data; Generate principle according to the initial outer hat of scan-data and facing and generate the initial outer hat of facing, and the initial outer hat coordinate data of detecting facing and thread form template be preced with data outward and carry out the difference computing, obtain the facing correction and be preced with data outward; Be preced with data outward according to tooth mould scan-data and facing correction and carry out the facing three-dimensional modeling, obtain the facing model and carry out outward, set ray cast direction and brightness titled with the cutting automatically of outer material; The tooth mould of processing on the workbench scanned and carry out the difference computing with the facing model data, obtain the pointwise process data of facing, send the processing order to machining tool and carry out facing processing.The present invention can obtain the facing near the outer hat of natural profile of tooth, and facing is preced with outward and is revised conveniently; Hat closely cooperates with the tooth profile in the facing, has improved the dental treatment level.
Description
Technical field
The present invention relates to a kind of processing method, more particularly, relate to a kind of tooth cap processing method.
Background technology
In the infringement of tooth profile of tooth, because of the tooth profiles of tooth that odontopathy caused such as dental caries, dental caries infringements or the tooth profile of tooth infringement that causes because of physical cause are the most common.Profile of tooth to above-mentioned infringement is repaired, existing dentistry normally adopts patching material on the damaged location bonding of impaired profile of tooth, the method of polishing is then repaired, this method is big for impaired big profile of tooth patch work amount, and the thread form after repairing is preced with the technical merit that quality is decided by dentist individual fully outward, the outer crown shape of thread form is difficult to reach the outer crown shape of general thread form of people's tooth, and patient is not felt well behind dental repair.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of tooth cap processing method is provided, and the facing of the outer crown shape of general thread form of the corresponding tooth that hat coincide with the thread form of damaged tooth in can processing, outer hat reaches the people improves the dental treatment level.
The technical solution adopted for the present invention to solve the technical problems is: a kind of tooth cap processing method is provided, it is characterized in that: obtain and handle the facing process data by Control Computer with the scanning means that is connected with this Control Computer, described tooth cap processing method comprises the steps:
S 1, with the tooth mould be installed in processing workbench on, starting scanning means scans the tooth mould, and with scanning the tooth die topography to scanning basic point three-dimensional coordinate data send Control Computer to, the thread form template data corresponding in the Control Computer reading database with described tooth mould;
S2, Control Computer generate the initial outer hat of principle generation facing according to scan-data and the initial outer hat of facing, the initial outer hat coordinate data of the automatic pointwise detecting of Control Computer facing, and be preced with data of corresponding positions outward with the thread form template of calling and relatively obtain difference, when described difference when setting threshold values, this point coordinates is selected the respective coordinates of the outer hat of thread form template for use, when described difference when setting threshold values, this point coordinates is constant, obtains the facing correction after finishing and is preced with data outward;
S3, Control Computer are preced with data outward according to tooth mould scan-data and above-mentioned facing correction, adopt the three-dimensional imaging technology to carry out the facing three-dimensional modeling, the facing model of hat and outer hat in obtaining comprising, and hat is outer titled with outer material with interior hat intersection outside cutting automatically, sets ray cast direction and brightness then;
S4, the tooth mould that will process on the workbench replace with turned blank, scanning means scanning blank outer rim is to the three-dimensional coordinate of scanning basic point, carry out the difference computing with the interior hat and the outer hat data of above-mentioned facing model, obtain the pointwise process data of facing, order to machining tool transmission processing according to the pointwise process data of facing and carry out facing processing.
In tooth cap processing method of the present invention, described scanning basic point is the intersection point of described processing workbench workpiece installing hole axis and workpiece installed surface.
In tooth cap processing method of the present invention, the initial outer hat of described facing among the step S2 generates principle and is: hat to the thickness of interior hat is a setting value outside the facing top, to interior hat and the thickness linear variation of the outer hat of the sidepiece of outer hat boundary to interior hat, interior hat is zero with being preced with boundary thickness outward to facing from the top.
In tooth cap processing method of the present invention, the described difference computing among the step S4 is: the coordinate figure of the interior hat data of same plane upper shell model and outer hat data is poor with the coordinate figure of blank boundary point respectively.
In tooth cap processing method of the present invention, step S3 comprises manual modification facing local thickness, and the local edge zone curve of the outer hat of manual modification facing, and the manual modification operation is reversible.
In tooth cap processing method of the present invention, step S3 comprises that the facing model data that will generate adds the new thread form template data of formation among the data base.
In tooth cap processing method of the present invention, described tooth mould is single teeth mould.
In tooth cap processing method of the present invention, described tooth mould is the above tooth moulds of two teeth, and the thread form template packet among the described step S1 is drawn together corresponding facing model data and corresponding bridge data; After the facing model that is included in each tooth among the described step S3 generates and finishes, generate continuous adjacent two facings of bridge connection according to calling corresponding bridge data; Comprise scanning means scanning blank outer rim three-dimensional coordinate among the described step S4, carry out the difference computing with above-mentioned bridge data.
In tooth cap processing method of the present invention, step S4 comprises, shows that in real time processing progress and verification in real time send the integrity and the correctness of process data.
Implement tooth cap processing method of the present invention, compared with the prior art, its beneficial effect is:
1, this method can generate the facing of outer crown grafting person of modern times's the outer hat of natural profile of tooth by scanning tooth modulus certificate and thread form template data, has improved the dental treatment level greatly;
2, after the facing model generated, the outer hat of facing can carry out manual modification, and the outer hat of facing is met the demands more;
3, be preced with in the facing by scanning the tooth modulus, can guarantee closely cooperating of interior hat of facing and tooth profile according to processing.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the flow chart of tooth cap processing method embodiment one of the present invention.
Fig. 2 is the difference principle of operation figure in the tooth cap processing method of the present invention.
The specific embodiment
Embodiment one
Tooth cap processing method of the present invention is to obtain and handle the facing process data by the Control Computer of system of processing with the scanning means that is connected with this Control Computer, and uses facing process data control facing machining tool to carry out facing processing.
As shown in Figure 1, tooth cap processing method of the present invention comprises the steps:
Step 1, the tooth mould (being made according to patient's cacodontia by odontologist) of needs being prepared facing is installed on the machine tooling workbench, starting scanning means scans the tooth mould, and the three-dimensional coordinate data of scanning basic point is sent the tooth die topography of scanning to Control Computer, the thread form template data corresponding with the tooth mould in the Control Computer reading database.The scanning basic point is the reference point of scanning means, scanning means is that initial point is set up coordinate system with the scanning basic point, in theory, arbitrary definite point that the scanning basic point can add installed surface break with the processing workbench is a basic point, and the intersection point of getting processing workbench workpiece installing hole axis and workpiece installed surface usually is as basic point.
In the present embodiment, scanning means is to the scanning of tooth mould, be to determine a basic point earlier, and be that benchmark is lined by line scan to the tooth mould and obtained tooth die topography three-dimensional coordinate data with this basic point then.In other embodiments, scanning means can adopt existing scanning technique, to improve scan efficiency.Scanning means can adopt laser scanner or other scanner commonly used.Thread form template data among the data base can adopt the normal tooth to the people to scan and set up.
Step 2, Control Computer generates the initial outer hat of principle generation facing according to the scan-data and the initial outer hat of facing of tooth mould, the initial outer hat coordinate data of the automatic pointwise detecting of Control Computer facing, and be preced with data of corresponding positions outward with the thread form template of calling and relatively obtain difference, when difference when setting threshold values, the respective coordinates of selecting the outer hat of thread form template for use is as this point coordinates, when difference when setting threshold values, this point coordinates is constant, and pointwise is finished the correction that obtains facing after the difference computing and is preced with data outward.In the present embodiment, the initial outer hat of facing generates principle and is: hat is a setting value to the thickness of interior hat at facing the top outside, and to interior hat and the thickness linear variation of the outer hat of the sidepiece of outer hat boundary to interior hat, interior hat is zero with being preced with boundary thickness outward to facing from the top.In other embodiments, hat to the thickness of interior hat can be set two or more one-tenth-value thickness 1/10s by subregion outside the facing top.The effect of the outer hat of the outer nearly thread form template of crown grafting of the correction that guarantees facing is played in the setting of above-mentioned threshold values, and threshold values is more little, and the outer hat of the correction of facing is preced with outward near the thread form template more, and this threshold values obtains empirical data by the operator in conjunction with the processing experience in the actual processing.
Step 3, Control Computer is preced with data outward according to tooth mould scan-data and above-mentioned facing correction, adopt existing three-dimensional imaging technology to carry out the three-dimensional modeling of facing, the facing model of hat and outer hat in obtaining comprising, automatically it is outer titled with outer material with interior hat intersection to cut outer hat, and set ray cast direction and brightness, obtain visual facing threedimensional model.The operator can manual modification facing model local thickness, and the local edge zone curve of the outer hat of manual modification facing, and the manual modification operation is reversible, with convenient revise incorrect or revise can return to arbitrary correct operation place that last time or operator assert when wrong easily, carry out manual modification again.In this step, the facing model data that generates can be added the new thread form template data of formation among the data base.
Step 4, after the facing model generates and finishes, tooth mould on the processing workbench is replaced with turned blank, scanning means is the three-dimensional coordinate of basic point scanning blank outer rim with the same one scan basic point with the scanning of tooth mould, carry out the difference computing with the interior hat and the outer hat data of above-mentioned facing model, obtain the pointwise process data of facing, order to machining tool transmission processing according to the pointwise process data of facing and carry out facing processing.The difference computing is: on same section plane, the coordinate figure of the interior hat data of facing model and outer hat data is poor with the coordinate figure of blank boundary point respectively.As shown in Figure 2, as on the section plane that is parallel to the xoy coordinate surface, the interior hat edge 13 coordinate figure X of facing model
aCoordinate figure X with the respective point (promptly with the identical boundary point of interior hat edge Y coordinate) on the border 11 of turned blank 1
bDifference Δ Xn be the process data of directions X.And the interior hat edge 13 coordinate figure X of facing model
aCoordinate figure X with the respective point of edge of materials 12 possible in the course of processing
cDifference Δ Xn ' be used for real-time verification to the process data correctness.The integrity of transmission data is finished by existing exclusive or check technology.
Certainly, in step 4, than under the reliable premise, also can not carry out the integrity of process data and the real-time verification of correctness at process data transmission and control ratio.
Embodiment two
Present embodiment and embodiment one are basic identical, and difference is: in the present embodiment step 3, and setting operation person manual modification facing model not.Be that Control Computer is preced with data outward according to tooth mould scan-data and facing correction, adopt existing three-dimensional imaging technology to carry out the facing three-dimensional modeling, after obtaining comprising the facing model of interior hat and outer hat, promptly enter step 4 and finish the process data generation.
In the above-described embodiments, the tooth mould can be single teeth mould, also can be the above tooth moulds of two teeth.When the tooth mould is two tooth moulds more than the tooth, thread form template packet in the step 1 is drawn together corresponding facing model data and corresponding bridge data (comprise each the bridge data that is connected each position two adjacent teeth of human oral cavity respectively among the data base, the bridge data are set up by the mode of scanning bridge model); After the facing model that is included in each tooth in the step 3 generates and finishes, generate bridge, connect adjacent two facings according to calling corresponding bridge data; Comprise scanning means scanning blank outer rim three-dimensional coordinate in the step 4, carry out the difference computing, generate the bridge process data with the bridge data.
Claims (9)
1, a kind of tooth cap processing method is characterized in that: obtain and handle the facing process data by Control Computer with the scanning means that is connected with this Control Computer, described tooth cap processing method comprises the steps:
S1, with the tooth mould be installed in processing workbench on, starting scanning means scans the tooth mould, and with scanning the tooth die topography to scanning basic point three-dimensional coordinate data send Control Computer to, the thread form template data corresponding in the Control Computer reading database with described tooth mould;
S2, Control Computer generate the initial outer hat of principle generation facing according to scan-data and the initial outer hat of facing, the initial outer hat coordinate data of the automatic pointwise detecting of Control Computer facing, and be preced with data of corresponding positions outward with the thread form template of calling and relatively obtain difference, when described difference when setting threshold values, this point coordinates is selected the respective coordinates of the outer hat of thread form template for use, when described difference when setting threshold values, this point coordinates is constant, obtains the facing correction after finishing and is preced with data outward;
S3, Control Computer are preced with data outward according to tooth mould scan-data and above-mentioned facing correction, adopt the three-dimensional imaging technology to carry out the facing three-dimensional modeling, the facing model of hat and outer hat in obtaining comprising, and hat is outer titled with outer material with interior hat intersection outside cutting automatically, sets ray cast direction and brightness then;
S4, the tooth mould that will process on the workbench replace with turned blank, scanning means scanning blank outer rim is to the three-dimensional coordinate of scanning basic point, carry out the difference computing with the interior hat and the outer hat data of above-mentioned facing model, obtain the pointwise process data of facing, order to machining tool transmission processing according to the pointwise process data of facing and carry out facing processing.
2, tooth cap processing method as claimed in claim 1 is characterized in that: described scanning basic point is the intersection point of described processing workbench workpiece installing hole axis and workpiece installed surface.
3, tooth cap processing method as claimed in claim 1, it is characterized in that, the initial outer hat of described facing among the step S2 generates principle and is: hat to the thickness of interior hat is a setting value outside the facing top, to interior hat and the thickness linear variation of the outer hat of the sidepiece of outer hat boundary to interior hat, interior hat is zero with being preced with boundary thickness outward to facing from the top.
4, tooth cap processing method as claimed in claim 1 is characterized in that, the described difference computing among the step S4 is: the coordinate figure of the interior hat data of same plane upper shell model and outer hat data is poor with the coordinate figure of blank boundary point respectively.
5, as the described tooth cap processing method of one of claim 1 to 4, it is characterized in that: in step S3, comprise manual modification facing local thickness, and the local edge zone curve of the outer hat of manual modification facing, the manual modification operation is reversible.
6, tooth cap processing method as claimed in claim 5 is characterized in that: in step S3, comprise that the facing model data that will generate adds the new thread form template data of formation among the data base.
7, tooth cap processing method as claimed in claim 5 is characterized in that: described tooth mould is single teeth mould.
8, tooth cap processing method as claimed in claim 5 is characterized in that: described tooth mould is the above tooth moulds of two teeth, and the thread form template packet among the described step S1 is drawn together corresponding facing model data and corresponding bridge data; After the facing model that is included in each tooth among the described step S3 generates and finishes, generate continuous adjacent two facings of bridge connection according to calling corresponding bridge data; Comprise scanning means scanning blank outer rim three-dimensional coordinate among the described step S4, carry out the difference computing with above-mentioned bridge data.
9, tooth cap processing method as claimed in claim 5 is characterized in that: step S4 comprises, shows that in real time processing progress and verification in real time send the integrity and the correctness of process data.
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| CN200810066623A CN100584288C (en) | 2008-04-09 | 2008-04-09 | A kind of tooth cap processing method |
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| CN200810066623A CN100584288C (en) | 2008-04-09 | 2008-04-09 | A kind of tooth cap processing method |
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| CN101259038A CN101259038A (en) | 2008-09-10 |
| CN100584288C true CN100584288C (en) | 2010-01-27 |
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| CN104293985B (en) * | 2014-09-30 | 2016-01-20 | 广东瑞洲科技有限公司 | A kind of corrective system of leather cutting machine and bearing calibration thereof |
| CN107874854B (en) * | 2016-11-21 | 2019-03-12 | 宁波频泰光电科技有限公司 | A kind of method, calculating equipment and the numerically-controlled machine tool system of processing artificial tooth |
| CN110547888B (en) * | 2018-05-30 | 2021-07-27 | 肖圣钊 | Method for designing and manufacturing dental sleeve type cleaning tool based on biomechanics principle |
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Owner name: SHENZHEN ROYAL DENTAL LAB, INC. Free format text: FORMER OWNER: JIANG SISI Effective date: 20110930 |
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Effective date of registration: 20110930 Address after: Five, building two, building four, No. 518000 west of Bantian snow Tech Park, Longgang District, Shenzhen, Guangdong Patentee after: Shenzhen Royal Dental Lab, Inc. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Taoyuan Road, Nanshan talent building Patentee before: Jiang Sisi |