CN104000668A - Quantitative evaluation method of compatibility of removable partial denture cast metal support - Google Patents
Quantitative evaluation method of compatibility of removable partial denture cast metal support Download PDFInfo
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- CN104000668A CN104000668A CN201410223128.4A CN201410223128A CN104000668A CN 104000668 A CN104000668 A CN 104000668A CN 201410223128 A CN201410223128 A CN 201410223128A CN 104000668 A CN104000668 A CN 104000668A
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- quantitatively evaluating
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Abstract
The invention is suitable for the field of analyzing compatibility of false teeth and provides a quantitative evaluation method of compatibility of a removable partial denture cast metal support. The method comprises the following steps: A, preparing a standard dentition defect plaster model; B, preparing an RPD cast metal support on the standard dentition defect plaster model; C, preparing a plaster model containing RPD metal support tissue surface shape by a complex method; D, evaluating the compatibility of the RPD metal support by applying an optical scanning three-dimensional measurement method. By adopting quantitative analysis, the first-phase preparation is simple to operate, the detection result reflected by numerical values is objective and reliable, the detection precision is high, and the fine deformation of the RPD metal support can be further detected. By observing a 3D comparative result graph, the part with poor compatibility can be quickly found to facilitate subsequent processing error analysis, so that the processing process is optimized.
Description
Technical field
The invention belongs to artificial tooth fitness analysis field, relate in particular to the method for quantitatively evaluating of a kind of removable partial denture cast metal support fitness.
Background technology
The metal rack tradition of removable partial denture (Removable Partial Denture, RPD) adopts the method for model casting to make, and its fitness is to evaluate the important indicator that it makes precision.But due to the complex structure of RPD metal rack, in place after and between oral cavity tissue, on three dimensions, all there is gap, therefore to the quantitative assessment of its fitness, be a difficult problem.
At present for evaluating the method for removable partial denture cast metal support fitness, have following several:
1. method in place: the RPD cast metal support completing is located on plaster model, then respectively the main position such as snap ring, occlusal lug, connector is artificially observed, and then its fitness is carried out to subjective assessment.Some trickle distortion are difficult for discovering.
2. the microscope direct method of measurement: the RPD cast metal support completing is located on plaster model, under measuring microscope, the gap between support and model is measured, and then evaluate its fitness.
3. incision: the RPD cast metal support completing is located on plaster model, and then by metal rack and model in same position lateral dissection, under the microscope gap is between the two measured, and then is evaluated its fitness.
There are a lot of drawbacks in tradition evaluation methodology.
1. method in place is subjective estimate method, lacks valid data support, cannot quantitative assessment, and not objective.
2. microscope direct observing method can only be evaluated the fitness of support part, comprehensive not.
3. incision needs damage model and support, in the process of cutting, may cause the breakage of model and the distortion of support, the accuracy that impact is measured, and can only measure part, comprehensive not.
Summary of the invention
The invention provides the method for quantitatively evaluating of a kind of removable partial denture cast metal support fitness, be intended to solve the problem that traditional evaluation methodology exists.
The present invention is achieved in that the method for quantitatively evaluating of a kind of removable partial denture cast metal support fitness, and described method for quantitatively evaluating comprises the following steps:
A, production standard defect of dentition model;
B, on standard defect of dentition plaster model, make RPD cast metal support;
C, the plaster model that utilizes replica making to contain RPD metal rack tissue surface form;
The fitness of the RPD metal rack that D, the evaluation of Application Optics scanning three-dimensional measurement method are made.
Further technical scheme of the present invention is: described step C comprises the following steps:
C1, the RPD metal rack completing is worn into archetype edge sealing wax;
C2, by the archetype after edge sealing wax pack into multiple diaphragm capsule and perfusion silicone rubber impression material;
After C3, silicone rubber solidify, obtain RPD metal rack and wear the die after plaster model;
C4, RPD metal rack is resetted and pour into super hard gypsum modeling material in institute's impression taking;
After solidifying, C5, super hard gypsum obtain copying the plaster model of RPD metal rack tissue surface.
Further technical scheme of the present invention is: described step D comprises the following steps:
D1, Application Optics scanner scan archetype and duplicating model respectively, obtain both three-dimensional datas;
D2, apply reverse check software both three-dimensional datas are compared and obtained 3D comparative result figure;
D3, by analyzing 3D comparative result figure, the fitness of RPD metal rack is carried out to comprehensive objective appraisal.
Further technical scheme of the present invention is: what described reverse check software adopted is that Geomagic Qualify12.0 software compares model data.
Further technical scheme of the present invention is: described optical scanning adopts contactless white light scanning.
Further technical scheme of the present invention is: described optical scanning adopts resolution 1,300,000 pixels, sweep limits 100mm * 100mm * 75mm, sampled point apart from 0.3mm.
Further technical scheme of the present invention is: it is STL form that described optical scanning completes the data format obtaining.
Further technical scheme of the present invention is: described Geomagic Qualify12.0 software carries out matching alignment and overlaps under same coordinate position in model contrast, the maximum of compare error and be respectively+0.5mm of minimum critical value parameter and-0.5mm.
Further technical scheme of the present invention is: described Geomagic Qualify12.0 software carries out matching alignment and overlaps under same coordinate position in model contrast, the maximum of compare error and minimum be respectively+0.1mm of nominal value parameter and-0.1mm.
The invention has the beneficial effects as follows: adopt quantitative analysis, preliminary preparation is simple to operate; Testing result embodies with numerical value form, objective reliable; Accuracy of detection is high, and the trickle distortion of RPD metal rack also can detect; By the observation to 3D comparative result figure, can find out fast the poor position of its fitness, contribute to follow-up Error analysis of machining, and then processing technique is optimized.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for quantitatively evaluating of the removable partial denture cast metal support fitness that provides of the embodiment of the present invention.
The specific embodiment
Need in the method material and facility as follows, upper jaw standard defect of dentition die (for making original plaster model), a super hard gypsum powder, multiple silicone rubber, base plate wax, optical scanner and Geomagic Qualify12.0 software for mould.
Fig. 1 shows the flow chart of the method for quantitatively evaluating of removable partial denture provided by the invention cast metal support fitness, and details are as follows for it:
In step S1, apply in this step the defect of dentition plaster model (original plaster model) of super hard gypsum powder and standard defect of dentition print making standard.
In step S2, on standard defect of dentition plaster model, make in this step the RPD cast metal support of removable partial denture; In the process of making, apply traditional technique, make the wax pattern of metal rack, the wax pattern of making is carried out to embedding, casting, sanding and polishing, so far completed RPD cast metal rack making.
In step S3, in this step the metal rack completing is located in to standard defect of dentition plaster model, and bracket edge is carried out to sealing wax encapsulation process.
In step S4, in this step the RPD metal rack and the standard defect of dentition plaster model that carry out sealing wax encapsulation process are put into multiple diaphragm capsule, adjust the silastic material perfusion of mixing to enter in multiple diaphragm capsule vacuum, when perfusion silicone rubber, multiple diaphragm capsule is always in concussion state, silastic material can be dispersed in multiple diaphragm capsule uniformly like this, in multiple diaphragm capsule, can not have bubble.
In step S5, after the silastic material in the multiple diaphragm capsule having poured into solidifies, standard defect of dentition plaster model is taken out in this step, obtain metal rack and wear the silicone rubber impression after original plaster model.
In step S6, in this step RPD metal rack is taken off from original plaster model, metal rack is resetted in institute's impression taking, perfusion in die is adjusted to the super hard gypsum material of mixing, perfusion super hard gypsum material carries out when being earthquake slowly, and super hard gypsum material is lowered and mixed at vacuum condition.
In step S7, after super hard gypsum material solidification, obtain copying in this step the super hard gypsum model of PRD metal rack tissue surface.
In step S8, utilize in this step scanner respectively original plaster model (being model A) and the super hard gypsum model (being Model B) copying to be scanned, scanned the rear STL formatted data that obtains respectively both.To two model scannings, be wherein to complete on same workbench, and scanning theory is contactless white light scanning, wherein parameter is: camera resolution is 1,300,000 pixels, sweep limits 100mm * 100mm * 75mm, adopts point apart from 0.3mm.
In step S9, two groups of data importing Geomagic Qualify12.0 softwares that in this step scanning of model A and Model B obtained, using the data setting of model A as reference side, the data setting of Model B is as test side, the best fit of employing Geomagic Qualify12.0 software aligns, and both overlap under same coordinate position, by be defined as respectively+0.5mm of the maximum of its error and lowest critical value and-0.5mm, maximum and minimum be defined as respectively+0.1mm of nominal value and-0.1mm.Application Geomagic Qualify12.0 software compares to analyze to the data of two group models and obtains 3D comparative result figure.
Step S10, by analyzing 3D comparative result figure, first carries out quantitative assessment to the whole fitness of this removable partial denture RPD metal rack in this step, the whole amount of deflection type of statistics gained, as shown in Table 1; The part that produces deviation in forming 3D comparative result figure is brought and is represented by different colors, illustrates in Table 2.By observing 3D comparative result figure, the color that can present according to RPD metal rack different parts is measured the gap numerical range between this position and plaster model, realizes the quantitative assessment to its local fitness.
Application " replica " and " 3-D scanning method " has realized the quantitative analysis to the support fitness of removable partial denture cast metal, adopt this method to there is following effect: 1. " replica " JiangRPD framework face form cleverly, by the mode of multiple mould, transferred to the surface of plaster model, simple to operate, for " 3-D scanning method " established good basis.2, Application Optics scanner adopts discontiguous mode to scan original plaster model and the plaster model copying, and then obtains both data.Neither damage model, has also avoided the later stage distortion of support.3. the reverse check software of application can be realized comparing of archetype data and duplicating model data, and whole process is automatic, quick, objective.The 3D comparative result figure forming shows the 3D deviation situation between support different parts tissue surface and archetype tissue surface with different colours band, is conducive to complete observation and evaluates its fitness.
The deviation statistics situation of table 1 Model B and model A
Table 23D comparative result figure explanation
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a method for quantitatively evaluating for removable partial denture cast metal support fitness, is characterized in that, described method for quantitatively evaluating comprises the following steps:
A, production standard defect of dentition model;
B, on standard defect of dentition plaster model, make RPD cast metal support;
C, the plaster model that utilizes replica making to contain RPD metal rack tissue surface form;
The fitness of the RPD metal rack that D, the evaluation of Application Optics scanning three-dimensional measurement method are made.
2. method for quantitatively evaluating according to claim 1, is characterized in that, described step C comprises the following steps:
C1, the RPD metal rack completing is worn into archetype edge sealing wax;
C2, by the archetype after edge sealing wax pack into multiple diaphragm capsule and perfusion silicone rubber impression material;
After C3, silicone rubber solidify, obtain RPD metal rack and wear the die after plaster model;
C4, RPD metal rack is resetted and pour into super hard gypsum modeling material in institute's impression taking;
After solidifying, C5, super hard gypsum obtain copying the plaster model of RPD metal rack tissue surface.
3. method for quantitatively evaluating according to claim 2, is characterized in that, described step D comprises the following steps:
D1, Application Optics scanner scan and obtain both three-dimensional datas archetype and duplicating model respectively;
D2, apply reverse check software both three-dimensional datas are compared and obtained 3D comparative result figure;
D3, by analyzing 3D comparative result figure, the fitness of RPD metal rack is carried out to comprehensive objective appraisal.
4. method for quantitatively evaluating according to claim 3, is characterized in that, what described reverse check software adopted is that Geomagic Qualify 12.0 softwares compare model data.
5. method for quantitatively evaluating according to claim 4, is characterized in that, described optical scanning adopts contactless white light scanning.
6. method for quantitatively evaluating according to claim 5, is characterized in that, described optical scanning adopts resolution 1,300,000 pixels, sweep limits 100mm * 100mm * 75mm, sampled point apart from 0.3mm.
7. method for quantitatively evaluating according to claim 6, is characterized in that, it is STL form that described optical scanning completes the data format obtaining.
8. method for quantitatively evaluating according to claim 4, it is characterized in that, described Geomagic Qualify 12.0 softwares carry out matching alignment and overlap under same coordinate position in model contrast, the maximum of compare error and be respectively+0.5mm of minimum critical value parameter and-0.5mm.
9. method for quantitatively evaluating according to claim 4, it is characterized in that, described Geomagic Qualify 12.0 softwares carry out matching alignment and overlap under same coordinate position in model contrast, the maximum of compare error and minimum be respectively+0.1mm of nominal value parameter and-0.1mm.
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| CN201410223128.4A CN104000668B (en) | 2014-05-23 | 2014-05-23 | Quantitative evaluation method of compatibility of removable partial denture cast metal support |
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| CN201410223128.4A CN104000668B (en) | 2014-05-23 | 2014-05-23 | Quantitative evaluation method of compatibility of removable partial denture cast metal support |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180807A (en) * | 2015-08-28 | 2015-12-23 | 武汉大学 | Detection method for manufacturing precision of dental restoration support |
| CN106073919A (en) * | 2016-07-19 | 2016-11-09 | 华南理工大学 | A kind of adaptation method of digitized without mould for mouth mending material |
| CN109730791A (en) * | 2018-12-24 | 2019-05-10 | 东莞市爱嘉义齿有限公司 | The digitlization integral formation method of artificial tooth attachment |
| CN112857278A (en) * | 2021-01-11 | 2021-05-28 | 湖北崇新司法鉴定中心 | Method for measuring organ tissue defect |
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| JP2001017450A (en) * | 1999-07-07 | 2001-01-23 | Tokuyama Corp | Separating agent for dental prosthesis material fitting test |
| US7153135B1 (en) * | 1999-11-15 | 2006-12-26 | Thomas Richard J | Method for automatically creating a denture using laser altimetry to create a digital 3-D oral cavity model and using a digital internet connection to a rapid stereolithographic modeling machine |
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2014
- 2014-05-23 CN CN201410223128.4A patent/CN104000668B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001017450A (en) * | 1999-07-07 | 2001-01-23 | Tokuyama Corp | Separating agent for dental prosthesis material fitting test |
| US7153135B1 (en) * | 1999-11-15 | 2006-12-26 | Thomas Richard J | Method for automatically creating a denture using laser altimetry to create a digital 3-D oral cavity model and using a digital internet connection to a rapid stereolithographic modeling machine |
Non-Patent Citations (2)
| Title |
|---|
| 吴江，赵湘辉，沈丽娟，高勃: "应用激光扫描法测量全口义齿钛基托的适合性的方法", 《实用口腔医学杂志》, no. 3, 27 May 2011 (2011-05-27), pages 294 - 295 * |
| 吴江，赵湘辉，沈丽娟，高阳，高勃: "激光扫描全口义齿钛基托适合性的可行性研究", 《临床口腔医学杂志》, vol. 25, no. 6, 30 June 2009 (2009-06-30), pages 343 - 344 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180807A (en) * | 2015-08-28 | 2015-12-23 | 武汉大学 | Detection method for manufacturing precision of dental restoration support |
| CN105180807B (en) * | 2015-08-28 | 2018-05-29 | 武汉大学 | A kind of oral restoration body support frame makes the detection method of precision |
| CN106073919A (en) * | 2016-07-19 | 2016-11-09 | 华南理工大学 | A kind of adaptation method of digitized without mould for mouth mending material |
| CN106073919B (en) * | 2016-07-19 | 2021-05-14 | 华南理工大学 | Non-mold digital adaptation method for dental prosthesis |
| CN109730791A (en) * | 2018-12-24 | 2019-05-10 | 东莞市爱嘉义齿有限公司 | The digitlization integral formation method of artificial tooth attachment |
| CN112857278A (en) * | 2021-01-11 | 2021-05-28 | 湖北崇新司法鉴定中心 | Method for measuring organ tissue defect |
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