CN104000668B - 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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- CN104000668B CN104000668B CN201410223128.4A CN201410223128A CN104000668B CN 104000668 B CN104000668 B CN 104000668B CN 201410223128 A CN201410223128 A CN 201410223128A CN 104000668 B CN104000668 B CN 104000668B
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- rpd
- metal rack
- plaster model
- model
- metal support
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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, it is suitable that more particularly, to a kind of removable partial denture casts metal rack
The method for quantitatively evaluating of property.
Background technology
The conventionally employed model casting of metal rack of removable partial denture (removable partial denture, rpd)
Method make, its fitness be evaluate its make precision an important indicator.But because the structure of rpd metal rack is multiple
Miscellaneous, in place all have gap afterwards and between oral cavity tissue on three dimensions, is therefore a difficulty to the quantitative assessment of its fitness
Topic.
Have following several currently used for the method evaluating removable partial denture casting metal rack fitness:
1. method in place: by the rpd completing casting metal rack be located on plaster model, then respectively to snap ring,
The main portions such as occlusal lug, connector are artificially observed, and then carry out subjective assessment to its fitness.Some subtle flow
It is difficult to discover.
2. the microscope direct method of measurement: the rpd completing casting metal rack is located on plaster model, in measurement
Under microscope, the gap between support and model is measured, and then evaluate its fitness.
3. incision: the rpd completing casting metal rack is located on plaster model, then again by metal rack
Laterally cut at same position with model, under the microscope gap between the two is measured, and then evaluate its fitness.
There are a lot of drawbacks in traditional evaluation methodology.
1. method in place is subjective estimate method, lacks valid data and supports it is impossible to quantitative assessment, not objective.
2. microscope direct observing method can only be evaluated to the fitness of support local, not comprehensively.
3. incision needs damage model and support, is likely to result in the breakage of model and support during cutting
Deformation, the accuracy of impact measurement, and local can only be measured, not comprehensively.
Content of the invention
The present invention provides a kind of method for quantitatively evaluating of removable partial denture casting metal rack fitness it is intended to solve to pass
The problem that system evaluation methodology exists.
The present invention is achieved in that a kind of removable partial denture casts the method for quantitatively evaluating of metal rack fitness,
Described method for quantitatively evaluating comprises the following steps:
A, making standard partially edentulous cast；
B, on standard defect of dentition plaster model make rpd casting metal rack；
C, using replica make the plaster model containing rpd metal rack tissue surface form；
The fitness of the rpd metal rack that d, Application Optics scanning three-dimensional measurement method evaluation make.
The further technical scheme of the present invention is: described step c comprises the following steps:
C1, the rpd completing metal rack is worn into archetype and edge sealing wax；
C2, the archetype after edge sealing wax is loaded multiple diaphragm capsule and irrigates silicone rubber impression material；
The die after rpd metal rack wears plaster model is obtained after c3, silicone rubber solidification；
C4, by rpd metal rack reset in institute's impression taking irrigate super hard gypsum modeling material；
Obtain being replicated with the plaster model of rpd metal rack tissue surface after c5, super hard gypsum solidification.
The further technical scheme of the present invention is: described step d comprises the following steps:
D1, Application Optics scanner are scanned to archetype and duplicating model respectively, obtain both three-dimensional datas；
D2, application reverse check software are compared to both three-dimensional datas and are obtained 3d comparative result figure；
D3, by analyze 3d comparative result figure comprehensive objective appraisal is carried out to the fitness of rpd metal rack.
The further technical scheme of the present invention is: described reverse check software uses geomagic qualify12.0
Software is compared to model data.
The further technical scheme of the present invention is: described optical scanning adopts contactless white light scanning.
The further technical scheme of the present invention is: described optical scanning adopts resolution 1,300,000 pixel, sweep limitss
100mm × 100mm × 75mm, sampled point are away from 0.3mm.
The further technical scheme of the present invention is: the data form that described optical scanning completes to obtain is stl form.
The further technical scheme of the present invention is: described geomagic qualify12.0 software is carried out in model contrast
Matching alignment simultaneously overlaps under same coordinate position, maximum and the minimum critical value parameter of ratio error are respectively+0.5mm and-
0.5mm.
The further technical scheme of the present invention is: described geomagic qualify12.0 software is carried out in model contrast
Matching alignment simultaneously overlaps under same coordinate position, maximum and the minimum name value parameter of ratio error are respectively+0.1mm and-
0.1mm.
The invention has the beneficial effects as follows: adopt quantitative analyses, preliminary preparation is simple to operate；Testing result is with numerical value shape
Formula embodies, objective reliability；Accuracy of detection is high, and the subtle flow of rpd metal rack also can detect；By to 3d comparative result figure
Observe, the poor position of its fitness can be rapidly found out, contribute to follow-up Error analysis of machining, and then processing technique is carried out
Optimize.
Brief description
Fig. 1 is the method for quantitatively evaluating that removable partial denture provided in an embodiment of the present invention casts metal rack fitness
Flow chart.
Specific embodiment
Need material and facility as follows in the method, upper jaw standard defect of dentition die one is (for making original stone
Cream model), super hard gypsum powder, multiple mould silicone rubber, base plate wax, optical scanner and geomagic qualify12.0 software.
Fig. 1 shows that the removable partial denture that the present invention provides casts the stream of the method for quantitatively evaluating of metal rack fitness
Cheng Tu, details are as follows for it:
In step s1, the defect of dentition of application super hard gypsum powder and standard defect of dentition print making standard in this step
Plaster model (original plaster model).
The rpd casting of removable partial denture, in step s2, is made in this step on standard defect of dentition plaster model
Metal rack；Apply traditional technique during making, make the wax pattern of metal rack, the wax pattern made is wrapped
Bury, cast, sanding and polishing, so far complete rpd casting metal rack make.
In step s3, in this step the metal rack completing is located in standard defect of dentition plaster model, and
And bracket edge is carried out sealing wax encapsulation process.
In step s4, rpd metal rack and the standard defect of dentition Gypsum Fibrosum of sealing wax encapsulation process will be carried out in this step
Model is put in multiple diaphragm capsule, vacuum is adjusted the silastic material perfusion mixed enter in multiple diaphragm capsule, when irrigating silicone rubber, multiple mould
Box is constantly in concussion state, so silastic material can be uniformly dispersed in multiple diaphragm capsule, will not in multiple diaphragm capsule
There is bubble.
In step s5, in this step after the silastic material solidification in the multiple diaphragm capsule having irrigated, standard denture is lacked
Damage plaster model to take out, obtain the silicone rubber impression after metal rack wears original plaster model.
In step s6, in this step rpd metal rack is taken off from original plaster model, by metal rack reset in
In institute's impression taking, the super hard gypsum material mixed is adjusted in perfusion in die, perfusion super hard gypsum material is slow while earthquake
Slow carrying out, and super hard gypsum material is adjusted under vacuum and is mixed.
In step s7, obtain in this step being replicated with prd metal rack tissue surface after super hard gypsum material solidification
Super hard gypsum model.
In step s8, to original plaster model, (i.e. model a) is superhard with replicate respectively to utilize scanner in this step
(i.e. model b) is scanned plaster model, respectively obtains both stl formatted datas after the completion of scanning.Wherein to two models
Scanning is to complete on same workbench, and scanning theory is contactless white light scanning, and wherein parameter is: camera resolution
For 1,300,000 pixels, sweep limitss 100mm × 100mm × 75mm, adopt point away from 0.3mm.
In step s9, in this step two groups of data that the scanning of model a and model b obtains are imported geomagic
Qualify12.0 software, using the data setting of model a as reference side, the data setting of model b, as test side, adopts
Both coincidences under same coordinate position of the best fit alignment of geomagic qualify12.0 software, by the maximum of its error
Be respectively defined as+0.5mm and -0.5mm with lowest critical value, maximum and minimum nominal value be respectively defined as+0.1mm and -
0.1mm.Application geomagic qualify12.0 software is compared analysis to the data of two group models and obtains 3d comparative result
Figure.
Step s10, passes through in this step to analyze 3d comparative result figure, first this removable partial denture rpd metal is propped up
The overall fitness of frame carries out quantitative assessment, counts the overall amount of deflection type of gained, as shown in Table 1；Compare forming 3d
In result figure, the part of generation deviation is brought with different colors and is represented, illustrates and is shown in Table 2.By observing 3d comparative result
Figure, can measure the gap numerical value model between this position and plaster model according to the color that rpd metal rack different parts are presented
Enclose, realize the quantitative assessment to its local fitness.
Application " replica " and " 3-D scanning method " achieves to be determined to removable partial denture casting metal rack fitness
Amount analysis, has the effect that 1. " replicas " cleverly by rpd framework face form using this method, by multiple mould
Mode has transferred to the surface of plaster model, simple to operate, has established good basis for " 3-D scanning method ".2, Application Optics are swept
Retouch instrument using discontiguous mode, original plaster model to be scanned with the plaster model replicating, and then obtain both numbers
According to.Neither damage model, it also avoid the later stage deformation of support.3. apply reverse check software can achieve primary model data with
The comparison of duplicating model data, whole process is automatic, quick, objective.The 3d comparative result figure being formed is shown with different colours band
3d deviation situation between support different parts tissue surface and archetype tissue surface, is conducive to complete observation to be suitable for evaluating it
Property.
The deviation statistics situation of table 1 model b and model a
Table 23d comparative result figure explanation
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of removable partial denture casts the method for quantitatively evaluating of metal rack fitness it is characterised in that described quantitation is commented
Valency method comprises the following steps:
A, making standard defect of dentition plaster model；
B, on standard defect of dentition plaster model make rpd casting metal rack；
C, using replica make the plaster model containing rpd metal rack tissue surface form；
The fitness of the rpd metal rack that d, Application Optics scanning three-dimensional measurement method evaluation make；
Described step c comprises the following steps:
C1, the rpd completing metal rack is worn into standard defect of dentition plaster model and edge sealing wax；
C2, the standard defect of dentition plaster model after edge sealing wax is loaded multiple diaphragm capsule and irrigates silicone rubber impression material；
The die after rpd metal rack wears standard defect of dentition plaster model is obtained after c3, silicone rubber solidification；
C4, by rpd metal rack reset in institute's impression taking irrigate super hard gypsum modeling material；
Obtain being replicated with the plaster model of rpd metal rack tissue surface after c5, super hard gypsum solidification;
Described step d comprises the following steps:
D1, Application Optics scanner are carried out with the plaster model that obtained using replica to standard defect of dentition plaster model respectively
Scanning obtains both three-dimensional datas；
D2, application reverse check software are compared to both three-dimensional datas and are obtained 3d comparative result figure；
D3, by analyze 3d comparative result figure comprehensive objective appraisal is carried out to the fitness of rpd metal rack.
2. method for quantitatively evaluating according to claim 1 is it is characterised in that described reverse check software uses
Geomagic qualify 12.0 software is compared to model data.
3. method for quantitatively evaluating according to claim 2 is it is characterised in that described optical scanning adopts contactless white light
Scanning.
4. method for quantitatively evaluating according to claim 3 is it is characterised in that described optical scanning adopts resolution 1,300,000
Pixel, sweep limitss 100mm × 100mm × 75mm, sampled point are away from 0.3mm.
5. method for quantitatively evaluating according to claim 4 is it is characterised in that described optical scanning completes the data lattice obtaining
Formula is stl form.
6. method for quantitatively evaluating according to claim 2 is it is characterised in that described geomagic qualify 12.0 is soft
Part is fitted aliging and coincidence under same coordinate position, the maximum to ratio error and lowest critical value in model contrast
Parameter is respectively+0.5mm and -0.5mm.
7. method for quantitatively evaluating according to claim 2 is it is characterised in that described geomagic qualify 12.0 is soft
Part is fitted alignment in model contrast and overlaps under same coordinate position, maximum and the minimum nominal value to ratio error
Parameter is respectively+0.1mm 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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| CN104000668B true CN104000668B (en) | 2017-02-01 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
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 |
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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激光快速成型技术制作全口义齿钛基托的适合性研究.《实用口腔医学杂志》.2011,第27卷(第3期),294-295. * |
| 吴江，赵湘辉，沈丽娟，高阳，高勃.激光扫描测量全口义齿钛基托适合性的可行性研究.《临床口腔医学杂志》.2009,第25卷(第6期),343-344. * |
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