CN101239012A - Method for acquiring maxilla coloboma section model - Google Patents
Method for acquiring maxilla coloboma section model Download PDFInfo
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- CN101239012A CN101239012A CNA200810030669XA CN200810030669A CN101239012A CN 101239012 A CN101239012 A CN 101239012A CN A200810030669X A CNA200810030669X A CN A200810030669XA CN 200810030669 A CN200810030669 A CN 200810030669A CN 101239012 A CN101239012 A CN 101239012A
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- defective region
- impression material
- maxilla
- coloboma
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Abstract
The invention discloses a method for obtaining a model in the impairment area of upper jaw bone: adopting urografin liquid mixed with alginate to produce moulage material which is pressed from cheilion or suffering nasal cavity and fills the impairment area; scanning to obtain the data in impairment area by adopting helix CT; preparing the model in the impairment area of the upper jaw bone through three dimensional reconstruction and rapid molding. The invention resolves the problem of difficult delivery for sufferers who are confined to open mouth, with little pain for sufferers in delivery, completely obtaining the undercut parenchyma in the impairment area with high accuracy for the prepared model in the impairment area.
Description
Technical field
The present invention relates to the used model preparation of Oral Repair medical science.
Background technology
Upper jaw bone tumor and upper jaw bone severe trauma be defect of maxilla main diseases because of.Upper jaw bone excision back to the patient bring serious chew, dysfunction and serious facial deformity such as language, postoperative must carry out repairing and treating.Usually the defect of maxilla scope is wide and dark, and owing to postoperative lip, buccal soft tissue lack elasticity, scar tissue contracture, postoperation radiotherapy etc. cause patient's limitation of mouth opening or schistostoma to dwindle, and this has brought difficulty for the reduction of defective region.Wherein most importantly being difficult to accurately obtain the die of defective region, secondly is that the maintenance power of dummy is poor.There is the scholar to advocate the surgical operation same period, rebuild defect of maxilla with soft tissue flap or complex tissue lobe, improve patient's life quality, but this art formula operation is complicated, and operating technology requires high, has a big risk, increase wound for the district, can't observe the tumor patient postoperative recurrence situation of finding in early days, these effects limit its apply, thereby the reparation of defect of maxilla is still based on prosthesis.In order to solve the difficult problem of Edentulous Cases prosthesis maintenance power difference, Most scholars adopts and implant implantation body on defective region cheekbone body, for dummy provides reliable maintenance and effectively support, the efficient recovery oral cavity function can be arranged, and wherein the retention effect of the plantation prosthesis of pestle mortar formula, bar cassette attachment maintenance is better.But this method requires patient's defective region to have enough sclerotin (cheekbone body) to support implantation body, can obtain the defective region die exactly.If patient's mouth opening is limited, can not obtain the defective region die exactly, this just has a strong impact on the maintenance and the function of dummy, even repairing failure.
Defect of maxilla patient 30% is with limitation of mouth opening, and therefore concerning the limited defect of maxilla patient of mouth opening, repairing successful key is accurately to obtain the defective region die.At present, obtain the defective region die and adopt individual tray impression method, piecemeal delivery method, sectional impression method etc. more, but said method all only is applicable to no limitation of mouth opening or the patient of slight limitation of mouth opening is only arranged.For the above limitation of mouth opening defect of maxilla of moderate patient, because mouth opening is too little, and damaged big and dark, if adopt above-mentioned model taking method, the defective region impression material takes out very difficulty, die integrity and poor accuracy.In recent years have adopt laser scanner technique obtain the defective region data information more as calculated machine auxiliary counting controlled machine prepare the defect model, but this method can only be obtained the 2-D data of defective region, the integrity of the data that laser scanning obtains and accuracy are all not too high, thereby it is not high to prepare the accuracy of threedimensional model of defect yet.
Summary of the invention
The objective of the invention is to solve defect of maxilla companion limitation of mouth opening patient's delivery difficulty and the not high problem of model accuracy, propose a kind ofly can both be applicable to the limitation of mouth opening patient, again can complete sum accurately obtain the new method of maxilla coloboma section model.
For achieving the above object, the present invention by the following technical solutions: the individual tray that preparation and patient's mouth opening adapt, employing cardiografin liquid blending alginate making impression material; To be loaded with the impression material individual tray earlier, to put into the oral cavity in place fixing, impression material is pressed into and is full of defective region from bicker or Ipsilateral nasal cavity again; Utilize Spiral CT scan to obtain the defective region data; Prepare the model of maxilla coloboma section through three-dimensional reconstruction and rapid shaping technique.
Alginate impression material is a high-penetrability, penetrating property of low-resistance material, in order to reduce the penetrance of impression material to X ray, improve impression material in the X-ray film upper density, increase the impression material and the contrast of soft or hard tissue on every side, for the three-dimensional reconstruction of defective region model creates conditions, the present invention adopts cardiografin liquid and water concocting alginate to make impression material, defective region cardiografin alginate impression material in CT sheet upper density apparently higher than soft or hard tissue on every side, successfully having solved defect is low density area, problem with surrounding soft tissue's poor contrast, can accurately rebuild the defective region threedimensional model, prepare defective region model accurately by rapid shaping technique.The present invention adopts the CT scan three-dimensional reconstruction to prepare the defective region model through rapid shaping technique, solves a limitation of mouth opening patient delivery difficult problem; But the impression material subdividing of defective region takes out, and can not damage damaged chamber mucosa, and the patient suffering is few.CT scan can complete sum accurately obtain the defective region three-dimensional data, and the model of preparation is accurately high, can fully obtain defective region soft tissue undercut, helps the prosthesis maintenance.
The specific embodiment
1. prepare before the maxilla coloboma section CT scan:, remove sticky saliva and food debris in the oral cavity patient's oromaxillo-facial region and the capable routine examination of defective region.According to the size of patient's opening degree, the individual tray that preparation adapts, pallet lip buccal side edge should be not wide or narrow, and trailing edge should cover and surpass the edge extent of excision.Cavity zone adds with the gradation of wax group according to the damaged situation in oral cavity, adjust examination and close, as far as possible with the defective region situation near and there is certain support effect in lip BT.Adopt the cardiografin liquid and 1: 2 by volume ratio of the water blending alginate impression material of mass fraction 60%, wherein a part of impression material is deposited in the pallet, another part pours in the syringe, to press a little in the pallet intake, pushing syringe rapidly under endoscope guiding then, impression material is pressed into defective region from bicker or Ipsilateral nasal cavity, makes defective region be full of impression material.Lead the lip BT of caving in during delivery outward, the die scope is a principle to be full of whole damaged chamber and can to recover lip buccal profile substantially.
2.CT scanning and three-dimensional reconstruction: patient's CT examination platform that lies low, a normotopia adopts Siemens Balance Spiral CT scan machine, the condition of scanning: 130kV, 135mA, 1.0s, bed thickness 2.0mm, pitch 1.5mm, matrix 512 * 512, window width 4000, window position 700, after scanning is finished, take out individual tray, subdividing takes out the defective region impression material.The CT scan data are rebuild the stereo of defective region normotopia, side position and lateral oblique position after Siemens 3Dwirtosu three-dimensional software Flame Image Process, observe defective region from all angles.
3. finish the preparation of defective region model with rapid shaping technique: patient's CT scan data are transferred on the PC after Magics software (Siemens Company provides) is handled from the CT work station, store with reference format (Dicom form) imprinting.(the branch interlamellar spacing is 0.1mm to the CT data again, can closely bond to guarantee each layer rapid shaping resin for Materialise NV, Leuven-Belgium) software generation three-dimensional entity model with Mimics on PC.This process is prepared to finish on the software HRP in the incidental rapid prototyping data of HRP-IIB rapidform machine, in HRP, finish the profile editor of charges and the support setting of molding, just form the RP item file afterwards, export the required processed file .par of rapid prototyping at last.Finish the defective region Preparation of model by the HRP-IIB rapidform machine.Its systematic parameter is: bed thickness 0.1mm; Process velocity 2000mm/s; Laser power: 50W; Spot diameter 0.1mm; Temperature: 95 ℃; Moulding material: thermoplastic resin coated paper.
Adopt this method to obtain the model of defective region, wear with behind the prosthesis, the patient recovers satisfied to facial appearance, can normally take food, and no mouth and nose fistula, voice are comparatively clear.
Claims (2)
1. a method of obtaining maxilla coloboma section model is characterized in that comprising step: the individual tray that preparation patient's opening degree adapts, employing cardiografin liquid and water concocting alginate making impression material; To be loaded with the impression material individual tray earlier, to put into the oral cavity in place fixing, impression material is pressed into and is full of defective region from bicker or Ipsilateral nasal cavity again; Utilize Spiral CT scan to obtain the defective region data; Prepare the model of maxilla coloboma section through three-dimensional reconstruction and rapid shaping technique.
2. the method for claim 1 is characterized in that: described impression material is prepared from by the cardiografin liquid and 1: 2 by volume ratio of the water blending alginate of mass fraction 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810030669XA CN101239012A (en) | 2008-02-25 | 2008-02-25 | Method for acquiring maxilla coloboma section model |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810030669XA CN101239012A (en) | 2008-02-25 | 2008-02-25 | Method for acquiring maxilla coloboma section model |
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| CN101239012A true CN101239012A (en) | 2008-08-13 |
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| CNA200810030669XA Pending CN101239012A (en) | 2008-02-25 | 2008-02-25 | Method for acquiring maxilla coloboma section model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102920534A (en) * | 2012-11-07 | 2013-02-13 | 上海交通大学医学院附属第九人民医院 | Production method of personalized obturator |
| CN103860291A (en) * | 2014-03-19 | 2014-06-18 | 武汉亚洲心脏病医院 | Manufacturing method for tetralogy of fallot VSD (ventricular septal defect) patch |
| CN104749026A (en) * | 2015-04-20 | 2015-07-01 | 重庆大学 | In-vitro bone defect model as well as detection device and detection method for shape resilience |
| CN109124830A (en) * | 2018-06-22 | 2019-01-04 | 上海交通大学医学院附属第九人民医院 | A kind of prosthesis production method based on Design of digital and numerical control processing and fabricating |
-
2008
- 2008-02-25 CN CNA200810030669XA patent/CN101239012A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102920534A (en) * | 2012-11-07 | 2013-02-13 | 上海交通大学医学院附属第九人民医院 | Production method of personalized obturator |
| CN103860291A (en) * | 2014-03-19 | 2014-06-18 | 武汉亚洲心脏病医院 | Manufacturing method for tetralogy of fallot VSD (ventricular septal defect) patch |
| CN103860291B (en) * | 2014-03-19 | 2016-07-06 | 武汉亚洲心脏病医院 | The manufacture method of tetralogy of Fallot ventricular septal defect sticking patch |
| CN104749026A (en) * | 2015-04-20 | 2015-07-01 | 重庆大学 | In-vitro bone defect model as well as detection device and detection method for shape resilience |
| CN109124830A (en) * | 2018-06-22 | 2019-01-04 | 上海交通大学医学院附属第九人民医院 | A kind of prosthesis production method based on Design of digital and numerical control processing and fabricating |
| CN109124830B (en) * | 2018-06-22 | 2021-02-05 | 上海交通大学医学院附属第九人民医院 | Prosthesis manufacturing method based on digital design and numerical control machining manufacturing |
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