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[Application of computer aided design and rapid prototyping technology for defected maxilla restoration].
Zhonghua Kou Qiang Yi Xue Za Zhi. 2007 Jun; 42(6):333-6.ZK

Abstract

OBJECTIVE

To test a new cast-making method based on computer aided design (CAD) and rapid prototyping (RP) technology for defected maxilla.

METHODS

Head CT data of 12 patients with defected maxilla were transmitted into a computer. Three-dimensional digital image of the patient's defected maxilla was then obtained based on Mimics 8.11 and Geomagic 7.0 and the plastic cast of the defected region was manufactured by prototyping. The obturator was made on this plastic cast that duplicated the undercut tissue of defected area. The prominent part of the obturator was made of elastic heat-curing resin and it was helpful to gain the retention through the engagement between the obturator and the tissue undercut. After the obturator was finished, the upper removable partial denture was fabricated in conventional method. The combination of these two parts was achieved using magnetic attachment. Clinical effects of obturator and removable partial denture were evaluated and the nasalance value of 5 patients before and after insertion of the obturator was measured using nanometer.

RESULTS

The obturator and removable partial denture could be seated into place separately. They all had good retention and stability. After the obturator was seated in place, the nasalance of non-nasal and vowel text decreased from (46.53 +/- 13.86)% to (22.60 +/- 8.52)% (P < 0.001).

CONCLUSIONS

The cast-making method based on CAD and RP technology for cast-making of defected maxilla is feasible and practical.

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Authors+Show Affiliations

Tong D
Department of Prosthodontics, School and Hospital of Stomatology, Peking University, Beijing 100081, China. tongdai666@vip.sina.com
Feng HL
No affiliation info available
Li YS
No affiliation info available
Zhou ZB
No affiliation info available

MeSH

AdultComputer-Aided DesignDental Casting TechniqueDental ModelsDental Prosthesis DesignFemaleHumansImaging, Three-DimensionalMaleMaxillaMiddle Aged

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

17888246

Citation

Tong, Dai, et al. "[Application of Computer Aided Design and Rapid Prototyping Technology for Defected Maxilla Restoration]." Zhonghua Kou Qiang Yi Xue Za Zhi = Zhonghua Kouqiang Yixue Zazhi = Chinese Journal of Stomatology, vol. 42, no. 6, 2007, pp. 333-6.
Tong D, Feng HL, Li YS, et al. [Application of computer aided design and rapid prototyping technology for defected maxilla restoration]. Zhonghua Kou Qiang Yi Xue Za Zhi. 2007;42(6):333-6.
Tong, D., Feng, H. L., Li, Y. S., & Zhou, Z. B. (2007). [Application of computer aided design and rapid prototyping technology for defected maxilla restoration]. Zhonghua Kou Qiang Yi Xue Za Zhi = Zhonghua Kouqiang Yixue Zazhi = Chinese Journal of Stomatology, 42(6), 333-6.
Tong D, et al. [Application of Computer Aided Design and Rapid Prototyping Technology for Defected Maxilla Restoration]. Zhonghua Kou Qiang Yi Xue Za Zhi. 2007;42(6):333-6. PubMed PMID: 17888246.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Application of computer aided design and rapid prototyping technology for defected maxilla restoration]. AU - Tong,Dai, AU - Feng,Hai-lan, AU - Li,Yan-sheng, AU - Zhou,Zhi-bo, PY - 2007/9/25/pubmed PY - 2010/6/30/medline PY - 2007/9/25/entrez SP - 333 EP - 6 JF - Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology JO - Zhonghua Kou Qiang Yi Xue Za Zhi VL - 42 IS - 6 N2 - OBJECTIVE: To test a new cast-making method based on computer aided design (CAD) and rapid prototyping (RP) technology for defected maxilla. METHODS: Head CT data of 12 patients with defected maxilla were transmitted into a computer. Three-dimensional digital image of the patient's defected maxilla was then obtained based on Mimics 8.11 and Geomagic 7.0 and the plastic cast of the defected region was manufactured by prototyping. The obturator was made on this plastic cast that duplicated the undercut tissue of defected area. The prominent part of the obturator was made of elastic heat-curing resin and it was helpful to gain the retention through the engagement between the obturator and the tissue undercut. After the obturator was finished, the upper removable partial denture was fabricated in conventional method. The combination of these two parts was achieved using magnetic attachment. Clinical effects of obturator and removable partial denture were evaluated and the nasalance value of 5 patients before and after insertion of the obturator was measured using nanometer. RESULTS: The obturator and removable partial denture could be seated into place separately. They all had good retention and stability. After the obturator was seated in place, the nasalance of non-nasal and vowel text decreased from (46.53 +/- 13.86)% to (22.60 +/- 8.52)% (P < 0.001). CONCLUSIONS: The cast-making method based on CAD and RP technology for cast-making of defected maxilla is feasible and practical. SN - 1002-0098 UR - https://www.unboundmedicine.com/medline/citation/17888246/[Application_of_computer_aided_design_and_rapid_prototyping_technology_for_defected_maxilla_restoration]_ L2 - http://journal.yiigle.com/LinkIn.do?linkin_type=pubmed&amp;issn=1002-0098&amp;year=2007&amp;vol=42&amp;issue=6&amp;fpage=333 DB - PRIME DP - Unbound Medicine ER -