Three-dimensional computer aided design for individualized post-and-core restoration
10.3760/cma.j.issn.1002-0098.2009.10.014
- VernacularTitle:个性化桩核修复体计算机辅助设计初探
- Author:
Xiao-Yu GU
1
;
Ya-Ping WANG
;
Yong WANG
;
Pei-Jun L(U)
Author Information
1. 北京大学口腔医学院(口腔医院)
- Keywords:
Post and core technique;
Computer-aided design;
Forward engineering
- From:
Chinese Journal of Stomatology
2009;44(10):629-633
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop a method of three-dimensional computer aided design(CAD)of post-and-core restoration.Methods Two plaster casts with extracted natural teeth were used in this study.The extracted teeth were prepared and scanned using tomography method to obtain three-dimensional digitalized models.According to the basic rules of post-and-core design,posts,cores and cavity surfaces of the teeth were designed using the tools for processing point clouds,curves and surfaces on the forward engineering software of Tanglong pmsthodontic system.Then three-dimensional figures of the final restorations were corrected according to the configurations of anterior teeth,premolars and molars respectively.Results Computer aided design of 14 post-and-core restorations were finished,and good fitness between the restoration and the three-dimensional digital models were obtained.Appropriate retention forms and enough spaces for the full crown restoratiohs can be obtained through this method.Conclusions The CAD of three-dimensional figures of the post-and-cort restorations can fulfill clinical requirements.Therefore they can be used in computer-aided manufacture(CAM)of post-and-core restorations.
