Three-dimensional finite element analysis of two anchorage types in closing the space following tooth extraction in maxilla
- VernacularTitle:三维有限元方法比较二种支抗形式关闭上颌拔牙间隙
- Author:
Liping WU
;
Yongchun HE
;
Jun LU
- Publication Type:Journal Article
- Keywords:
Anchorage;
Finite element method;
Implant;
Transpalatal arch;
Displacement
- From:
Journal of Practical Stomatology
2001;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To analyze the differences of two anchorage ty pe s in closing the space following tooth extraction in maxilla. Methods:By using Spiral CT scanning, image processing and CAD technology, a three -dimensional finite element model of maxilla which could simulate the closing o f space following the extraction of maxillary first bicuspid was established. Ba sed on the model, two loading models were developed, which contained palatal imp lant and transpalatal arch respectively to reinforce the anchorage of molar. Th e two anchorage types were compared and the finite element analysis of closing t he space was performed.Results: The displacement(mm) of the firs t permanent molar in X, Y and Z direction in the model with palatal impl ant was -0.001 162 4,-0.000 901 9 and 0.000 196 2, that in the model with transp alatal arch -0.001 163 7,-0.000 902 2 and 0.000 196 4, respectively(P
