[Influence of helix angle and density on primary stability of immediately loaded dental implants: three-dimensional finite element analysis].
Zhonghua Kou Qiang Yi Xue Za Zhi
; 42(10): 618-21, 2007 Oct.
Article
em Zh
| MEDLINE
| ID: mdl-18215373
ABSTRACT
OBJECTIVE:
To analyze effects of different thread helix angles and densities on the primary stability of immediately loaded implants using the three-dimensional finite element model analysis.METHODS:
Five models of three-dimensional finite element (0.8 mm, 1.6 mm, 2.4 mm, double-threaded, and triple-threaded) were created using the commercial codes of Pro/E software, Hypermesh software, and ABAQUS software. In conditions of horizontal and vertical loading, the micro-motion of the finite element models with different thread helix angles and densities were computed with ABAQUS software.RESULTS:
Concerning different thread helix angles, the micro-motion of single-threaded implant was the minimum and that of the triple-threaded was the maximum with vertical and horizontal loading. The micro-motion of doubled-threaded implant was the minimum compared with thread pitch 1.6 mm and the micro-motion of triple-threaded implant was the minimum compared with thread pitch 2.4 mm with vertical and horizontal loading.CONCLUSIONS:
The thread helix angle and density of implants can greatly affect the vertical interfacial micro-motion. With increasing thread pitchs, the resistance of implant to vertical load is weakened; with increasing thread helix angle, the resistance of implant to vertical load is weakened; with increasing thread density, the resistance of implant to the vertical load is weakened.
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Base de dados:
MEDLINE
Assunto principal:
Implantes Dentários
/
Retenção de Dentadura
/
Análise de Elementos Finitos
Idioma:
Zh
Revista:
Zhonghua Kou Qiang Yi Xue Za Zhi
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
China