Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (30): 5531-5534.doi: 10.3969/j.issn.1673-8225.2010.30.006

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Analysis of static force and fatigue between thread structure of dental implant and contact surface

Gao Fei 1,2,3, Zhang En-wei 1,2, Wei Shi-cheng 2,4, Fang Jing 1,2   

  1. 1 College of Engineering, Peking University, Beijing  100871, China; 2 Center of Biomedical Materials, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing  100871, China; 3 Beijing Yuande Bio-Medical Engineering Co., Ltd., Beijing  100176, China; 4 School of Stomatology, Peking University, Beijing  100044, China
  • Online:2010-07-23 Published:2010-07-23
  • Contact: Wei Shi-cheng, Professor, Center of Biomedical Materials, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; School of Stomatology, Peking University, Beijing 100044, China sc-wei@pku.edu.cn
  • About author:Gao Fei☆, Doctor, College of Engineering, Peking University, Beijing 100871, China; Center of Biomedical Materials, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; Beijing Yuande Bio-Medical Engineering Co., Ltd., Beijing 100176, China soarfgoal@gmail.com
  • Supported by:

    the National Key Scientific and Technological Project, No. 2007CB936103*; Foundation for Interdisciplinary Studies of Peking University, No. PKUJC2009001*; 985 Item of Peking University*

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Abstract:

BACKGROUND: Many factors affluence the stability of dental implant, the implant-bone interface, implant-abutment interface, as well as the thread structure of implant, play a key role in long term reliability.
OBJECTIVE: To analyze static force and fatigue between thread structure of dental implant and contact surface, and to explore the potentially fatigue fracture of dental implant.
METHODS: A three-dimensional model of dental implant and alveolar bone were established by using CAD software CATIA and Ansys Workbench, respectively. Then the static force and fatigue between dental implant and alveolar bone were analyzed after meshing the model, defining attribute, connections, and loading.
RESULTS: A two-segment abutment implant system was constructed using CAD software CATIA. The implant system was characterized by platform transfer, hexagonal location, and taper seal, which represented structure of implants. The size of implant system was designed according to actual sizes and the assemblage was based on standard of mechanical design.    Stress concentrated in screw and interface of dental implant and fatigue safety factor of the region was lower. These are potentially fatigue fracture of dental implant.

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