Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (44): 8223-8227.doi: 10.3969/j.issn.2095-4344.2012.44.011

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Influence of distractor diameter on initial stability of implantal distraction: A three-dimensional finite element analysis

Hui Guang-yan1, Li Tao2, Qiu Min1, Jia Wen-min1   

  1. 1Department of Stomatology, Qingdao First Snatorium in Jinan Military Area Command of Chinese PLA, Qingdao 266071, Shandong Province, China
    2Department of Stomatology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China
  • Received:2012-01-04 Revised:2012-04-09 Online:2012-10-28 Published:2012-10-28
  • Contact: Li Tao, Master, Attending physician, Department of Stomatology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China
  • About author:Hui Guang-yan☆, Doctor, Chief physician, Department of Stomatology, Qingdao First Snatorium in Jinan Military Area Command of Chinese PLA, Qingdao 266071, Shandong Province, China huiguangyan1968@126.com

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Abstract:

BACKGROUND: Finite element analysis can be applied to imitate orthopedic operations and biomechanics analysis of orthopedic model. Finite element analysis has been considered as an important method in surgery for orthopedic biomechanics research.
OBJECTIVE: To evaluate the influence of the distractor diameter on the initial stability of implantal distraction.
METHODS: Models with different distractor diameters were made by three-dimensional finite element methods. The stress distribution on the surface of distractor and the maximum deformation of the transport bone segment and the distractor were analyzed.
RESULTS AND CONCLUSION: For the alveolar ridge with good bone quality, over-expanded the diameter of the distractor might lead to the bone stress increasing on transportation section; for the atrophic alveolar ridge with poor bone quality, increasing the distractor diameter was conducive to improve the stress distribution of the bone-distractor complex. Distractor diameter had a major influence on the stress distribution of bone-distractor complex. Appropriate diameter of distractor should be chosen according to both requirement of implant and distraction.

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