Three-dimensional finite element analysis of tilted implants in the maxillary posterior region

doi:10.3969/j.issn.2095-4344.2013.33.009

Abstract

Abstract:

BACKGROUND: Bone mass deficiency is common during implantation in the maxillary posterior region. Some patients do not want to accept extra surgery for increasing bone because of surgical trauma or medical expenses. Technology of the tilted implant has been proposed, but it has not been recognized and has a lack of relevant evidence.
OBJECTIVE: To investigate the stress distribution of per-implant bone which is subjected to different loading conditions when the different abutment angulations are applied, and to analyze the safety factor of different implants to verify the feasibility of the tilted implant in the maxillary posterior region.
METHODS: The finite element models of the different angulate abutments were established in commercial software packages. The safety factor of implant in the same power load was observed, and stress and strain condition of the implant and the surrounding bone was also observed.
RESULTS AND CONCLUSION: With the increased abutment angulation, the maximum strain of pre-implant bone was significantly increased, and the safety factor of implant decreased gradually. Thus, the tilted implant is not recommended in the maxillary posterior region.

Key words: tissue construction, oral tissue construction, tilted, implantation, finite element analysis, upper jaw, posterior tooth region, three-dimensional, abutment, angulation, bone deficiency, strain, safety factor

CLC Number:

R318

Chen Zu-xian, Wang Chao, Wang Li-jun . Three-dimensional finite element analysis of tilted implants in the maxillary posterior region[J]. Chinese Journal of Tissue Engineering Research, doi: 10.3969/j.issn.2095-4344.2013.33.009.

Figures/Tables 3

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