Three-dimensional finite element analysis of implant denture for anterior tooth missing with different arch shapes

doi:10.3969/j.issn.2095-4344.0982

Abstract

Abstract:

BACKGROUND: The difference of dental arch shape mainly refers to different anterior tooth arrangement, and the shape of dental arch has a certain influence on the peri-implant stress distribution. Current three-dimensional finite element analysis for implant-supported denture mainly focuses on the same dental arch shape, and little is reported on the biomechanical difference of different dental arch shapes.

OBJECTIVE: To compare the biomechanical behaviors of implant-supported fixed partial denture with square, oval and tapered arch shapes using the method of three-dimensional finite element analysis.

METHODS: Based on the Cone-beam CT data of the human jaw, three kinds of models of implant-supported fixed partial denture and the surrounding bone were established. The force of 300 N (100 N of incisor, lateral incisor or canine crown) was applied to the fixed bridges at an angle of 45^o alone the long axis of the tooth from labial side to lingual side to evaluate the Von-Mises stress distribution of cortical bone and cancellous bone and the displacement of implant-abutment complex.

RESULTS AND CONCLUSION: The Max EQV stress in the cortical bone and cancellous bone around the implant in the three models were ranked as tapered model > oval model > square model, and the Max displacement of the implant-abutment complex in the three models were ranked as tapered model > oval model > square model. Overall findings indicate that the square arch shape shows lower stress and better stress distribution than the other two arch shapes.

中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Dental Implants, Dental Arch, Denture, Partial, Fixed, Biomechanics, Tissue Engineering

CLC Number:

R318

Wang Zhong-da, Wang Yi-bo, Ding Chao, Shi Jiu-hui. Three-dimensional finite element analysis of implant denture for anterior tooth missing with different arch shapes[J]. Chinese Journal of Tissue Engineering Research, 2018, 22(30): 4818-4823.

Figures/Tables 4

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