The impact of bone quality on implant stability after maxillary sinus augmentation: A 3-D finite element analysis

Abstract

Abstract: PURPOSE: To evaluate the impact of bone quality on implant stability. METHODS: Simplified posterior maxillary segment models were established and classified them into three types of bone quality: D2, D3 and D4. Each type of maxilla was treated with or without bone grafts. The implant was assembled into the maxilla. An oblique force of 150 N was applied to the central node in the top surface of implant. The stress distribution pattern of surrounding bone was analyzed by 3-D finite element method. RESULTS: The stress was mainly concentrated on the cortical bone around the implant neck. The magnitude of stress in surrounding bone increased following the deterioration of bone quality and decreased with the help of grafts. CONCLUSIONS: Bone quality was closely related to the magnitude of stress in bone tissue and bone graft can improve the overload caused by poor bone quality.

Key words: Maxillary sinus augmentation, Bone quality, 3-D finite element analysis

CLC Number:

R783.4

MA Meng, SHEN Hong-zhou, HUANG Sheng-yun, ZUO Shu-yu, ZHANG Shi-zhou, ZHANG Dong-sheng. The impact of bone quality on implant stability after maxillary sinus augmentation: A 3-D finite element analysis[J]. China Journal of Oral and Maxillofacial Surgery, 2016, 14(3): 209-212.

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