Impact of Bone Augmentation of Facial Bone Defect around Osseointegrated Implant: A Three Dimensional Finite Element Analysis

Dentistry Journal

Mustafa AlKhader¹  Mohammad Abusamak²  Shohei Kasugai³  Noriyuki Wakabayashi⁴  Malik Hudieb⁵  Salah Mortaja⁶ 

[1] Department of Oral Medicine and Oral Surgery, Jordan University of Science and Technology, Irbid 22110, Jordan;Faculty of Dentistry, McGill University, Montréal, QC H3A 1G1, Canada;Oral Implantology and Regenerative Dental Medicine Department, Tokyo Medical and Dental University, Tokyo 113-8510, Japan;Removable Partial Prosthodontics Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan;Section of Periodontology, Department of Preventive Dentistry, Jordan University of Science and Technology, Irbid 22110, Jordan;The Chris O’Brien Lifehouse, Sydney, NSW 2050, Australia;

关键词: fenestration;    dental implant;    esthetic zone;    finite element analysis;    strain;   

DOI  :  10.3390/dj9100114

来源: DOAJ

【 摘 要 】

(1) Background: When dental implants are placed at the esthetic zone, facial bone fenestration might be expected. This study aimed to evaluate the biomechanical effect of bone augmentation around implants with facial bone fenestration defects using the finite element method. (2) Methods: An anterior maxillary region model with facial concavity was constructed with a threaded implant inserted following the root direction, resulting in apical threads exposure to represent the fenestration model. Several bone coverage levels were simulated by gradually shifting the deepest concavity point buccally, mimicking bone augmentation surgeries with different bone fill results. Oblique forces were applied, and analysis was performed. (3) Results: Peak compressive stress magnitude and distribution varied according to the level of exposure and facial concavity depth. The fenestration model demonstrated a slightly lower peak peri-implant bone stress, smaller implant displacement, and smaller bone volume with strain levels above 200 µ strain. A gradual increase in compressive stress, implant displacement, and bone volume exhibited strain level above 200 µ strain was observed with the increased bone fill level of the facial bone fenestration. (4) Conclusions: Exposure of implants apical threads at the maxillary anterior region does not significantly affect the peri-implant stress and strain results. However, increasing the buccolingual width and eliminating the buccal concavity might increase the peri-implant bone volume exhibited favorable loading levels.

【 授权许可】

Unknown