Peri-implant stress analysis in simulation models with or without trabecular bone structure.
Most 3-dimensional (3D) finite element analyses (FEAs) simplify the cancellous bone to a block and completely ignore its trabecular structure. Thus, a 3D FEA was performed to compare the peri-implant stress distribution of a model in which the trabecular structure was accurately simulated (precise model) with that of a model with a homogenous cancellous bone component (simplified model). In contrast to the simplified model, the distribution patterns and higher stresses in the precise model may explain the overall bone resorption at the implant-bone interface in load-related implant failures. Further studies using data from the jawbone and a more detailed implant simulation are planned.
Stegaroiu
Roxana
R
Division of Oral Health in Aging and Fixed Prosthodontics, Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, Gakkocho-Dori 2-5274, Niigata, Japan. roxana@dent.niigata-u.ac.jp
Watanabe
Naoko
N
Tanaka
Mikako
M
Ejiri
Sadakazu
S
Nomura
Shuichi
S
Miyakawa
Osamu
O
D000818:Animals; D001862:Bone Resorption / Q000503:physiopathology; D001842:Bone and Bones / Q000503:physiopathology*; D003198:Computer Simulation; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry; D019232:Dental Restoration Failure; D004548:Elasticity; D020342:Finite Element Analysis; D000882:Haplorhini; D021621:Imaging, Three-Dimensional; D008954:Models, Biological; D013314:Stress, Mechanical; D014025:Titanium / Q000737:chemistry
D015921:Dental Implants; D003764:Dental Materials; D014025:Titanium