デンタルインプラントと下顎骨の力学的相互作用に及ぼす固定式補綴装置の材質の影響 Effects of Prosthesis Materials on the Mechanical Interaction between Mandibular Bone and Dental Implants
The purpose of this study is to develop a detailed 3-Dimension mandibular model with dental implants on the basis of CT data and to conduct stress analysis to characterize the effects of the material type of prosthesis on stress/strain distribution in the mandibular bone. Three types of materials, a polymer and two metals, with different elastic properties were chosen as the prosthesis materials. The analytical results showed that the Mises equivalent stress and equivalent elastic strain along the circumference of the implant at distal side were much higher than in the anterior region. It was also shown that the stress/strain concentration at the bone increased with decreasing the prosthesis stiffness. The stress/strain concentration observed in the circumference of the implants could be the driving force for loosening and fracture of the implants.
粉体および粉末冶金 55(5), 347-352, 2008-05-15
Japan Society of Powder and Powder Metallurgy