임프란트 경부 주위 지지골의 퇴축 단계별 응력 분포 해석

To analyze the distributions of stresses in the bone around the standard implant (3.75mm x 10mm, 3i Co., USA) due to the vertical occlusal load, it was axisymmertrically modelled 4 different models for finite element stress analysis - 0.0mm, 0.6mm, 1.1mm, and 1.7mm bone resorption in the cervical area of the implant. After applied 50N vertical occlusal force to models respectively, the 4models were analyzed. The results obtained were followings； - In the model I (0.0 mm bone resorption in cervical area of implant) and II (0.6mm bone resorption in cervical area of implant), highest stresses (5MPa were concentrated in cervical area of implant, and in the model 111(1.1 mm bone resorption in cervical area of implant), highest stress (3.5 MPa) was concentrated in cervical area of implant, and in the model IV (1.7 mm bone resorption in cervical area of implant), highest stress (2.5MPa) was concentrated in alveolar bone crest. The peak stress in cervicalbone of implant was decreased following bone resorption. - In all 4 models, the stress was low in the bone around implant except cervical area of implant irrelevant to the degree of bone resorption. - The location of stress peak moved from the first bone/implant contact to the alveolar crest following bone resorption in cervical area of implant.