Akpinar I, Demirel F, Parnas L, Sahin S
Department of Prosthodontics, Hacettepe University, Faculty of Dentistry, Ankara, Turkey.
Quintessence Int. 1996 Jan;27(1):11-7.
Stress and strain patterns around two rigid implant designs used as an abutment were compared and the displacement of natural teeth was investigated. The finite-element method was utilized to determine the stress and strain distributions. The results were evaluated in terms of the maximal tensile and compressive stress and strain in the bone around the abutment tooth and implants. The results indicated that the ITI 1 (hollow screw) implant led to high stress concentrations particularly in the apical region. The stress-transferring characteristics of ITI 2 (solid screw) implant were found to be more suitable than were those of ITI 1.
比较了用作基牙的两种刚性种植体设计周围的应力和应变模式，并研究了天然牙的位移。采用有限元方法确定应力和应变分布。根据基牙和种植体周围骨中的最大拉伸和压缩应力及应变对结果进行评估。结果表明，ITI 1（空心螺钉）种植体导致高应力集中，尤其是在根尖区域。发现ITI 2（实心螺钉）种植体的应力传递特性比ITI 1更合适。
