Katona T R
Indiana University-Purdue University at Indianapolis, Biomechanics and Biomaterials Research Center.
Am J Orthod Dentofacial Orthop. 1994 Oct;106(4):395-402. doi: 10.1016/S0889-5406(94)70061-3.
A finite element model (FEM) of an orthodontic bracket bonded with glass ionomer cement was developed. The loading on the model simulated shear loading conditions associated with the testing of bonding system strength. The primary purpose of this project was to ascertain the effects of shear load placement and misalignment on the calculated stresses within the cement layer. Over the range of values considered, peak stress values depend profoundly on the location of force application. Peak stresses are less affected by shear force angulation.
建立了一个用玻璃离子水门汀粘结正畸托槽的有限元模型（FEM）。模型上的载荷模拟了与粘结系统强度测试相关的剪切载荷条件。本项目的主要目的是确定剪切载荷位置和错位对水门汀层内计算应力的影响。在所考虑的数值范围内，峰值应力值很大程度上取决于力的施加位置。峰值应力受剪切力角度的影响较小。
