种植体在上颌骨复合体应力的三维有限元分析

目的：比较种植体在上颌骨复合体前，中、后3个部位，在垂直和水平载荷下的应力分布，讨论种植体丰颌骨复合体中的生物力学行为。方法：采用三维有限元法。结果：种植体在上颌骨复合体内，加载后，上颌骨复合体各部位应力均较小，较加载部位和种植体内应力小，上颌骨复合体前、中、后3个种植体比较，种植体和上颌骨复合体应力后牙大于尖牙大于前牙。结论：上颌骨复合体具有良好的使集中受力分散的作用。上颌骨复合体内种植具有良好的生物力学可行性。

Three-dimensional finite element analysis of implant in human maxillary complex

Objective: To compare the stress distribution of implant in maxillary complex in anterior, medium and posteriorregion under vertical and horizontal loading.Methods:Three-dimensional finite element analysis method was used.Results: The stresses of implant in maxilllary complepx were smaller than the stresses in implant and the loadingarea.Comparing of the implant in anterior, medium and posterior region in the maxillary complex , stress order implantand maxillary complex was obtained as follows: biggest in posterior teeth, bigger in the canines and least in incisors.Conclusions: Maxillary complex possesses good function to scatter the converging force. Implant in maxillary complex isavailability for good biomechanism.