Meijer H J, Kuiper J H, Starmans F J, Bosman F
Department of Oral-Maxillofacial Surgery, Prosthodontics, and Special Dental Care, University of Utrecht, Faculty of Medicine, The Netherlands.
J Prosthet Dent. 1992 Jul;68(1):96-102. doi: 10.1016/0022-3913(92)90293-j.
The stress distribution around dental implants was investigated by use of a two-dimensional model of the mandible with two implants. A vertical load of 100 N was imposed on abutments or the bar connection. The stress was calculated for a number of superstructures under different loading conditions with the help of the finite element method. The length of the implants and the height of the mandible were also varied. A model with solitary abutments showed a more uniform distribution of the stress when compared with a model with connected abutments. The largest compressive stress was also less in the model without the bar. Using shorter implants did not have a large influence on the stress around the implants. When the height of the mandible was reduced, a substantially larger stress was found in the bone around the implants because of a larger overall deformation of the lower jaw.
通过使用带有两颗种植体的下颌骨二维模型，研究了牙种植体周围的应力分布。在基台或杆连接上施加100 N的垂直载荷。借助有限元方法，计算了不同加载条件下多种上部结构的应力。种植体的长度和下颌骨的高度也有所变化。与连接基台的模型相比，孤立基台模型的应力分布更均匀。无杆模型中的最大压应力也较小。使用较短的种植体对种植体周围的应力影响不大。当下颌骨高度降低时，由于下颌骨整体变形较大，种植体周围骨中的应力明显增大。
