Predictions of bone remodeling around dental implant systems.
Predictions of bone remodeling around dental implant systems.
复制标题
DOI：
10.1016/j.jbiomech.2008.01.032
复制
发表时间：
2008
影响因子：
2.4
通讯作者：
H. Chou;J. Jagodnik;Sinan Müftü
中科院分区：
文献类型：
--
作者：
H. Chou;J. Jagodnik;Sinan Müftü
本研究提出了一种数学骨重建算法的实施，以骨适应在下颌骨前磨牙区周围的各种牙种植体系统，从而揭示了一个新的视角，在牙种植体力学的复杂相互作用。根据CT扫描建立骨的二维平面应变模型。种植体轮廓对内部骨重建的影响进行了研究，考虑四个牙科种植体系统的轮廓类似于市售的和另外四个圆柱形和圆锥形的横截面。重塑算法预测非均匀密度/弹性模量分布;并且，植入物轮廓对其分布方式有一定影响。预计骨密度在种植体螺纹尖端增加，但在凹槽内减少。与有螺纹的种植体系统相比，无螺纹种植体有利于在其周围形成更软的骨。种植体的整体轮廓（尺寸和形状）影响骨密度再分布，但不同种植体系统之间的差异相对较小。
This study presents the implementation of a mathematical bone remodeling algorithm to bone adaptation in the premolar area of the mandible around various dental implant systems, and thus sheds a new perspective to the complex interactions in dental implant mechanics. A two-dimensional, plane strain model of the bone was built from a CT-scan. The effect of implant contour on internal bone remodeling was investigated by considering four dental implant systems with contours similar to commercially available ones and another four with cylindrical and conical cross-sections. The remodeling algorithm predicts non-homogeneous density/elastic modulus distribution; and, implant contour has some effect on how this is distributed. Bone density is predicted to increase on the tips of the threads of the implants, but to decrease inside the grooves. Threadless implants favor to develop a softer bone around their periphery, compared to implant systems that have threads. The overall contour (dimensions and the shape) of an implant affect the bone density redistribution, but the differences between different implant systems are relatively small.