Bone-implant mechanics is one of the factors that contribute to implant stability and success. In this work, voxel-based finite element models were built based on the micro-CT images of human cadaveric mandible specimens before and after implant placement. The computed results show high strain at the bone-implant contact locations and the buccal and lingual bone plates. The strain concentration in the thinner buccal plates was more substantial than that in the thicker lingual plates. The average values of maximum principal strain in the buccal and lingual ROIs were in good agreement with those measured using mechanical testing coupled with micro-CT and digital volume correlation.

The implant position was then virtually changed in the models to be placed lingually or buccally. The computed strain in the buccal bone decreased when the implant was placed away from the buccal plate. The strain in lingual bone also deceased when the implant was moved from the center of the alveolar socket towards the lingual or buccal plate. The results indicate that the distance from implant to the buccal plate can affect the mechanical stimuli in bone, especially in the buccal plate, which may subsequently affect the bone remodeling process and buccal bone resorption.

骨植入物力学是有助于植入物稳定性和成功的因素之一。在这项工作中，基于体素的有限元模型是基于人类尸体下颌骨标本植入前后的显微 CT 图像建立的。计算结果显示骨-植入物接触位置以及颊侧和舌侧骨板的高应变。较薄的颊板中的应变集中比较厚的舌板中的更大。颊侧和舌侧 ROI 中最大主应变的平均值与使用机械测试结合显微 CT 和数字体积相关性测量的值非常一致。

然后在模型中虚拟地改变种植体位置，以放置在舌侧或颊侧。当种植体远离颊侧板放置时，颊侧骨的计算应变降低。当种植体从牙槽窝中心移向舌侧或颊侧骨板时，舌骨的应变也减少了。结果表明，种植体到颊侧板的距离会影响骨中的机械刺激，尤其是颊侧板中的机械刺激，进而影响骨重塑过程和颊侧骨吸收。