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Radiographic analysis of peri-implant trabecular bones after implant placement

机译:植入物植入后植入物周围小梁的放射照相分析

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Intraoral radiographs are routinely used to assess a bone-implant interface after placement of a dental implant. Unlike marginal bone loss occurring in outer and denser crestal bones, bone resorption in inner and networked trabecular bones has not been thoroughly investigated. In this study, we hypothesize that peri-implant trabecular bones may undergo bone resorption and osseointegration after implant placement. Quantitative image analysis was performed on longitudinal radiographs of implants (n=24). Between 4 weeks and 8 weeks after the implant placement, trabecular bones showed increased intensity (Wilcoxon pairwise signed rank test, p<0.05). However, in 20 weeks, the intensity decreased. Furthermore, trabecular bones become shorter. Thickness of peri-implant bones gradually increased starting from 4 weeks and then decreased toward 20 weeks (quadratic regression, p<0.05). Our results suggest that routinely taken intraoral radiographs may be useful in assessing the status of peri-implant bones after implant placement.
机译:放置牙植入物后,通常使用口内X光片评估骨植入物的界面。与在外部和较密的颅骨中发生边缘性骨质流失不同,对内部和网状小梁骨的骨吸收没有进行彻底的研究。在这项研究中,我们假设植入物植入后,植入物周围的小梁骨可能会发生骨吸收和骨整合。在植入物的纵向X光片上进行定量图像分析(n = 24)。在植入物放置后的4周到8周之间,小梁骨强度增加(Wilcoxon成对符号秩检验,p <0.05)。但是,在20周内,强度下降。此外,小梁骨变短。种植体周围骨的厚度从4周开始逐渐增加,然后在20周时逐渐减小(二次回归,p <0.05)。我们的结果表明,常规口腔内X光片可能有助于评估植入物放置后植入物周围骨的状态。

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