J Endod:根尖显微外科手术:一个愈合模式的4维分析

2019-03-12 lishiting MedSci原创

目前,尖周显微外科手术的成功依赖于硬骨板的修复和症状的消除。然而,不恰当的位点存留会阻碍后期种植体的放置。尽管在过去不太可能,但CBCT影像和计算机辅助设计的到来允许随着时间的推移对手术位置进行间接和准确的3维分析。这篇研究的目的是为了评估尖周显微外科手术后颊侧骨板的体积愈合模式,并着重分析颊舌向骨厚度以及骨皮质表面轮廓的复原情况。

目前,尖周显微外科手术的成功依赖于硬骨板的修复和症状的消除。然而,不恰当的位点存留会阻碍后期种植体的放置。尽管在过去不太可能,但CBCT影像和计算机辅助设计的到来允许随着时间的推移对手术位置进行间接和准确的3维分析。这篇研究的目的是为了评估尖周显微外科手术后颊侧骨板的体积愈合模式,并着重分析颊舌向骨厚度以及骨皮质表面轮廓的复原情况。37名患者在尖周显微外科后随访至少一年(median = 25 months, total range = 12-31 months)。将术前和术后CBCT影像转换为数字3维模型以此分析体积愈合情况。随后,使模型导入软件以分析随着时间推移的容量变化。使用Geomagic software (3D Systems, Rock Hill, SC)完成分析,它可以导入容量数据、计算容量变化和误差界限。结果显示,12例病例满足体积分析的条件。骨皮质容积平均减少-24.9 mm3 (interquartile range = -8.94 to -67 mm3),平均线性误差0.7 mm。这相当于颊舌向平均0.1-0.25 mm的容积缺失。所有病例骨皮质的恢复均在误差界

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    2019-03-20 zwjnj2

    学习学习

    0

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