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- 2018
牙齿磨耗程度对Cerec光学印模咬合接触精确性影响的研究
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Abstract:
摘要 目的:研究不同程度磨耗的牙齿对CEREC Omnicam椅旁系统光学印模咬合接触精确性的影响。方法:从2016年12月~2017年6月来南昌大学附属口腔医院就诊的患者中,按纳入标准选择患者牙列中的84颗下颌第一磨牙作为研究对象,其中轻度磨耗41颗,中度磨耗43颗;CEREC Omnicam椅旁系统进行口内光学印模获取咬合接触图像,Canon EOS 60D单反相机记录口内咬合印迹图像,计算CEREC Omnicam 系统内图像与相机拍摄图像的咬合接触区域的重叠率,评价口内光学印模咬合接触的精确性,SPSS17.0软件对实验数据进行统计分析。结果:轻度磨耗组咬合接触区域的重叠率为(86.68±1.41),中度磨耗组的咬合接触区域的重叠率为(87.60±2.06),中度磨耗组的咬合接触区域重叠率较高,采用Wilcoxon秩和检验分析发现差异具有统计学意义(P<0.05)。结论:CEREC Omnicam椅旁系统对轻度、中度磨耗牙齿的口内光学印模咬合接触的精确性均较高,牙齿磨耗对口内光学印模的咬合接触精确性存在一定的影响
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