不同印模方式对松软牙槽嵴印模精度的比较研究

发布时间：2018-01-23 01:53

本文关键词： 无牙颌松软牙槽嵴印模方式　出处：《实用口腔医学杂志》2016年02期 　论文类型：期刊论文

【摘要】：目的:比较3种不同印模方式对无牙颌松软牙槽嵴印模精度的影响。方法:纳入5名松软牙槽嵴患者,分别采用常规法、缓冲法、开窗法制取印模,灌注终模型。采用口内光学扫描仪获取口内及各个终模型上相应松软牙槽嵴区域的光学印模,导入Geomagic Qualify 2013软件进行分析,分析口内松软牙槽嵴的光模与各个终模型上相应区域光模的拟合程度,比较3种印模方式的印模精度。结果:5位患者的光学印模拟合图及软件分析所得3D偏差值(SD、Mean+、Mean-)的方差显示,常规法偏差值最大,缓冲法其次,开窗法最小。结论:对于松软牙槽嵴的无牙颌开窗印模方式可提高印模精度。
[Abstract]:Objective: to compare the effect of three different impression ways on the impression accuracy of edentulous soft alveolar ridge. Methods: five patients with soft alveolar ridge were treated with conventional method, buffer method and fenestration method respectively. Intraoral optical scanner was used to obtain the corresponding soft alveolar ridge optical impression on each final model. The software Geomagic Qualify 2013 was introduced to analyze the fitting degree between the light model of soft alveolar ridge and the corresponding region on each final model. Results the fitting patterns of the optical impression of 5 patients and the variance display of the 3D deviation value obtained by the software analysis were compared with each other. The deviation value of the conventional method is the biggest, the buffer method is the second, and the window opening method is the least. Conclusion: the edentulous fenestration for soft alveolar ridge can improve the precision of the impression.
【作者单位】：军事口腔医学国家重点实验室口腔疾病国家临床医学研究中心陕西省口腔疾病重点实验室第四军医大学口腔医院修复科;
【分类号】：R783.6
【正文快照】： 松软牙槽嵴是一种特殊的无牙颌组织形态,一般由对颌牙力较大而产生的牙槽嵴压迫性吸收,形成的移动性较大的纤维组织[1]。这种过度移动的组织极易受压移位、变形,制取良好的印模极具挑战性[2],会直接影响全口义齿的固位、支持和稳定[3]。文献中,一些无牙颌松软牙槽嵴的病例,通

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