3种石膏材料构建的全冠数字化模型精度的对比研究

发布时间：2018-06-08 11:45

本文选题：牙科石膏材料 + 数字化模型　；参考：《重庆医科大学学报》2014年09期

【摘要】：目的:研究Cerec Inlab MC XL系统3种石膏材料构建的全冠数字化模型的精度。方法:制备一标准右上第一磨牙全冠预备体模型,并复制超硬石膏、Esthetic-base、CAM-base石膏扫描代型各8个。每组代型采用InEos扫描仪Rotational旋转扫描方式分别获取数字化模型8个(超硬石膏组采取喷粉后扫描),Inlab 3D(version 3.65)软件测量每个数字化模型相应位点的距离参数并与实物比较。本实验采用SPSS 19.0统计软件对数据进行分析。结果:超硬石膏组的成像质量略优于Esthetic-base组和CAM-base组。Esthetic-base组、CAM-base组与实物组在颊舌(P=0.199)、近远区域(P=0.087)的测量值比较差异无统计学意义,但超硬石膏组与实物组比较有统计学差异(P=0.00,P=0.003)。此外,超硬石膏组在近远区域的偏差值较颊舌区域大,差异有统计学意义(F=7.310,P=0.000)。超硬石膏组、Esthetic-base组、CAM-base组的总体偏移值分别为(0.049±0.036)、(0.016±0.050)、(0.017±0.052)mm。结论:在本实验条件下Esthetic-base、CAM-base石膏构建的数字化模型精度较高,而超硬石膏喷粉构建的数字化模型精度较差,不推荐使用。
[Abstract]:Aim: to study the accuracy of the full crown digital model constructed by three kinds of gypsum materials in Cerec Inlab MC XL system. Methods: a standard right first molar model of full crown preparation was prepared, and the superanhydrite Esthetic-base CAM-base gypsum scanning model was made. In each generation, 8 digital models (superanhydrite group) were obtained by rotating rotation scanning with InEos scanner. The distance parameters of corresponding sites of each digital model were measured and compared with those of real objects. This experiment uses SPSS 19.0 statistical software to carry on the analysis to the data. Results: the imaging quality of the super-anhydrite group was slightly better than that of the Esthetic-base group and the Esthetic-base group. In addition, the deviation value of the superanhydrite group in the near and far region was larger than that in the buccal and lingual region, and the difference was statistically significant. The total deviation values of the Esthetic-base group in the super-anhydrite group were 0.049 卤0.036, 0.016 卤0.050 and 0.017 卤0.052 mmrespectively. Conclusion: the accuracy of the digital model constructed by Esthetic-base CAM-base gypsum is higher than that of the superanhydrite powder spraying model under this experimental condition, so it is not recommended to use.
【作者单位】：重庆市巴南区人民医院口腔科;重庆医科大学附属口腔医院修复工艺科、重庆口腔疾病与生物医学重庆市重点实验室;
【分类号】：R783.3

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