(CAD/CAM)熔岩+高半透明氧化锆与(CAD/CAM) IPS-Emax全冠的边际适应性评价

J.A. Bassel, M.S. Eyad
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引用次数: 0

摘要

本研究的目的是比较(Cad/Cam)机器“熔岩+高半透明氧化锆”和Ips-Emax两种全冠材料的内部和边缘配合。研究样本为预备全冠的前磨牙60颗,分为两组(n1=n2=30),第一组采用Lava Plus高半透明氧化锆制备全冠,第二组采用IPS-Emax制备全冠。应用冠固接步骤前,采用(骨水泥复制技术)测量冠的边缘适应,制作牙龈-切牙切片和中-远端切片,使用BX41 OLYMPUS光学显微镜放大×10测量颈区3个点和接触区3个点的边缘适应。采用Kolmogorov-Smirnov检验证实数据为正态分布,数据分析采用独立样本t检验,显著性水平为(α=0.05)。Lava Plus和IPS-Emax全冠的平均边缘间隙值分别为105.72和152.57微米,在95%置信水平上差异有统计学意义(p<0.05),第二组的平均边缘间隙值比第一组高(46.85微米)。在本研究的局限性中,我们得出结论,全冠的边缘间隙值因其制作材料的不同而不同,因此,LAVA Pluas高半透明氧化锆全冠比Ips-Emax全冠具有更强的适应性,因为它代表的边缘间隙值更小,尽管所有值都在临床可接受的范围内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of marginal adaptation of (CAD/CAM) Lava plus high translucent zirconia and (CAD/CAM) IPS-Emax Full Crowns
The purpose of this research to compare the internal and marginal fit of two full crown’s materials made by (Cad/Cam) machine “lava plus high translucent zirconia and Ips-Emax using replica technique. The research sample consisted of 60 premolars prepared to have a full crown and it was divided into two equal groups (n1=n2=30), in the first group the full crowns were fabricated by Lava Plus high translucent zirconia whereas in the second group the full crowns were fabricated by IPS-Emax. Marginal adaptation of the crowns was measured by (cement replica technique) before applying the cementation steps of crowns, gingivo-incisal sections and mesio-distal sections were made and measured the marginal adaptation in 3 points in the cervical area and 3 points in the contact area using the BX41 OLYMPUS optical microscope magnifying ×10. Normal distribution of data was confirmed by using Kolmogorov-Smirnov test, then data analysis was done using Independent samples t-test at significance level of (α=0.05). The average marginal gap of the Lava Plus and IPS-Emax full crowns were 105.72 and 152.57 micron respectively, therefor there is a statistically significant difference at 95% confidence level (p<0.05), the average marginal gap value of the second group was higher than the first group by (46.85 micron). Among the limitations of this study we conclude that the marginal gap value of the full crowns varies according to the material which they were fabricated by it, Thus, LAVA Pluas high translucent zirconia Full crowns have more adaptation than Ips-Emax Full crowns as it represents less marginal gap values, although all values were within clinically acceptable limits.
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