Influence of Material Selection on the Marginal Accuracy of CAD/CAM-Fabricated Metal- and All-Ceramic Single Crown Copings.
Influence of Material Selection on the Marginal Accuracy of CAD/CAM-Fabricated Metal- and All-Ceramic Single Crown Copings.
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DOI：
10.1155/2018/2143906
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发表时间：
2018
影响因子：
--
通讯作者：
Rinke S
中科院分区：
文献类型：
--
作者：
Rödiger M;Schneider L;Rinke S
这项研究评估了四种不同材料在同一加工路线下由CAD/CAM制造的冠冠的边缘精度。扫描了20个金属母模(准备好的上前磨牙)的石头复制品，并将其分为两组。第1组(n=10)用于预试，以确定最佳边缘精度的设计参数。第二组(n=10)用相同的CAD/CAM系统(Gamma 202，Wissner GmbH，Goettingen，德国)制作10个试件：A=工业纯钛(Cp)，B=钴铬合金，C=氧化钇稳定的氧化锆(YSZ)，D=白榴石增强微晶玻璃。光镜下观察两组冠的平均边缘间隙大小(MeanMG)和平均最大边缘间隙大小(AMaxMG)。用多重配对比较(Mann-Whitney，U检验，α=0.0 5，用Bonferroni-Holmes方法校正)分析材料对边际准确度的影响。平均MG值分别为：A：46.92±23.12 μm，B：48.37±29.72 μm，C：68.25±28.54 μm，D：58.73±21.15 μm，A/C组(P=0.0024)、A/D组(P=0.008)、B/C组(P=0.0332)差异有统计学意义。AMaxMG值(A：91.5 4±2 3.39 μm，B：96.86±2 4.19 μm，C：120.66±32.75 μm，D：100.22±10.83 μm)差异无统计学意义。这种材料对CAD/CAM制造的复盖件的边缘精度有很大影响。
This study evaluated the marginal accuracy of CAD/CAM-fabricated crown copings from four different materials within the same processing route. Twenty stone replicas of a metallic master die (prepared upper premolar) were scanned and divided into two groups. Group 1 (n = 10) was used for a pilot test to determine the design parameters for best marginal accuracy. Group 2 (n = 10) was used to fabricate 10 specimens from the following materials with one identical CAD/CAM system (GAMMA 202, Wissner GmbH, Goettingen, Germany): A = commercially pure (cp) titanium, B = cobalt-chromium alloy, C = yttria-stabilized zirconia (YSZ), and D = leucite-reinforced glass-ceramics. Copings from group 2 were evaluated for the mean marginal gap size (MeanMG) and average maximum marginal gap size (AMaxMG) with a light microscope in the “as-machined” state. The effect of the material on the marginal accuracy was analyzed by multiple pairwise comparisons (Mann–Whitney, U-test, α = 0.05, adjusted by Bonferroni-Holmes method). MeanMG values were as follows: A: 46.92 ± 23.12 μm, B: 48.37 ± 29.72 μm, C: 68.25 ± 28.54 μm, and D: 58.73 ± 21.15 μm. The differences in the MeanMG values proved to be significant for groups A/C (p = 0.0024), A/D (p = 0.008), and B/C (p = 0.0332). AMaxMG values (A: 91.54 ± 23.39 μm, B: 96.86 ± 24.19 μm, C: 120.66 ± 32.75 μm, and D: 100.22 ± 10.83 μm) revealed no significant differences. The material had a significant impact on the marginal accuracy of CAD/CAM-fabricated copings.
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DOI：
10.1111/jopr.12209
发表时间：
2015-06-01
影响因子：
4
作者：
Huang, Zhuoli;Zhang, Lu;Zhang, Xiuyin
通讯作者：
Zhang, Xiuyin
DOI：
10.1111/jopr.12006
发表时间：
2013-07-01
影响因子：
4
作者：
Nawafleh, Noor A.;Mack, Florian;Hatamleh, Muhanad M.
通讯作者：
Hatamleh, Muhanad M.
影响因子：
3.4
作者：
Brawek, Petya K.;Wolfart, Stefan;Reich, Sven
通讯作者：
Reich, Sven
影响因子：
2.6
作者：
MCLEAN, JW;FRAUNHOFER, JA
通讯作者：
FRAUNHOFER, JA
影响因子：
2
作者：
Martinez-Rus, Francisco;Ferreiroa, Alberto;Pradies, Guillermo
通讯作者：
Pradies, Guillermo