Three years in vivo wear: core-ceramic, veneers, and enamel antagonists.
Three years in vivo wear: core-ceramic, veneers, and enamel antagonists.
复制标题
DOI：
10.1016/j.dental.2012.02.001
复制
发表时间：
2012-06
期刊：
影响因子：
5
通讯作者：
Anusavice, Kenneth J.
中科院分区：
文献类型：
--
作者：
Esquivel-Upshaw, Josephine F.;Rose, William F., Jr.;Barrett, Allyson A.;Oliveira, Erica R.;Yang, Mark C. K.;Clark, Arthur E.;Anusavice, Kenneth J.
测试的假设，有相等的磨损率釉质与釉质和陶瓷与釉质，分析在体内磨损的冠陶瓷，其天然釉质拮抗剂，和相应的两个对侧牙齿;和，咬合力不相关的磨损。进行了一项对照临床试验，涉及需要全覆盖牙冠对抗釉质拮抗剂的患者。咬合力的测量使用双边gnathodynamic。随机分配金属/陶瓷（Argedent 62，阿尔根公司/IPS d.SIGN饰面）的单个单元，或Empress 2/Eris或e.maxPress芯/e.maxCeram釉（陶瓷：Ivoclar Vivadent，美国）的芯-陶瓷/饰面，并进行制造和骨水泥固定。在1周（基线）和1年、2年和3年时，对陶瓷冠以及每个上颌和下颌象限进行修复。扫描所得模型（3D激光扫描仪）。通过将基线与年度图像叠加计算最大磨损。31名患者总共需要36个牙冠。每个修复体有三个相关的釉质牙; 1）冠，2）拮抗剂，3）对侧，和4）对侧拮抗剂。SAS PROC MIXED（α=0.05）表明，在全冠陶瓷、釉质拮抗剂和对侧之间，平均最大磨损无统计学显著性。然而，牙釉质磨损在口内位置（p=0.04）和不同年份（p<0.02）之间具有统计学显著性。单独分析，釉质对侧拮抗剂表现出明显更大的磨损（p<0.001）。考虑到所有磨损部位，与咬合力无相关性（p=0.15）。陶瓷及其拮抗剂表现出在正常釉质的范围内的体内磨损率。未来的研究应检查对侧拮抗剂釉质磨损的影响。
Test the hypotheses that there are equivalent wear rates for enamel-versus-enamel and ceramic-versus-enamel, analyzing the in vivo wear of crown ceramics, their natural enamel antagonists, and the corresponding two contralateral teeth; and, that bite force does not correlate with the wear. A controlled, clinical trial was conducted involving patients needing full coverage crowns opposing enamel antagonists. Bite forces were measured using a bilateral gnathodynamometer. Single-unit restorations of metal/ceramic (Argedent 62, Argen Corp/IPS d.SIGN veneer); or, core-ceramic/veneer from either, Empress2/Eris, or e.maxPress core/e.maxCeram glaze (ceramics: Ivoclar Vivadent, USA) were randomly assigned, fabricated and cemented. Impressions were made of the ceramic crowns, as well as each maxillary and mandibular quadrant at one week (baseline) and one, two and three years. Resulting models were scanned (3D laser scanner). Maximum wear was calculated by superimposing baseline with annual images. There were a total of thirty-six crowns required for thirty-one patients. Each restoration had three associated enamel teeth; 1) crown, 2) antagonist, 3) contralateral, and 4) contralateral-antagonist. SAS PROC MIXED (α=0.05) indicated no statistical significance for mean maximum wear among crown ceramics, enamel antagonists and contralaterals. However, enamel wear was statistically significant in relation to intraoral location (p=0.04) and among years (p<0.02). Analyzed alone, the enamel contralateral-antagonist exhibited significantly greater wear (p<0.001). Considering all wear sites, there was no correlation with bite force (p=0.15). The ceramics and their antagonists exhibited in vivo wear rates within the range of normal enamel. Future studies should examine the wear implications of the contralateral-antagonist enamel.
登录
查看更多内容
影响因子：
2.9
作者：
Abe, Y;Sato, Y;Vanherle, G
通讯作者：
Vanherle, G
影响因子：
4.6
作者：
GIBBS, CH;MAHAN, PE;WALSH, EK
通讯作者：
WALSH, EK
影响因子：
5
作者：
Heintze, S. D.;Cavalleri, A.;Rousson, V.
通讯作者：
Rousson, V.
影响因子：
7.6
作者：
Kraemer, N.;Kunzelmann, K. -H.;Frankenberger, R.
通讯作者：
Frankenberger, R.
影响因子：
7.6
作者：
Mehl, A;Gloger, W;Hickel, R
通讯作者：
Hickel, R