Ten-year survival of pressed, acid-etched e.max lithium disilicate monolithic and bilayered complete-coverage restorations: Performance and outcomes as a function of tooth position and age
Ten-year survival of pressed, acid-etched e.max lithium disilicate monolithic and bilayered complete-coverage restorations: Performance and outcomes as a function of tooth position and age
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DOI：
10.1016/j.prosdent.2018.11.024
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发表时间：
2019-05-01
影响因子：
4.6
通讯作者：
Weber, Hans-Peter
中科院分区：
文献类型：
--
作者：
Malament, Kenneth A.;Natto, Zuhair S.;Weber, Hans-Peter
陈述问题。目前还缺乏关于二硅酸锂微晶玻璃的长期临床资料，以及不同的技术和临床变量对生存率的影响。本临床研究的目的是检查压制二硅酸锂玻璃陶瓷植入物的10年生存率以及临床参数与结果、材料和方法之间的关系。从私人临床实践中入组了500名五十六例患者，年龄从17岁到97岁不等。所有参与者都需要在口腔的任何区域进行单牙替换或修复，包括单冠，3单元固定部分义齿，悬臂式前牙修复和基础修复。同时，研究了1960年完全覆盖的疫苗的寿命。参与者可以选择黄金，传统的金属陶瓷或二硅酸锂修复。选择玻璃陶瓷装饰的参与者被纳入研究。通过使用召回时确定的临床因素评估玻璃陶瓷置换的总生存率，并通过使用Kaplan-Meier生存曲线评估各种临床参数的影响，以解释磨损偏倚和其他失败原因。使用对数秩检验（α = 0.05）确定参数之间差异的统计学显著性。共对556例选择二硅酸锂治疗的患者进行了评价。患者在修复体放置时的平均年龄为62岁，范围为17至97岁。男性占39.5%，女性占60.5%。许多患者需要不止一次的修复。1960年全覆盖的二硅酸锂电池记录了7次故障（大块断裂或需要更换的大芯片），平均故障时间为4.2年。计算的装置的总风险时间为5113年，估计失效风险为每年0.14%。10年估计累积生存率为99.6%（95%置信度：99.4-99.8）。1410例单层和550例双层E.max全覆盖肺移植10.4年和7.9年的累积生存率分别为96.5%和100%（P
Statement of problem. Long-term clinical data on the survival of pressed lithium disilicate glass-ceramic restorations and the effect that different technical and clinical variables have on survival are lacking.Purpose. The purpose of this clinical study was to examine the 10-year survival of pressed lithium disilicate glass-ceramic restorations and the relationship between clinical parameters on outcomes.Material and methods. Five hundred and fifty-six patients, ranging in age from 17 to 97 years, from a private clinical practice were enrolled. All participants required single-tooth replacement or repair in any area of the mouth, including single crowns, 3-unit fixed partial dentures, cantilevered anterior restorations, and foundation restorations. Together, the longevity of 1960 complete-coverage restorations was studied. Participants were offered the options of gold, conventional metal-ceramic, or lithium disilicate restoration. Participants who chose glass-ceramic restorations were included in the study. The overall survival of the glass-ceramic restorations was assessed by using clinical factors determined at recall, and the effect of various clinical parameters was evaluated by using Kaplan-Meier survival curves to account for attrition bias and other reasons for failure. The statistical significance of differences between parameters was determined using the log-rank test (alpha=.05).Results. A total of 556 patients electing lithium disilicate restorations were evaluated. The mean age of patients at the time of restoration placement was 62 years, with a range of 17 to 97 years. Men comprised 39.5% of the patients, and women, 60.5%. Many patients required more than one restoration. Seven failures (bulk fracture or large chip requiring replacement) were recorded for the 1960 complete-coverage lithium disilicate restorations, with the average time of failure being 4.2 years. The total time at risk computed for the units was 5113 years, providing an estimated failure risk of 0.14% per year. The 10-year estimated cumulative survival was 99.6% (95% confidence : 99.4-99.8). The estimated cumulative survival rate of 1410 monolithic and 550 bilayered e.max complete-coverage restorations was 96.5% and 100%, respectively, at 10.4 and 7.9 years (P