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首页> 外文期刊>The Journal of Prosthetic Dentistry >Survival of Dicor glass-ceramic dental restorations over 14 years: Part I. Survival of Dicor complete coverage restorations and effect of internal surface acid etching, tooth position, gender, and age.
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Survival of Dicor glass-ceramic dental restorations over 14 years: Part I. Survival of Dicor complete coverage restorations and effect of internal surface acid etching, tooth position, gender, and age.

机译：Dicor玻璃陶瓷牙科修复体的生存期超过14年：第一部分。Dicor完全覆盖修复体的生存率以及内部表面酸蚀，牙齿位置，性别和年龄的影响。

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STATEMENT OF PROBLEM: There are no long-term data on Dicor glass-ceramic restoration survival in the human oral cavity and the effect that different technical and clinical variables have on survival. PURPOSE: This prospective study examined the relationship of different clinical parameters on the survival of Dicor glass-ceramic restorations in the human oral cavity. MATERIAL AND METHODS: A total of 417 subjects (from 17 to 91 years of age) participated. All subjects required single unit fixed prosthodontics in any area of the mouth and/or 3-unit fixed partial dentures or cantilevered anterior restorations. They were offered the option of a gold or conventional metal-ceramic restoration, or a Dicor restoration with potentially improved esthetic results, better wear characteristics, and diminished oral plaque accumulation. Overall survival of the restorations was determined and the effect of various clinical parameters evaluated with Kaplan-Meier survival curves. Log rank tests were used to determine statistically significant differences among parameters. RESULTS: For the 1444 units placed, 188 failures were recorded. Total time at risk for the units was 7319 years providing an estimated risk of 2.45% per year. Probabilities of survival of "typical" acid-etched Dicor and nonacid-etched Dicor restorations were 76% and 50%, respectively, at 14.1 years (P <.001). Probabilities of survival of typical acid-etched and nonacid-etched Dicor complete coverage restorations were virtually identical to those observed in the full data set. There was a 2.2 times greater risk of failure associated with the use of nonacid-etched Dicor complete coverage than acid-etched restorations (P <.01). Complete coverage restoration survival was highest in the incisor region and decreased to the molars in both arches. Second molars showed the highest failure rate. No complete coverage restorations failed on lateral incisors during the entire study. Probability of survival of a typical acid-etched Dicor complete coverage restoration in male subjects was 71%, and 75% for female subjects at 14.1 years (P <.01). The major difference appeared to be due to a greater failure rate in the maxillary arch of the male. Survivor functions of acid-etched Dicor complete coverage restorations for subjects in <33 years, 33 to 52 years, and 52 years age groups were 88% at 9 years, 62% at 14 years, and 82% at 14 years, respectively. CONCLUSIONS: Dicor restorations can survive successfully over time with certain reservations. Long-term survival improved significantly when restorations were acid-etched before luting. Complete coverage restoration failures per year decreased from molars to incisors in both arches, suggesting that complete coverage restorations on molars represented a serious risk. No Dicor complete coverage restoration on lateral incisors failed during the study. Restorations failed less often in female than male subjects.
机译：问题陈述：没有关于Dicor玻璃陶瓷修复体在人口腔中的存活率以及不同技术和临床变量对存活率的影响的长期数据。目的：这项前瞻性研究检查了不同临床参数与Dicor玻璃陶瓷修复体在人口腔中的存活率之间的关系。材料与方法：共有417名受试者（17至91岁）参加了研究。所有受试者均需要在口腔的任何区域进行单一单位的修复修复和/或3单位固定的局部义齿或悬臂式前牙修复。他们可以选择金或常规的金属陶瓷修复体，或Dicor修复体，其美学效果可能得到改善，耐磨性更好，口腔斑块堆积减少。确定修复体的总体存活率，并使用Kaplan-Meier存活曲线评估各种临床参数的效果。使用对数秩检验确定参数之间的统计学显着差异。结果：对于放置的1444个单元，记录了188个故障。这些设备的总风险时间为7319年，估计每年风险为2.45％。 “典型”酸蚀Dicor和非酸蚀Dicor修复体在14.1年生存率分别为76％和50％（P <.001）。典型的酸蚀和非酸蚀的Dicor完全覆盖修复体的存活概率与完整数据集中观察到的几乎相同。使用非酸蚀的Dicor完全覆盖所导致的失败风险是酸蚀修复物的2.2倍（P <.01）。完全覆盖修复的存活率在门牙区域最高，而在两个牙弓中均下降至磨牙。第二磨牙显示出最高的失败率。在整个研究过程中，没有完全覆盖侧切牙的修复体失败。在男性受试者中，典型的酸蚀Dicor完全覆盖恢复的存活率在14.1年为71％，女性受试者为75％（P <.01）。主要差异似乎是由于雄性上颌弓的失败率更高。酸蚀Dicor完全覆盖修复体的幸存者功能对于<33岁，33至52岁和52岁年龄组分别为9岁时88％，14岁时62％和14岁时82％。结论：Dicor修复体可以在一定保留下随时间成功存活。当在诱饵之前对修复体进行酸蚀时，长期存活率显着提高。每年在两个拱门中，从臼齿到门齿的完全覆盖修复失败率下降，这表明在臼齿上的完全覆盖修复存在严重风险。在研究过程中，没有Dicor对侧切牙的完全覆盖修复失败。女性的恢复失败比男性的失败少。

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