Five-year clinical evaluation of zirconia-based bridges in patients in UK general dental practices
Five-year clinical evaluation of zirconia-based bridges in patients in UK general dental practices
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DOI：
10.1016/j.jdent.2013.08.007
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发表时间：
2013-11-01
影响因子：
4.4
通讯作者：
Tulloch, N.
中科院分区：
文献类型：
--
作者：
Burke, F. J. T.;Crisp, R. J.;Tulloch, N.
目的：本研究报告了5年固定-固定全陶瓷桥的结果，该桥采用氧化钇稳定的四方氧化锆多晶（Y-TZP）亚结构，放置在英国普通牙科诊所的成年患者中。材料和方法：四名英国全科牙科医生招募了需要固定桥架的患者，在获得知情的书面同意后，完成了适当的临床和放射学评估。牙齿和桥都是按照制造商的说明准备的。每个桥每年在其放置周年的3个月内由校准的审查员和放置修复的临床医生一起使用修改的USPHS标准进行检查。结果：在原放置的41个桥中，有33个在5年时进行了检查。所有Y-TZP框架完好无损，没有桥架脱落。在5年的时间里，我们发现了8例贴面陶瓷碎裂。在5个病例中，患者没有意识到这些，这些病例被抛光。在剩下的三个案例中，有一个修复尝试，但没有成功，但桥仍然令人满意的服务。然而，在涉及中切牙内切角碎裂的情况下，认为更换桥是必要的。结论：在英国普通牙科诊所评估的33例Lava Y-TZP固定-固定桥中，97% （n = 32）的效果令人满意。临床相关性：Y-TZP框架的使用具有前景。(C) 2013 Elsevier Ltd.版权所有。
Objectives: This study reported the results at 5 years of fixed-fixed all-ceramic bridges, constructed in a yttria oxide stabilized tetragonal zirconium oxide polycrystal (Y-TZP) substructure, placed in adult patients in UK general dental practices.Materials and methods: Four UK general dental practitioners recruited patients who required fixed bridgework and, after obtaining informed written consent, appropriate clinical and radiographic assessments were completed. The teeth were prepared and bridges constructed in accordance with the manufacturer's instructions. Each bridge was reviewed annually within 3 months of the anniversary of its placement by a calibrated examiner, together with the clinician who had placed the restoration, using modified USPHS criteria.Results: Of the 41 bridges originally placed, 33 bridges were examined at 5 years. All Y-TZP frameworks were intact and no bridge retainers had debonded. Eight chipping fractures in the veneering ceramic were noted over the 5-year period. In five cases the patients were unaware of these and these cases were polished. Of the remaining three cases, in one a repair was attempted but was unsuccessful, but the bridge remained in satisfactory service. However, in the case involving a chipping fracture of the mesial-incisal angle of a central incisor, it was considered that replacement of the bridge was necessary.Conclusion: 97% (n = 32) of the 33 Lava Y-TZP fixed-fixed bridges, evaluated in patients attending UK general dental practices, were found to be performing satisfactorily. Clinical relevance: The use of Y-TZP frameworks holds promise. (C) 2013 Elsevier Ltd. All rights reserved.