Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany.
J Oral Rehabil. 2009 Aug;36(8):610-5. doi: 10.1111/j.1365-2842.2009.01969.x. Epub 2009 Jun 2.
The purpose of this prospective cohort study was to assess the performance of tooth-supported, extended zirconia, fixed dental prostheses (FDPs). Thirty FDPs with span-lengths between 36 and 46 mm (mean: 40.33 mm), four to seven units and with connector dimensions of approximately 9 mm(2) were inserted (19 in the posterior region, 11 including anterior teeth) using glass-ionomer cement and assessed (aesthetic evaluation, failures, hypersensitivity/tooth vitality, secondary caries, pocket depth, decementation and chipping) at baseline and after 2 years. Differences between baseline and 2-year recall were analysed using the Wilcoxon signed-rank test for matched pairs. There were five failures. One FDP revealed a core fracture at the base of the connector, probably caused by a damage induced during fabrication. Two FDPs had to be recemented, one abutment tooth had to be treated endodontically and one cohesive failure of the veneer was observed. There were no significant changes of pocket depth and hypersensitivity between baseline and 2-year recall. The aesthetics were rated as excellent by the patients at both baseline and recall. Two year clinical results of extended zirconia based FDPs with 9 mm(2) connectors are promising.
本前瞻性队列研究旨在评估牙支持的、扩展氧化锆固定修复体（FDP）的性能。共植入 30 个跨度长度在 36-46mm 之间（平均 40.33mm）、4-7 个单位、连接器尺寸约为 9mm(2)的 FDP（19 个在后牙区，11 个包括前牙），使用玻璃离子水门汀，在基线和 2 年后进行评估（美学评估、失败、过敏/牙髓活力、继发龋、探诊深度、脱粘和崩瓷）。使用配对符号秩和检验分析基线和 2 年随访之间的差异。有 5 个失败。一个 FDP 在连接器底部出现基底骨折，可能是在制作过程中受到损伤引起的。有两个 FDP 需要重新粘固，一个基牙需要进行根管治疗，一个贴面发生了黏合失败。在基线和 2 年随访之间，探诊深度和过敏没有明显变化。患者在基线和随访时都将美学评为优秀。9mm(2)连接器的扩展氧化锆基 FDP 在 2 年后的临床结果很有前景。
