氧化锆陶瓷嵌体固位的固定义齿修复体——一种新型设计的初步临床结果。

Zirconia ceramic inlay-retained fixed dental prostheses - first clinical results with a new design.

机构信息

Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts-University at Kiel, Arnold-Heller-Str. 16, 24105 Kiel, Germany.

出版信息

J Dent. 2011 Mar;39(3):208-11. doi: 10.1016/j.jdent.2010.12.005. Epub 2010 Dec 24.

DOI:10.1016/j.jdent.2010.12.005

PMID:21185905

Abstract

OBJECTIVES

The purpose of this prospective study was to evaluate the clinical outcome of inlay-retained fixed dental prostheses (IRFDPs) with a new design made from a zirconia ceramic.

METHODS

Twenty-three 3-unit IRFDPs were placed in 23 patients, restoring five second premolars and 18 first molars. Preparations were performed in accordance with general principles for ceramic inlay restorations and modified with a retainer-wing bevel preparation in the enamel at the buccal and oral sides. The frameworks were scanned and milled out of zirconia ceramic, using the InLab CAD/CAM-system and the pontics were veneered with feldspathic ceramic. All IRFDPs were luted adhesively with composite resin. Clinical follow-up examinations were performed annually. Statistical analysis was performed using descriptive statistics and Kaplan-Meier survival analysis.

RESULTS

All patients with their 23 IRFDPs could be examined clinically after a mean observation time of 20 months. None of the IRFDPs failed. Two ceramic veneers fractured, both of them needed repair. One restoration debonded, but was recemented immediately. However, these technical complications did not affect the clinical function of the IRFDPs involved.

CONCLUSIONS

The clinical outcome of zirconia ceramic IRFDPs with the modified design seems promising.

摘要

目的

本前瞻性研究旨在评估一种新型氧化锆陶瓷制成的嵌体固位型固定修复体（IRFDP）的临床效果。

方法

将 23 个 3 单位 IRFDP 放置在 23 名患者中，修复 5 个第二前磨牙和 18 个第一磨牙。根据陶瓷嵌体修复的一般原则进行预备，并在颊侧和舌侧釉质处用固位翼斜面预备进行改良。使用 InLab CAD/CAM 系统扫描并加工出氧化锆陶瓷框架，然后用长石质陶瓷对桥体进行贴面。所有 IRFDP 均用复合树脂进行粘接固位。每年进行临床随访检查。采用描述性统计和 Kaplan-Meier 生存分析进行统计学分析。