下颌种植覆盖义齿：不同负载方案和附着体系统的修复体维护。

Mandibular two-implant overdentures: prosthodontic maintenance using different loading protocols and attachment systems.

出版信息

Int J Prosthodont. 2011 Sep-Oct;24(5):405-16.

PMID:21909481

Abstract

PURPOSE

The aim of this research was to determine the long-term prosthodontic maintenance requirements of mandibular two-implant overdentures using different loading protocols and attachment systems.

MATERIALS AND METHODS

A total of 106 participants were allocated randomly to one of four different implant systems (Steri-Oss, Southern, Straumann, or Branemark). Three different loading protocols (2, 6, and 12 weeks) were used with six different ball abutment patrices and their respective matrices (Steri-Oss rubber, Straumann gold, Straumann titanium, Branemark gold, Southern plastic, and Southern gold/platinum). Prosthodontic maintenance events were documented prospectively from baseline until the 8-year recall according to predefined categories.

RESULTS

After 6 years, 90 participants attended recall and, thereafter, 68 participants were followed for 8 years. No significant differences were found between the number of prosthodontic maintenance events and the loading protocol used. Steri-Oss rubber matrices had the highest mean number of maintenance events at 32.2 ± 14.5 events, followed by the Branemark gold matrices at 28.8 ± 12.6 events. The Southern plastic matrices had a significantly lower mean number of maintenance events (8.7 ± 4.2) when compared with all other groups. Over a 6-year period, the matrices with the best longevity were Straumann gold at 3.9 ± 2.1 years. Straumann gold matrices also lasted significantly longer than all other matrices (P < .05). Southern gold/platinum, Branemark gold, and Southern plastic matrices all lasted significantly longer than the Straumann titanium and Steri-Oss matrices (P < .05). The mean time to reline for overdentures was 3.37 ± 2.06 years; remaking of overdentures peaked by year 7, with a mean time to remake of 5.81 ± 2.04 years.

CONCLUSION

Early loading protocols do not influence long-term prosthodontic maintenance requirements of unsplinted mandibular two-implant overdentures. By contrast, attachment systems do influence prosthodontic maintenance, particularly with regard to the type of matrices used.

摘要

目的

本研究旨在确定使用不同负载方案和附着体系统的下颌 2 枚种植体覆盖义齿的长期修复体维护需求。

材料与方法

将 106 名参与者随机分配至 4 种不同种植体系统（Steri-Oss、Southern、Straumann 或 Branemark）之一。使用 3 种不同负载方案（2、6 和 12 周）和 6 种不同球基台衬垫及其相应基台（Steri-Oss 橡胶、Straumann 金、Straumann 钛、Branemark 金、Southern 塑料和 Southern 金/白金）。根据预设类别，从基线开始前瞻性记录修复体维护事件，直至 8 年随访。

结果

6 年后，90 名参与者接受了随访，之后对 68 名参与者进行了 8 年的随访。未发现负载方案使用与修复体维护事件数量之间存在显著差异。Steri-Oss 橡胶基台衬垫的平均维护事件数最高，为 32.2±14.5 次，其次是 Branemark 金基台衬垫，为 28.8±12.6 次。与其他所有组相比，Southern 塑料基台衬垫的平均维护事件数显著较低（8.7±4.2）。在 6 年期间，寿命最长的基台是 Straumann 金基台，为 3.9±2.1 年。Sraumann 金基台的使用寿命也显著长于所有其他基台（P＜0.05）。Southern 金/白金、Branemark 金和 Southern 塑料基台的使用寿命均显著长于 Straumann 钛基台和 Steri-Oss 基台（P＜0.05）。覆盖义齿重衬的平均时间为 3.37±2.06 年；覆盖义齿的修复高峰期出现在第 7 年，平均修复时间为 5.81±2.04 年。