Abstract:

Abstract：Objective To study the clinical effects of abutment teeth of magnetic attachment in patients with chronic periodontitis. Methods Nineteen patients were restored with removable partial dentures（RPD）with magnetic attachments，including forty-five abutment teeth of magnetic attachments. The periodontal probing depth（PD），mobility of abutment teeth and the stability of the dentures were observed after restoration for three to five years. SPSS 19.0 software package was used for statistical analysis. Results Retention rate of abutment teeth in these cases was 91.11% in three years. The PD of abutment teeth was（2.17 ± 0.77）mm before restoration and （1.89 ± 0.67）mm after three years，the latter being lower than the former（P < 0.05）. The mobility of abutment teeth increased in some cases，which may be because of the loss of stability of the removable partial dentures. Conclusion Magnetic attachment can protect weak abutment teeth in chronic periodontitis patients.

Key words: chronic periodontitis, magnetic attachment, removable partial denture, abutment tooth

摘要：

目的 了解慢性牙周炎患者磁性附着体基牙的牙周状况。方法 选取2009年1月至2011年1月于中国医科大学附属口腔医院口腔修复门诊接受治疗的19例慢性牙周炎患者的45颗磁性附着体基牙作为研究对象，修复后随访观察3年，比较磁性附着体基牙在义齿修复前后的牙周袋探诊深度（PD）、牙齿松动度及义齿的稳定性状况。结果 磁性附着体基牙在口内3年的存留率达91.11%。磁性附着体基牙在义齿修复前及修复3年后的PD值分别为（2.17 ± 0.77）mm和（1.89 ± 0.67）mm，修复后较修复前的PD值减小，差异有统计学意义（P < 0.05）。部分基牙松动度在义齿修复3年后较修复前增大，可能与可摘局部义齿功能稳定性变差有关（P < 0.05）。结论 磁性附着体义齿对慢性牙周炎患者的弱基牙有保护作用。

关键词: 慢性牙周炎, 磁性附着体, 可摘局部义齿, 基牙