A retrospective comparative ten-year study of cumulative survival rates of remaining teeth in large edentulism treated with implant-supported fixed partial dentures or removable partial dentures
A retrospective comparative ten-year study of cumulative survival rates of remaining teeth in large edentulism treated with implant-supported fixed partial dentures or removable partial dentures
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DOI：
10.1016/j.jpor.2013.03.003
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发表时间：
2013-07-01
影响因子：
3.6
通讯作者：
Kuboki, Takuo
中科院分区：
文献类型：
--
作者：
Yamazaki, Seiya;Arakawa, Hikaru;Kuboki, Takuo
目的：比较种植固定义齿（IFDs）和可摘局部义齿（rpd）在大无牙患者中剩余牙的存活率。第二个目标是评估剩余牙齿脱落的危险因素。材料与方法：研究对象选自在冈山大学口腔医院接受无牙间隙连续缺失至少四颗牙齿修复治疗的患者。IFD组21例，RPD组82例。剩余牙的存活率分为三个子类：(1)完整剩余牙，(2)与预定无牙间隙相邻的牙齿，(3)与预定无牙间隙相反的牙齿。结果：IFD组全牙10年累积成活率（40.0%）明显高于RPD组（24.4%）。另一方面，两组牙的成活率在牙位临近或相反方面无显著差异。Cox比例风险分析显示，RPD修复和性别（男性）是剩余牙齿脱落（全剩余牙齿）的重要危险因素。结论：IFD治疗可降低大面积无牙患者残牙脱落的发生率。2013年日本口腔修复学会。由爱思唯尔爱尔兰出版。版权所有。
Purpose: This study aimed to compare the survival rates of remaining teeth between implant-supported fixed dentures (IFDs) and removable partial dentures (RPDs) in patients with large edentulous cases. The second goal was to assess the risk factors for remaining tooth loss. Materials and methods: The study subjects were selected among those who received prosthodontic treatment at Okayama University Dental Hospital for their edentulous space exceeding at least four continuous missing teeth. Twenty-one patients were included in the IFD group and 82 patients were included in the RPD group. Survival rates of remaining teeth were calculated in three subcategories: (1) whole remaining teeth, (2) adjacent teeth to intended edentulous space, and (3) opposing teeth to intended edentulous space. Results: The ten-year cumulative survival rate of the whole remaining teeth was significantly higher in the IFD group (40.0%) than in the RPD group (24.4%). On the other hand, there was no significant difference between two groups in the survival rate of teeth adjacent or opposing to intended edentulous space. A Cox proportional hazard analysis revealed that RPD restoration and gender (male) were the significant risk factors for remaining tooth loss (whole remaining teeth). Conclusions: These results suggest that IFD treatment can reduce the incidence of remaining tooth loss in large edentulous cases. 2013 Japan Prosthodontic Society. Published by Elsevier Ireland. All rights reserved.