Retrospective investigation of the remaining teeth status of patients with implant-supported fixed partial dentures in unilateral free-end edentulism
Retrospective investigation of the remaining teeth status of patients with implant-supported fixed partial dentures in unilateral free-end edentulism
复制标题
单侧游离端无牙颌种植体支持固定局部义齿患者剩余牙状态的回顾性调查
DOI：
10.1016/j.jpor.2013.08.001
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发表时间：
2013
影响因子：
3.6
通讯作者：
Kuboki T
中科院分区：
文献类型：
--
作者：
Yamazaki S;Arakawa H;Maekawa K;Hara ES;Noda K;Minakuchi H;Sonoyama W;Matsuka Y ;Kuboki T
目的：本研究旨在比较单侧游离端缺牙患者种植固定义齿（IFDs）、可摘局部义齿（RPDs）和无修复（NR）的各种无并发症率和剩余牙存活率。材料和方法：研究对象是在冈山大学牙科医院接受修复治疗的单侧游离端缺牙患者（2或3颗牙齿缺失）。IFD组33例，RPD组41例，NR组10例。剩余牙列根据缺失部分分为5个亚类：缺失部分的相邻牙（AD）、同颌对侧后牙列（CS）和对颌对侧后牙列（CO）、同侧对侧后牙列（IO）和前牙列（AN）。并发症被定义为拔牙，牙周病变，根尖周病变或保留的假体的损失，并进行了评估，由一个考官根据医院的图表records.Results：在剩余的牙齿累积并发症的无率之间的三个组中的每一个有显着差异（p< 0.01），与IFD组的发病率显着降低。关于剩余牙齿的累积存活率，IFD和NR组之间仅存在显著差异（p= 0.01），尤其是在CO区域（p= 0.04）。结论：通过减少不利的机械应力，IFD治疗单侧游离端缺牙获得稳定的后牙咬合支持可能会降低剩余牙齿的并发症发生率。
Purpose: This study aimed to compare the various complication-free rates and survival rates of remaining teeth among implant-supported fixed dentures (IFDs), removable partial dentures (RPDs) and no-restoration (NR) patients with unilateral free-end edentulism.Material and methods: The study subjects were selected among those who received prosthodontic treatment at Okayama University Dental Hospital for their unilateral free-end edentulism (2 or 3 missing teeth). Thirty-three patients were included in the IFD group, 41 matched patients in the RPD group, and 10 patients who received RPDs but refused their use were regarded as NR group. The remaining dentition was classified into five subcategories in relation to the missing portion: adjacent teeth to the missing portion (AD), contralateral posterior dentition in the same jaw (CS) and in the opposite jaw (CO), ipsilateral opposing posterior dentition (IO), and anterior dentition (AN). Complications were defined as tooth extraction, periodontal lesions, periapical lesions or loss of retention of the prosthesis and were assessed by one examiner based on the hospital chart records.Results: The cumulative complication-free rates in the remaining teeth were significantly different among each of the three groups (p< 0.01), with a significantly lower incidence rate in the IFD group. Regarding the cumulative survival rate of the remaining teeth, there was a significant difference only between IFD and NR group (p= 0.01), especially in the CO region (p= 0.04).Conclusions: Stable posterior occlusal support obtained with IFD treatment for unilateral free-end edentulism may reduce the incidence of complications in the remaining teeth, by decreasing the adverse mechanical stress.