Menini Maria, Setti Paolo, Pera Paolo, Pera Francesco, Pesce Paolo
Int J Prosthodont. 2018 Jul/Aug;31(4):327-333. doi: 10.11607/ijp.5567.
To evaluate plaque accumulation, peri-implant soft tissue inflammation, and bone resorption in patients with immediately loaded implants supporting fixed full-arch prostheses.
A convenience sample of 72 patients treated with fixed full-arch prostheses supported by four to six immediately loaded implants was selected. Bleeding on probing (BOP), Plaque Index (PI), and peri-implant bone loss were measured. The Sixth European Workshop on Periodontology definitions of mucositis and peri-implantitis were used, and collected data were analyzed using a nonparametric test (Spearman's rank correlation). Correlation coefficients (ρ) were defined as follows: < 0.2 = very weak; 0.2 to 0.39 = weak; 0.4 to 0.59 = moderate; 0.6 to 0.79 = strong; 0.8 to 1.0 = very strong.
A total of 331 implants were analyzed. The mean follow-up observation time was 5.8 years (range: 1 to 14 years); mean PI and BOP were 61.7% and 21.1%, respectively; and mean bone loss was 0.89 mm (standard deviation [SD] 1.09). The mean probing depth was 1.8 mm (range: 0.5 to 5 mm). Five patients presented with one implant each affected by peri-implantitis (6.9%), and 15 patients presented with at least one implant affected by mucositis (20.8%). No correlation was found between PI and bone resorption (P = .08). Very weak correlations were found between BOP and bone resorption (ρ = 0.18; P = .001) and between PI and BOP (ρ = 0.13, P = .019).
The results suggest that plaque accumulation is correlated with peri-implant mucositis; however, plaque accumulation alone does not appear to be associated with bone resorption.
评估即刻负重种植体支持固定全牙弓修复体患者的菌斑堆积、种植体周围软组织炎症和骨吸收情况。
选取72例接受由4至6枚即刻负重种植体支持的固定全牙弓修复体治疗的患者作为便利样本。测量探诊出血（BOP）、菌斑指数（PI）和种植体周围骨丢失情况。采用第六届欧洲牙周病学研讨会关于黏膜炎和种植体周围炎的定义，并使用非参数检验（Spearman等级相关性分析）对收集的数据进行分析。相关系数（ρ）定义如下：<0.2 = 非常弱；0.2至0.39 = 弱；0.4至0.59 = 中等；0.6至0.79 = 强；0.8至1.0 = 非常强。
共分析331枚种植体。平均随访观察时间为5.8年（范围：1至14年）；平均PI和BOP分别为61.7%和21.1%；平均骨丢失为0.89 mm（标准差[SD] 1.09）。平均探诊深度为1.8 mm（范围：0.5至5 mm）。5例患者各有1枚种植体发生种植体周围炎（6.9%），15例患者至少有1枚种植体发生黏膜炎（20.8%）。未发现PI与骨吸收之间存在相关性（P = 0.08）。发现BOP与骨吸收之间存在非常弱的相关性（ρ = 0.18；P = 0.001），PI与BOP之间也存在非常弱的相关性（ρ = 0.13，P = 0.019）。
结果表明，菌斑堆积与种植体周围黏膜炎相关；然而，单独的菌斑堆积似乎与骨吸收无关。
