Isler Sila Cagri, Uraz Ahu, Kaymaz Ozlem, Cetiner Deniz
Int J Oral Maxillofac Implants. 2019 January/February;34(1):187–196. doi: 10.11607/jomi.6958. Epub 2018 Oct 3.
This cross-sectional study aimed to analyze the relation between peri-implant soft tissue biotype (STB) and different levels of peri-implantitis severity, and to identify the possible risk indicators that affect the severity of peri-implantitis with regard to STB around dental implants.
Eighty-seven patients with 229 implants were diagnosed with peri-implantitis and recruited to the study. Clinical and radiographic parameters including Plaque Index (PI), probing depth (PD), bleeding on probing (BOP), gingival/mucosal recession (GR/MR), clinical attachment level (CAL), and marginal bone loss (BL) were analyzed. The periodontal status was assessed, and the levels of peri-implantitis severity were defined. These parameters were compared among the peri-implant STB groups (thick and thin biotype). To evaluate the effect of possible risk indicators on the levels of severity of peri-implantitis, univariate and multivariate logistic regression analyses were conducted for thick and thin biotype groups.
The mean values of BOP, MR, CAL, and marginal BL were significantly lower for the thick group compared with the thin group (P < .05). For PI and PD values, no significant differences were found between the groups (P > .05). Moreover, multivariate analysis revealed statistically significant associations between peri-implantitis severity and the risk indicators maintenance therapy compliance and current periodontitis for the thin group (P < .05).
The thin biotype could be more prone to increase in the severity of peri-implantitis. Maintenance therapy compliance and current periodontitis could be important risk indicators that affect the progression of the severity of peri-implantitis for implants where keratinized mucosa is thin or absent.
本横断面研究旨在分析种植体周围软组织生物型（STB）与不同程度的种植体周炎严重程度之间的关系，并确定影响种植体周围种植体周炎严重程度的可能风险指标。
招募87例患者，共229颗种植体被诊断为种植体周炎并纳入研究。分析临床和影像学参数，包括菌斑指数（PI）、探诊深度（PD）、探诊出血（BOP）、牙龈/黏膜退缩（GR/MR）、临床附着水平（CAL）和边缘骨吸收（BL）。评估牙周状况，定义种植体周炎严重程度等级。在种植体周围STB组（厚生物型和薄生物型）之间比较这些参数。为了评估可能的风险指标对种植体周炎严重程度等级的影响，对厚生物型组和薄生物型组进行单因素和多因素逻辑回归分析。
厚生物型组的BOP、MR、CAL和边缘BL的平均值显著低于薄生物型组（P < 0.05）。对于PI和PD值，两组之间未发现显著差异（P > 0.05）。此外，多因素分析显示，薄生物型组的种植体周炎严重程度与风险指标维持治疗依从性和当前牙周炎之间存在统计学显著关联（P < 0.05）。
薄生物型可能更容易导致种植体周炎严重程度增加。维持治疗依从性和当前牙周炎可能是影响角化黏膜薄或缺失的种植体周围种植体周炎严重程度进展的重要风险指标。
