Souza André B, Tormena Mariana, Matarazzo Flávia, Araújo Maurício G
Department of Dentistry, State University of Maringá, Maringá, Paraná, Brazil.
Clin Oral Implants Res. 2016 Jun;27(6):650-5. doi: 10.1111/clr.12703. Epub 2015 Oct 16.
The aim of this study was to compare the level of brushing discomfort (BD) during oral hygiene and peri-implant clinical variables between patients presenting implant sites with a band ≥2 mm and <2 mm of keratinized mucosa (KM).
Participating patients were recruited during routine maintenance follow-up visits from January to October 2013. Based on the presence of KM, patients were allocated into two groups: implant sites with ≥2 mm of KM (Wide Group); and implant sites with <2 mm of KM (Narrow Group). Patients were clinically assessed, and plaque index (PI), probing pocket depth (PPD), clinical attachment level (CAL), and bleeding on probing (BoP) data were collected from three sites at the buccal aspect of each implant. Subsequently, patients received standardized oral hygiene instructions and cleaning devices and were asked to clean around the experimental implant sites. All patients reported on the level of BD using the visual analog scale (VAS). Non-paired Student's t-test, Wilcoxon's signed-rank test, and chi-square tests were performed to analyze the outcome variables (P < 0.05).
Eighty patients with a total of 270 implant sites were included. Implant sites in the Narrow Group exhibited higher levels of BD (P < 0.001), PI (P = 0.0021), and BoP (P = 0.017) than implant sites in the Wide Group.
Implant sites with a band of <2 mm of KM were shown to be more prone to brushing discomfort, plaque accumulation, and peri-implant soft tissue inflammation when compared to implant sites with ≥2 mm of KM.
本研究旨在比较角化黏膜（KM）宽度≥2mm和<2mm的种植位点患者在口腔卫生期间的刷牙不适（BD）水平以及种植体周围临床变量。
2013年1月至10月在常规维护随访期间招募参与研究的患者。根据KM的存在情况，将患者分为两组：KM宽度≥2mm的种植位点（宽组）；KM宽度<2mm的种植位点（窄组）。对患者进行临床评估，并从每个种植体颊侧的三个位点收集菌斑指数（PI）、探诊袋深度（PPD）、临床附着水平（CAL）和探诊出血（BoP）数据。随后，患者接受标准化的口腔卫生指导和清洁装置，并被要求清洁实验种植位点周围。所有患者使用视觉模拟量表（VAS）报告BD水平。采用非配对学生t检验、威尔科克森符号秩检验和卡方检验分析结果变量（P<0.05）。
纳入80例患者，共270个种植位点。窄组的种植位点比宽组的种植位点表现出更高水平的BD（P<0.001）、PI（P=0.0021）和BoP（P=0.017）。
与KM宽度≥2mm的种植位点相比，KM宽度<2mm的种植位点更容易出现刷牙不适、菌斑堆积和种植体周围软组织炎症。
