Munakata Motohiro, Suzuki Akihiro, Yamaguchi Kikue, Kataoka Yu, Sanda Minoru
Department of Implant Dentistry, Showa University School of Dentistry, Tokyo, Japan.
Department of Oral Implantology and Regenerative Dental Medicine, Graduate School of Tokyo Medical and Dental University, Tokyo, Japan.
J Dent Sci. 2022 Apr;17(2):891-896. doi: 10.1016/j.jds.2021.08.018. Epub 2021 Sep 14.
BACKGROUND/PURPOSE: Although several mechanical and chemical debridement techniques have been reported for the management of peri-implantitis, there is no consensus on the most effective method at present. This study aimed to examine the effects of different mechanical instrumentation techniques on the debridement of hard calcified materials, which are present on the implant surface, as well as the effect of the defect morphology.
From a total of 15 implants, five each were assigned to one of three decontamination groups (Rotary titanium brush [Ti], tricalcium phosphate air powder abrasive treatment [Air], and titanium ultrasonic scaler [US] groups); the exposed hydroxyapatite (HA)-coated portion was divided into three 1-mm sections (coronal, middle, and apical). The residual-HA of each portion was measured using a digital microscope.
The overall percentage of residual HA coating was significantly lower in the US group than in the Ti or Air groups ( < 0.01). The percentage of residual HA in the coronal portion was significantly lower in the Ti and US groups than in the Air group ( < 0.05 and < 0.01, respectively). The percentage of residual HA in the middle portion was significantly lower in the US group than in the Air group ( < 0.01). The percentage of residual HA in the apical portion was significantly lower in the Ti group than in the Air or US groups ( < 0.01).
Ti and US were more effective for shallow defects, whereas US was more effective for deeper defects.
背景/目的：尽管已有多种机械和化学清创技术用于种植体周围炎的治疗，但目前对于最有效的方法尚无共识。本研究旨在探讨不同机械器械技术对种植体表面硬钙化物质清创的效果以及缺损形态的影响。
从总共15颗种植体中，每组5颗分别分配到三个去污组之一（旋转钛刷[Ti]组、磷酸三钙气粉研磨处理[Air]组和钛超声洁治器[US]组）；将暴露的羟基磷灰石（HA）涂层部分分为三个1毫米的节段（冠部、中部和根尖部）。使用数字显微镜测量每个部分的残余HA。
US组残余HA涂层的总体百分比显著低于Ti组或Air组（P<0.01）。Ti组和US组冠部的残余HA百分比显著低于Air组（分别为P<0.05和P<0.01）。US组中部的残余HA百分比显著低于Air组（P<0.01）。Ti组根尖部的残余HA百分比显著低于Air组或US组（P<0.01）。
Ti和US对浅缺损更有效，而US对深缺损更有效。
