Division of Periodontology and Implantology, Department of Biomedical and Neuromotor Sciences, School of Dentistry and Dental Hygiene, University of Bologna, Bologna, Italy.
Department of Biomedical and Neuromotor Sciences, School of Dentistry and Dental Hygiene, University of Bologna, Bologna, Italy.
Int J Dent Hyg. 2024 May;22(2):465-470. doi: 10.1111/idh.12751. Epub 2023 Sep 18.
The aim of this preclinical study was to compare the ability of tapered and cylindrical bristles to penetrate the peri-implant sulcus.
A full mandibular dental arch was reproduced in plaster cast. In site #3.6 a hollow glass cylinder was positioned simulating a 4 mm diameter implant and the gingival component was recreated by using dedicated silicone. A Bass brushing technique was performed from the vestibular side in humid environment. During it, the penetration of the bristles between the gum and the implant was recorded by mean of an optic fibre fixed inside the cylinder. The protocol included 5 toothbrushes per group and 10 tests per toothbrush, for a total of 50 assessments for each of the two groups. A scale of 5 grades for bristle penetration was defined: grade 0 (× < 2 mm), grade 1 (2 ≤ × < 3 mm), grade 2 (3 ≤ × < 4 mm), grade 3 (4 ≤ × < 5 mm) and grade 4 (5 ≤ × < 8 mm). From the video recordings the highest value of penetration was identified for each test.
The tapered bristles showed an 8 times greater penetration capacity (p = 0.001) in respect to the cylindrical bristles (multilevel analysis). The percentage of tests reaching depths ≥3 mm was 86% for tapered group and 28% for the cylindrical group.
This preclinical study shows a clear and superior penetration capacity of the tapered bristles in respect to traditional cylindrical ones. For tapered bristles, a potentially greater hygienic efficacy around dental implants is suggested.
本临床前研究旨在比较渐缩形和圆柱形刷毛穿透牙周袋的能力。
用石膏铸型复制全下颌牙弓。在#3.6 位点，放置一个空心玻璃圆柱体模拟 4mm 直径的种植体，并用专用硅橡胶重建牙龈部分。在潮湿环境中，采用 Bass 刷牙法从颊侧进行刷牙。在此过程中，通过固定在圆柱体内部的光纤记录刷毛在牙龈和种植体之间的穿透情况。该方案包括每组 5 支牙刷，每支牙刷进行 10 次测试，每组共进行 50 次评估。刷毛穿透程度分为 5 个等级：0 级（× < 2mm）、1 级（2 ≤ × < 3mm）、2 级（3 ≤ × < 4mm）、3 级（4 ≤ × < 5mm）和 4 级（5 ≤ × < 8mm）。从视频记录中确定每次测试的最大穿透值。
与圆柱形刷毛相比，渐缩形刷毛的穿透能力高出 8 倍（p = 0.001）（多水平分析）。达到深度≥3mm 的测试比例，渐缩形组为 86%，圆柱形组为 28%。
本临床前研究表明，渐缩形刷毛在穿透能力方面明显优于传统的圆柱形刷毛。对于渐缩形刷毛，提示其在牙种植体周围具有更大的潜在清洁效果。
