Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, Plattenstrasse 11, 8032, Zurich, Switzerland.
Dental department, King Faisal Hospital, Prince Muqrin St 1, 36361, Alhofuf, Saudi Arabia.
Sci Rep. 2020 May 13;10(1):7922. doi: 10.1038/s41598-020-64816-5.
This study aimed to investigate whether interdental brush shape influences cleaning efficacy, by comparing a waist-shaped interdental brush (W-IDB) with a cylindrical IDB (C-IDB); both provided with the same bristle texture. Cleaning efficacy of differently shaped IDBs was measured in proximal surfaces of teeth in a split-mouth cross-over design. Twenty-eight patients abolished oral hygiene for 4 d. Line angle plaque area was scanned with an intraoral camera after use of disclosing dye in baseline and after IDB application and analyzed planimetrically. Additionally, bacterial load in the IDBs was analyzed after usage by colony forming units (cfu). A Wilcoxon signed-rank test with continuity correction was used to compare the results of the waist-shaped and the cylindrically-shaped IDBs. The waist-shaped IDBs cleaned significantly better than their cylindrically-shaped counterparts (area cleaned: 23.1% vs. 18.3%), when applied at same interdental spaces (p < 0.001). However, no significant differences were found in comparison of bacterial load on the IDBs (median cfu counts: 2.3E9 vs. 2.7E9, p = 0.93). Irrespective of bristle texture or size, IDB shape have impact on cleaning efficacy. Waist-shaped IDBs are more effective in cleaning of the line angle area than cylindrically-shaped IDBs.
本研究旨在通过比较一种腰部形状的牙间刷（W-IDB）和一种圆柱形牙间刷（C-IDB），来研究牙间刷的形状是否会影响清洁效果；这两种牙间刷都具有相同的刷毛纹理。在一项分口交叉设计中，我们在牙齿的近中面测量了不同形状的牙间刷的清洁效果。28 名患者在 4 天内停止口腔卫生。使用牙间刷前后，使用显色剂后，使用口腔内摄像头扫描线角菌斑面积，并进行平面分析。此外，在使用后通过菌落形成单位（cfu）分析牙间刷上的细菌负荷。使用具有连续性校正的 Wilcoxon 符号秩检验比较腰部形状和圆柱形形状的牙间刷的结果。当应用于相同的牙间隙时，腰部形状的牙间刷的清洁效果明显优于圆柱形牙间刷（清洁面积：23.1%比 18.3%，p<0.001）。然而，在比较牙间刷上的细菌负荷时，没有发现显著差异（cfu 计数中位数：2.3E9 比 2.7E9，p=0.93）。无论刷毛纹理或大小如何，牙间刷的形状都会影响清洁效果。腰部形状的牙间刷在清洁线角区域方面比圆柱形牙间刷更有效。
