Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo, Ribeirão Preto, Brazil.
J Prosthodont. 2010 Jul;19(5):369-73. doi: 10.1111/j.1532-849X.2010.00592.x. Epub 2010 Apr 23.
This study analyzed the surface roughness and weight loss in Plex Glass specimens caused by dentifrices, one conventional (Sorriso) and three specific for dentures.
Specimens (n = 6) of Plex Glass were divided into 5 groups including: negative control (water); positive control 1 (Sorriso) and 2 (Corega Brite); Experimental 1 (containing Chloramine T, antimicrobial agent); and Experimental 2 (containing Zonyl, detergent). Brushing was performed in a toothbrushing machine (Pepsodent) with a soft brush and a suspension of toothpaste and distilled water for 300 minutes, representing 6 years of brushing. Weight was measured initially and after the trial period; roughness was measured after the trial period only. The results of roughness and weight loss were analyzed using ANOVA and Tukey tests at 5%.
The negative control (2.82 +/- 4.41 mg) showed the lowest weight loss. Experimental 1 (13.62 +/- 4.29 mg) and Experimental 2 (15.4 +/- 5.80 mg) were equal statistically, and Sorriso (23.22 +/- 7.23 mg) and Corega (28.83 +/- 6.34 mg) produced the greatest weight loss. Concerning roughness, the negative control group (0.03 +/- 0.01 microm) showed the lowest value. No significant differences were found between Corega (13.43 +/- 1.65 microm), Experimental 1 (12.28 +/- 0.85 microm), and Experimental 2 (10.68 +/- 2.56 microm). The Sorriso toothpaste produced the greatest amount of surface roughness (19.15 +/- 2.36 microm).
Of the tested dentifrices, the experimental preparations proved to be the least abrasive and resulted in the lowest weight loss after brushing of the acrylic. Based on these findings, the use of these experimental dentifrices is advocated. Further evaluation based on the ability of these preparations to remove biofilms is required.
本研究分析了由牙膏引起的 plex 玻璃标本的表面粗糙度和重量损失，其中一种是常规牙膏（Sorriso），三种是专门针对假牙的牙膏。
将 plex 玻璃标本（n=6）分为 5 组，包括：阴性对照组（水）；阳性对照组 1（Corega Brite）和 2（Sorriso）；实验组 1（含氯胺 T，抗菌剂）；实验组 2（含 Zonyl，清洁剂）。使用软毛牙刷和牙膏和蒸馏水的悬浮液在牙齿刷洗机（Pepsodent）中进行刷洗，持续 300 分钟，模拟 6 年的刷牙。在试验前和试验后分别测量重量；仅在试验后测量粗糙度。使用 ANOVA 和 Tukey 检验在 5%水平下分析粗糙度和重量损失的结果。
阴性对照组（2.82+/-4.41mg）显示出最低的重量损失。实验组 1（13.62+/-4.29mg）和实验组 2（15.4+/-5.80mg）在统计学上相等，而 Sorriso（23.22+/-7.23mg）和 Corega（28.83+/-6.34mg）则产生了最大的重量损失。关于粗糙度，阴性对照组（0.03+/-0.01μm）显示出最低值。Corega（13.43+/-1.65μm）、实验组 1（12.28+/-0.85μm）和实验组 2（10.68+/-2.56μm）之间无显著差异。Sorriso 牙膏产生的表面粗糙度最大（19.15+/-2.36μm）。
在所测试的牙膏中，实验制剂被证明是最不具磨损性的，并且在用丙烯酸刷牙后导致的重量损失最小。基于这些发现，提倡使用这些实验性牙膏。需要进一步评估这些制剂去除生物膜的能力。
