de Sousa Porta Sheila Rodrigues, de Lucena-Ferreira Sílvia Carneiro, da Silva Wander José, Del Bel Cury Altair Antoninha
Department of Prosthodontics and Periodontology, Piracicaba Dental School, State University of Campinas - UNICAMP, Piracicaba, Sao Paulo, Brazil.
University CEUMA, Sao Luis, Maranhao, Brazil.
Gerodontology. 2015 Dec;32(4):260-6. doi: 10.1111/ger.12104. Epub 2013 Dec 12.
To evaluate the effect of sodium hypochlorite (NaOCl) on biofilms, colour stability (ΔE) and surface roughness (Ra) of complete dentures and patient acceptability.
Denture cleansers should be able to reduce the accumulation of biofilms without affecting the acrylic resin properties. Patient satisfaction is important to maintaining their daily use.
Fifteen participants were instructed to keep their dentures immersed daily in a 0.5% NaOCl solution for 3 min over 90 days. Swabs were taken from dentures and inoculated on CHROMagar and blood agar. The number of colony-forming units (cfu) was counted after a 48-h incubation period. ΔE was assessed using the CIE Lab* system. Ra was measured using a profilometer. Patient acceptability was checked based on their degree of satisfaction. Cell counts, ΔE and Ra were analysed using anova, Friedman's and Kruskal-Wallis tests, respectively (α = 0.05).
A significant reduction in the total number of microorganisms (p = 0.001) and Candida spp. was noticed. No significant differences were found for ΔE (p = 0.68) and for Ra (p = 0.47). The level of the patient satisfaction increased throughout the follow-up period.
The 0.5% NaOCl solution was effective in reducing microorganisms without significant changes in colour or roughness of denture resin. The participants reported satisfaction with the cleaning results.
评估次氯酸钠（NaOCl）对全口义齿生物膜、颜色稳定性（ΔE）、表面粗糙度（Ra）的影响以及患者的接受程度。
义齿清洁剂应能够减少生物膜的积聚，同时不影响丙烯酸树脂性能。患者满意度对于维持义齿的日常使用很重要。
15名参与者被要求在90天内每天将义齿浸泡在0.5%的NaOCl溶液中3分钟。从义齿上取样并接种在CHROMagar和血琼脂上。在48小时的培养期后计算菌落形成单位（cfu）的数量。使用CIE Lab*系统评估ΔE。使用轮廓仪测量Ra。根据患者的满意度检查患者的接受程度。分别使用方差分析、弗里德曼检验和克鲁斯卡尔-沃利斯检验分析细胞计数、ΔE和Ra（α = 0.05）。
发现微生物总数（p = 0.001）和念珠菌属显著减少。在ΔE（p = 0.68）和Ra（p = 0.47）方面未发现显著差异。在整个随访期间患者满意度水平有所提高。
0.5%的NaOCl溶液可有效减少微生物，且义齿树脂的颜色和粗糙度无显著变化。参与者对清洁效果表示满意。
