Colucci Vivian, Dos Santos Camila Demetrio, Do Amaral Flávia Lucisano Botelho, Corona Silmara Aparecida Milori, Catirse Alma Blásida Concepción Elizaur Benitez
Department of Operative Dentistry, Ribeirão Preto School of Dentistry, University of São Paulo, São Paulo, Brazil.
J Esthet Restor Dent. 2009;21(4):242-8. doi: 10.1111/j.1708-8240.2009.00269.x.
The regular use of mouthrinses, particularly when combined with the use of air-powder polishing, could affect the appearance of tooth-colored restorations. The current study sought to evaluate the effect of NaHCO(3) powder on translucency of a microfilled composite resin immersed in different mouthrinses, at distinct evaluation periods. Eighty disk-shaped specimens of composite resin (Durafill VS, Heraeus Kulzer GmbH & Co. KG, Hanau, Germany) were prepared. The composite specimens were then randomly allocated into two groups according to the surface treatment: exposure to NaHCO3 powder (10 seconds) or nonexposure, and they were randomly assigned into four subgroups, according to the mouthrinses employed (N = 10): Periogard (Colgate/Palmolive, São Bernardo do Campo, SP, Brazil), Cepacol (Aventis Pharma, São Paulo, SP, Brazil), Plax (Colgate/Palmolive), and distilled water (control group). The samples were immersed for 2 minutes daily, 5 days per week, over a 4-month test period. Translucency was measured with a transmission densitometer at seven evaluation periods. Statistical analyses (analysis of variance and Tukey's test) revealed that: distilled water presented higher translucency values (86.72%); Periogard demonstrated the lowest translucency values (72.70%); and Plax (74.05%) and Cepacol (73.32%) showed intermediate translucency values, which were statistically similar between them (p > 0.01). NaHCO3 air-powder polishing increased the changes in translucency associated with the mouthrinses. Air-powder polishing alone had no effect on material translucency. Translucency percent was gradually decreased from 1 week of immersion up to 4 months. It may be concluded that the NaHCO3 powder and the tested mouthrinses have affected the translucency of microfilled composite resin, according to the tested time.
During the last decade, the demand for composite resin restorations has grown considerably, however, controversy persists regarding the effect of surface roughness on color stability.
经常使用漱口水，尤其是与气粉抛光联合使用时，可能会影响牙齿颜色修复体的外观。本研究旨在评估碳酸氢钠粉末在不同评估时间段对浸泡于不同漱口水的微填料复合树脂透明度的影响。制备了80个复合树脂圆盘形试件（德国哈瑙贺利氏古莎有限公司的Durafill VS）。然后根据表面处理将复合试件随机分为两组：暴露于碳酸氢钠粉末（10秒）或不暴露，并根据所用漱口水随机分为四个亚组（每组n = 10）：Periogard（高露洁/棕榄公司，巴西圣保罗州圣贝尔纳多-杜坎普）、Cepacol（安万特制药公司，巴西圣保罗州圣保罗）、Plax（高露洁/棕榄公司）和蒸馏水（对照组）。在4个月的测试期内，样本每周浸泡5天，每天浸泡2分钟。在七个评估时间段用透射密度计测量透明度。统计分析（方差分析和Tukey检验）显示：蒸馏水呈现出较高的透明度值（86.72%）；Periogard的透明度值最低（72.70%）；Plax（74.05%）和Cepacol（73.32%）呈现出中间透明度值，二者在统计学上相似（p > 0.01）。碳酸氢钠气粉抛光增加了与漱口水相关的透明度变化。单独的气粉抛光对材料透明度没有影响。从浸泡1周直至4个月，透明度百分比逐渐降低。可以得出结论，根据测试时间，碳酸氢钠粉末和所测试的漱口水影响了微填料复合树脂的透明度。
在过去十年中，对复合树脂修复体的需求大幅增长，然而，关于表面粗糙度对颜色稳定性的影响仍存在争议。
