义齿清洁剂对具有不同光学特性的弹性衬垫的影响。

Denture cleanser effect on resilient liners with distinct optical characteristics.

作者信息

Coelho Isabella R P, Silva-Lovato Cláudia H, Arruda Carolina N F, Münchow Eliseu A, Silveira Gabriella R C, Carvalho Rodrigo F, Badaró Mauricio M

机构信息

Department of Dentistry, Federal University of Juiz de Fora, Governador Valadares Campus (UFJF/GV), Governador Valadares, Minas Gerais, Brazil.

Department of Dental Materials and Prosthodontics, School of Dentistry of Ribeirao Preto, University of São Paulo (USP), Ribeirao Preto, São Paulo, Brazil.

出版信息

Am J Dent. 2023 Apr;36(2):62-68.

PMID:37076294

Abstract

PURPOSE

To evaluate denture cleansing solutions regarding the surface roughness and color stability of two resilient liners with distinct optical characteristics used for the maximum recommended period of use.

METHODS

The specimens of each resilient liner, transparent and white, were randomly distributed into groups (n= 15) of a daily 20-minute immersion simulation of 0.25%, 0.5% and 1% sodium hypochlorite (SH) and 4% acetic acid solutions. Surface roughness (Ra) and color stability (ΔE CIELab formula and NBS systems) were measured after 7, 14, 21, 30, 60, 90, 180, and 270 days. The factors of variations analyzed were material, solutions, and time of immersion. Statistical analysis used three-way ANOVA and Tukey tests (Ra), and repeated measure ANOVA (ΔE and NBS systems), P< 0.05.

RESULTS

For Ra analysis, the variations occurred regardless of time and solution, as the white liner showed the greatest changes (P< 0.001). Regarding interactions between solution and time, in the period of 21 days until 270 days, Ra was equivalent for all solutions (P= 0.001). ΔE analysis showed a difference between solutions (P= 0.000) and interaction between time and solution (P= 0.000). For the transparent liner, the greatest changes were found for 1% SH after 60 days, however, at 270 days there was a color change equivalence with 0.5% SH, while 4% acetic acid solution showed intermediate values. For the white liner, 1% SH showed the highest color changes for all evaluated times, and the other evaluated solutions were similar after 270 days. For both resilient liners, 0.25% SH showed the smallest changes for the evaluated properties.

CLINICAL SIGNIFICANCE

The changes found were dependent on the concentration of the solution used, as well as the length of exposure to the solution. In addition, the white resilient liner showed to be less susceptible to color changes. For both resilient liners, 0.25% sodium hypochlorite showed the least changes for the evaluated properties.

摘要

目的

评估义齿清洁溶液对两种具有不同光学特性的弹性衬垫在最大推荐使用期内的表面粗糙度和颜色稳定性的影响。

方法

将透明和白色的每种弹性衬垫样本随机分为几组（n = 15），分别每日模拟浸泡在0.25%、0.5%和1%的次氯酸钠（SH）以及4%的醋酸溶液中20分钟。在7、14、21、30、60、90、180和270天后测量表面粗糙度（Ra）和颜色稳定性（ΔE CIELab公式和NBS系统）。分析的变异因素包括材料、溶液和浸泡时间。统计分析采用三因素方差分析和Tukey检验（Ra），以及重复测量方差分析（ΔE和NBS系统），P < 0.05。

结果

对于Ra分析，无论时间和溶液如何，均会出现变化，因为白色衬垫的变化最大（P < 0.001）。关于溶液和时间之间的相互作用，在21天至270天期间，所有溶液的Ra值相当（P = 0.001）。ΔE分析显示溶液之间存在差异（P = 0.000）以及时间和溶液之间存在相互作用（P = 0.000）。对于透明衬垫，60天后1%的SH变化最大，但在270天时与0.5%的SH颜色变化相当，而4%的醋酸溶液显示出中间值。对于白色衬垫，在所有评估时间内1%的SH颜色变化最大，在270天后其他评估溶液相似。对于两种弹性衬垫，0.25%的SH在所评估的性能方面变化最小。