Department of Dental Materials and Prosthodontics, São Paulo University, Ribeirão Preto Dental School, São Paulo, Brazil.
Gerodontology. 2012 Jun;29(2):e179-85. doi: 10.1111/j.1741-2358.2010.00438.x. Epub 2010 Nov 17.
This study evaluated colour stability, hardness and roughness of soft denture liners after immersion in various cleansers.
Thirty specimens (14 mm × 4 mm) of Elite Soft Relining (ES) and Mucopren Soft (MS) were randomly immersed in distilled water at 37°C, sodium hypochlorite 1%, and an experimental Ricinus communis solution (RC) for 7, 15 and 183 continuous days.
anova (p < 0.05) and Tukey's test indicated that after T7 (μ =8.79 ± 7.36); T15 (μ = 4.23 ± 2.62) and T183 (μ = 8.78 ± 3.16), MS presented a higher increase in hardness than ES. After T7, MS underwent an increase in roughness (μ = 0.09 ± 0.80); ES underwent a decrease (μ = -0.08 ± 0.16). RC caused the smallest variation in roughness. After T15, both materials presented an increase in roughness. After T183, ES (μ = -0.30 ± 0.48) presented a higher roughness variation than MS (μ = -0.07 ± 0.32). Hypochlorite caused an increase in roughness (μ = 0.02 ± 0.19).
After all periods ES presented higher colour alteration than MS; highest colour alteration was caused by hypochlorite. Both materials were more stable after immersion in RC.
本研究评估了在不同清洁剂中浸泡后软义齿衬里的颜色稳定性、硬度和粗糙度。
将 30 个 Elite Soft Relining（ES）和 Mucopren Soft（MS）试件（14mm×4mm）随机浸入 37°C 的蒸馏水中、1%次氯酸钠和实验性蓖麻 Communis 溶液（RC）中，分别浸泡 7、15 和 183 天。
方差分析（p＜0.05）和 Tukey 检验表明，在 T7（μ=8.79±7.36）；T15（μ=4.23±2.62）和 T183（μ=8.78±3.16）后，MS 的硬度增加高于 ES。在 T7 后，MS 的粗糙度增加（μ=0.09±0.80）；ES 减少（μ=-0.08±0.16）。RC 导致粗糙度变化最小。在 T15 之后，两种材料的粗糙度都增加了。在 T183 后，ES（μ=-0.30±0.48）的粗糙度变化高于 MS（μ=-0.07±0.32）。次氯酸钠导致粗糙度增加（μ=0.02±0.19）。
在所有时间段内，ES 的颜色变化都高于 MS；次氯酸钠引起的颜色变化最大。两种材料在 RC 中浸泡后更稳定。
