Department of Removable Prosthodontics & Gerodontology, Tokyo Dental College.
Mihama Dental Clinic.
Bull Tokyo Dent Coll. 2023 Dec 28;64(3):89-95. doi: 10.2209/tdcpublication.2023-0006. Epub 2023 Aug 18.
The aim of this study was to investigate the effects of combining mechanical (ultrasonic) and chemical cleaning (using denture cleaners) on the surface roughness of silicone or acrylic soft relining materials. The silicone soft relining material with the lowest Shore A hardness and a acrylic soft relining material routinely used in Japan were selected. Four groups were established based on type of treatment: immersion in water (W); ultrasonic cleaning in tap water (U); ultrasonic cleaning in a hypochlorous acid denture cleanser (HU); or ultrasonic cleaning in an acidic denture cleanser (AU). Following the tests, surface roughness was determined as the arithmetic mean height of the surface (Sa) and maximum height (Sz). Data were analyzed using the Kruskal-Wallis test followed by Bonferroni correction for a multiple comparison. No significant difference was observed in the Sa or Sz of the silicone soft relining material between the 4 groups. Significant differences were observed in the Sa of the acrylic soft relining material between Groups W and HU (p=0.008) and between Groups W and AU (p=0.008), but no significant differences in the Sz among the 4 groups. Combining U with AU or U with HU yielded no increase in the surface roughness of the silicon soft relining material. The surface roughness of the acrylic soft relining material showed an increase, however, with the combination treatments used.
本研究旨在探讨机械（超声）清洁与化学清洁（使用假牙清洁剂）相结合对硅橡胶或丙烯酸软衬材料表面粗糙度的影响。选择了日本常规使用的硬度最低的硅橡胶软衬材料和一种丙烯酸软衬材料。根据处理方式的不同，将它们分为四组：水浸泡（W）、自来水超声清洗（U）、次氯酸假牙清洁剂超声清洗（HU）或酸性假牙清洁剂超声清洗（AU）。试验后，用表面粗糙度算术平均高度（Sa）和最大高度（Sz）来表示表面粗糙度。采用 Kruskal-Wallis 检验对数据进行分析，并用 Bonferroni 校正进行多重比较。在硅橡胶软衬材料的 Sa 和 Sz 方面，四组之间没有显著差异。在丙烯酸软衬材料的 Sa 方面，W 组与 HU 组（p=0.008）和 W 组与 AU 组（p=0.008）之间有显著差异，但四组之间的 Sz 没有显著差异。U 与 AU 或 U 与 HU 的联合使用并未增加硅橡胶软衬材料的表面粗糙度。然而，组合处理后，丙烯酸软衬材料的表面粗糙度增加。
