Effect of microwave disinfection on the hardness and adhesion of two resilient liners
Effect of microwave disinfection on the hardness and adhesion of two resilient liners
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DOI：
10.1016/j.prosdent.2005.04.017
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发表时间：
2005-08-01
影响因子：
4.6
通讯作者：
Puckett, AD
中科院分区：
文献类型：
--
作者：
Machado, AL;Breeding, LC;Puckett, AD
问题陈述。建议使用微波照射进行义齿消毒。然而，该程序对弹性衬垫和义齿基托丙烯酸树脂之间的硬度和粘合强度的影响尚不清楚。 目的。本研究评估了水储存时间和微波消毒对两种有机硅弹性衬里材料与热聚合丙烯酸树脂的硬度和剥离粘合强度的影响。材料和方法。丙烯酸树脂 (Lucitone 199) 样本 (75 X 10 X 3 mm) 在粘合前储存在 37 摄氏度的水中（2 或 30 天）（n = 160）。将弹性衬里材料（GC Reline Extra Soft 和 Dentusil）粘合到义齿基托上，并分为以下 4 组（n = 10）： 粘合后立即进行测试（对照）；将标本浸入水（200 mL）中并照射两次，650 W 6 分钟；每天对样本进行照射，完成 7 个总消毒周期；将样本浸入水中（37°C）7天。对样品进行 180 度剥离测试（十字头速度为 10 毫米/分钟），并记录失效值 (MPa) 和失效模式。还对弹性材料进行了预处理和后处理硬度测量（肖氏 A 级）。进行三向方差分析，然后进行 Tukey HSD 检验 (alpha=.05)。结果。分析表明，在所有条件下，GC Reline Extra Soft 的平均失效强度 (0.95-1.19 MPa) 均显着更高 (P
Statement of problem. Microwave irradiation has been suggested for denture disinfection. However, the effect of this procedure on the hardness and bond strength between resilient liners and denture base acrylic resin is not known.Purpose. This study evaluated the effect of water storage time and microwave disinfection on the hardness and peel bond strength of 2 silicone resilient lining materials to a heat-polymerized acrylic resin.Material and methods. Acrylic resin (Lucitone 199) specimens (75 X 10 X 3 mm) were stored in water at 37 degrees C (2 or 30 days) before bonding (n = 160). The resilient lining materials (GC Reline Extra Soft and Dentusil) were bonded to the denture base and divided into the following 4 groups (n = 10): Tests performed immediately after bonding (control); specimens immersed in water (200 mL) and irradiated twice, with 650 W for 6 minutes; specimens irradiated daily for 7 total cycles of disinfection; specimens immersed in water (37 degrees C) for 7 days. Specimens were submitted to a 180-degree peel test (at a crosshead speed of 10 mm/min) and the failure values (MPa) and mode of failure were recorded. Pretreatment and posttreatment hardness measurements (Shore A) of the resilient materials were also performed. Three-way analysis of variance, followed by the Tukey HSD test, was performed (alpha=.05).Results. The analysis revealed that, for all conditions, the mean failure strengths of GC Reline Extra Soft (0.95-1.19 MPa) were significantly higher (P