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首页> 外文期刊>The Journal of Prosthetic Dentistry >In vitro hardness, water sorption, and resin solubility of laboratory-processed and autopolymerized long-term resilient denture liners over one year of water storage.
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In vitro hardness, water sorption, and resin solubility of laboratory-processed and autopolymerized long-term resilient denture liners over one year of water storage.

机译：实验室处理和自聚合的长期弹性义齿衬管在储水一年后的体外硬度，吸水率和树脂溶解度。

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Statement of Problem. The clinical properties of resilient denture liners may be influenced by the method by which they are polymerized. Purpose. This in vitro study investigated material property changes of 2 new resilient denture lining materials that represent 2 different curing modes: autopolymerization and conventional laboratory processing. Material and Methods. Two silicone-based liner products were tested; one was allowed to autopolymerize (Tokuyama Soft Relining Paste), and the other was laboratory processed (Luci-Sof). Ninety-six disk-shaped specimens (31 x 10 mm) were fabricated in aluminum ring molds for hardness testing. Sixty bar-shaped specimens (44 x 8.5 x 1.2 mm) were fabricated in aluminum molds for water sorption and resin solubility testing. Shore A hardness was determined directly after specimen fabrication and after 1 day, 1 week, 1 month, 6 months, and 1 year of water storage at 37 degrees C. Water sorption and resin solubility were determined at the same time intervals. Analysis of variance and appropriate t tests were used to determine the effect of immersion duration both within and between the products tested. All statistical testing was performed at alpha=.05. Results. The hardness values of the laboratory-processed material were consistently greater than those of the autopolymerized material. After 1 week of water storage, the hardness of the autopolymerized specimens stabilized, whereas the hardness of the laboratory-processed specimens increased with immersion duration. Water sorption values for the 2 test products were similar after 6 months and after 1 year of water storage. At 1 month, 6 months, and 1 year, significantly lower resin solubility (P<.05) was recorded for the autopolymerized specimens compared with their laboratory-processed counterparts. Conclusion. Within the limitations of this study, the laboratory-processed material was harder than the autopolymerized product and demonstrated greater resin solubility over time. The latter result was not expected.
机译：问题陈述。弹性义齿衬垫的临床特性可能会受到其聚合方法的影响。目的。这项体外研究调查了代表2种不同固化模式的2种新型弹性义齿衬里材料的材料性能变化：自聚合和常规实验室处理。材料与方法。测试了两种基于有机硅的衬里产品;一种允许自聚合（Tokuyama软衬浆），另一种经过实验室处理（Luci-Sof）。在铝环形模具中制造了九十六个盘状样品（31 x 10毫米）以进行硬度测试。在铝模中制作了60个棒状样品（44 x 8.5 x 1.2毫米），用于吸水和树脂溶解度测试。在制备样品后以及在37℃下储水1天，1周，1个月，6个月和1年后直接测定肖氏A硬度。在相同的时间间隔测定吸水率和树脂溶解度。方差分析和适当的t检验用于确定浸入时间在被测产品内部和之间的影响。所有统计检验均以alpha = .05进行。结果。实验室加工材料的硬度值始终大于自聚合材料的硬度值。储水1周后，自聚合标本的硬度趋于稳定，而实验室处理标本的硬度则随着浸泡时间的延长而增加。储水6个月和1年后，两种测试产品的吸水值相似。在1个月，6个月和1年时，与实验室处理的样品相比，自动聚合样品的树脂溶解度（P <.05）明显降低。结论。在这项研究的限制范围内，实验室加工的材料比自聚合的产品坚硬，并且随着时间的推移显示出更大的树脂溶解性。不能预期后一个结果。

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