Effect of reline material and denture base surface treatment on the impact strength of a denture base acrylic resin.
Effect of reline material and denture base surface treatment on the impact strength of a denture base acrylic resin.
复制标题
衬里材料和义齿基托表面处理对义齿基托丙烯酸树脂冲击强度的影响。
DOI：
10.1111/j.1741-2358.2009.00292.x
复制
发表时间：
2010
期刊：
影响因子：
2
通讯作者：
A. C. Pavarina
中科院分区：
文献类型：
--
作者：
Luciano Elias da Cruz Perez;A. Machado;S. Canevarolo;C. Vergani;E. T. Giampaolo;A. C. Pavarina
目标
在本研究中，评估了重衬和表面处理对热聚合义齿基托丙烯酸树脂 (Lucitone 550-L) 冲击强度 (IS) 的影响。
材料和方法
L 矩形棒材由 Ufi Gel Hard (UH) 和 Tokuso Rebase Fast (TR) 重衬树脂制成 (60 x 6 x 2 mm) 并重衬 (2 mm)。还制作了用 L 重新衬里的样本以及完整的 L、TR 和 UH 样本 (60 x 6 x 4 mm)，以进行比较。在重新衬里之前，L 表面未经处理或用甲基丙烯酸甲酯单体和/或由重新衬里树脂制造商提供的粘合剂 (BA) 润湿。在所有样本长度的中点处加工出 V 形凹口。凹口是沿着样本的宽度（Nw）或厚度（Nth）制作的。夏比冲击试验是使用专门设计和制造的 0.5 J 摆进行的。使用单向方差分析和 Tukey 诚实显着差异事后检验（p = 0.05）分别分析每个凹口位置的数据。
结果
L 的 IS 与 L/L 相似。对于 Nw 缺口，用 TR BA 处理义齿基托 L 并用 TR 衬里材料衬里可产生最高的 IS。
结论
由热聚合丙烯酸树脂 Lucitone 550 制成的样本在使用硬质椅边衬里树脂 TR 及其专有 BA 进行衬里后，其 IS 得到提高。
OBJECTIVE
In this study, the effect of relining and surface treatment on the impact strength (IS) of a heat-polymerising denture base acrylic resin (Lucitone 550-L) was evaluated.
MATERIALS AND METHODS
Rectangular bars of L were made (60 x 6 x 2 mm) and relined (2 mm) with the relining resins Ufi Gel Hard (UH) and Tokuso Rebase Fast (TR). Specimens relined with L and intact L, TR and UH specimens were also made (60 x 6 x 4 mm), for comparison. Before relining, the L surface was left untreated or wetted with methyl methacrylate monomer and/or the bonding agents (BA) supplied by manufacturers of the reline resins. V-notches were machined at the midpoint of the length of all specimens. The notches were made either across the width (Nw) or across the thickness of the specimens (Nth). The Charpy impact test was performed using a 0.5-J pendulum, which had been specially designed and constructed. Data were analysed separately for each notch position using one-way analysis of variance and Tukey honestly significant difference post-hoc test (p = 0.05).
RESULTS
The IS of L was similar to that of L/L. For the Nw notch, treating the denture base L with TR BA and relining with TR reline material produced the highest IS.
CONCLUSION
The IS of specimens made from heat polymerising acrylic resin Lucitone 550 was increased after relining using the hard chairside reline resin TR with its proprietary BA.