Statement of problem

The separation of a denture liner from the denture base can be a clinical problem. Different surface treatments to increase the bond have been evaluated, but studies comparing the effect of argon plasma and erbium-doped yttrium aluminum garnet (Er:YAG) laser on the bond between acrylic resin and a denture liner are lacking.

Purpose

The purpose of this in vitro study was to evaluate the effect of argon plasma and Er:YAG laser treatments on the bond strengths of acrylic resin to 2 denture liners.

Materials and methods

Heat-polymerized acrylic resin (Acron Duo) was bonded to silicone soft-liner materials (Molloplast B, n=30; Mollosil, n=30) to create control specimens (n=10), argon plasma treatment (n=10), and Er:YAG laser treatment (n=10). Silicone liners were polymerized on resin specimens. The tensile bond strength test was performed with a crosshead speed of 10 mm/min with a 10-N load until failure. Data were analyzed by using the Kruskal-Wallis test and unpaired t test (α=.05).

Results

The laser group showed significantly higher bond strength than the argon plasma group for both Molloplast-B (P=.001) and Mollosil (P<.001). The highest tensile bond strength values were determined in the laser-treated Molloplast-B group (1.325 ±0.119 MPa) while the lowest bond strength values were determined in the Mollosil control group (0.384 ±0.018 MPa).

Conclusions

Argon plasma and Er:YAG laser applications increases the tensile bond strength between soft-liner material and resin. Er:YAG laser treatment results in higher bond strength values than treatment with argon plasma for 1 minute.

中文翻译：

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氩等离子体和Er：YAG激光对义齿衬里与丙烯酸树脂拉伸结合强度的影响

问题陈述

义齿衬里与义齿基托的分离可能是临床问题。已经评估了增加粘合力的不同表面处理方法，但是缺乏比较氩等离子体和掺钇铝石榴石（Er：YAG）激光对丙烯酸树脂和义齿衬里粘合效果的研究。

目的

这项体外研究的目的是评估氩气等离子体和Er：YAG激光处理对丙烯酸树脂与2个假牙衬里的粘结强度的影响。

材料和方法

将热聚合丙烯酸树脂（Acron Duo）与有机硅软衬材料（Molloplast B，n = 30； Mollosil，n = 30）粘合在一起，制成对照样品（n = 10），进行氩等离子体处理（n = 10），和Er：YAG激光治疗（n = 10）。硅树脂衬里在树脂样品上聚合。拉伸粘结强度测试以10 mm / min的十字头速度在10-N的载荷下进行，直到失效。数据通过Kruskal-Wallis检验和未配对t检验（α= .05）进行分析。

结果

对于Molloplast-B（P = .001）和Mollosil（P <.001）而言，激光组的结合强度明显高于氩等离子体组。在激光处理的Molloplast-B组中确定了最高的拉伸粘结强度值（1.325±0.119 MPa），而在Mollosil对照组中确定了最低的粘结强度值（0.384±0.018 MPa）。

结论

氩等离子体和Er：YAG激光的应用增加了软衬材料与树脂之间的拉伸粘合强度。Er：YAG激光处理产生的结合强度值比氩气等离子体处理1分钟要高。