丙烯酸树脂表面不同处理方式对软衬硅橡胶粘结强度的影响

发布时间：2018-04-22 23:22

本文选题：处理方式 + 软衬硅橡胶　；参考：《中国现代医学杂志》2014年01期

【摘要】：目的观察聚甲基丙烯酸甲酯(PMMA)表面不同处理方式对软衬硅橡胶粘结强度的影响,以期寻找一种能增进软衬硅橡胶与PMMA之间粘结力的临床简便有效的方法,为临床软衬材料的应用提供理论指导。方法制作并选择PMMA试片(10 mm×50 mm×3 mm)84片,用600目砂纸在流水下以相同压力、按同一方向均匀打磨试片一端的粘结面(10 mm×10 mm),超声清洗后自然晾干。将试片按不同处理方式随机分为4组,分别为打磨组(对照组)、喷砂组、MMA单体处理组、喷砂+MMA处理组,每组21片制作10个剪切粘结强度测试试件(每个试件由2片试片夹心Silagum Comfort室温固化软衬硅橡胶组成),24 h后用电子万能材料试验机测试剪切粘结强度(SBS),余下1片送扫描电镜观察。数据行单因素方差分析,Duncan检验。结果表面喷砂+MMA处理后,PMMA与软衬硅橡胶获得了最大的粘结强度,优于单一处理方法组。结论在临床应用中,对PMMA表面进行喷砂+MMA双处理再行硅橡胶外衬,可以获得良好的临床效果。
[Abstract]:Objective to observe the effect of different surface treatments of PMMA on the bond strength of soft lined silicone rubber, and to find a simple and effective method to improve the adhesion between soft lined silicone rubber and PMMA. To provide theoretical guidance for the clinical application of soft lining materials. Methods the 10 mm 脳 50 mm 脳 3 mm)84 PMMA film was made and selected. The adhesive surface at one end of the test piece was evenly polished with 600 mesh sandpaper under the same pressure under the flowing water, and the adhesive surface at one end of the test piece was uniformly polished with 10 mm 脳 10 mm mm)84, which was naturally dried after ultrasonic cleaning. The specimens were randomly divided into four groups according to different treatment methods: grinding group (control group), sand blasting group (MMA) treatment group, sand blasting group (MMA) treatment group. Ten specimens of shear bond strength were made in each group of 21 pieces (each specimen consisted of two pieces of sandwich Silagum Comfort soft lining silicone rubber cured at room temperature). After 24 hours, the shear bond strength was tested by electronic universal material testing machine. The remaining one piece was observed by scanning electron microscope (SEM). The data were analyzed by single factor ANOVA and Duncan test. Results the maximum bond strength between MMA and soft lining silicone rubber was obtained after MMA treatment, which was superior to the single treatment group. Conclusion in clinical application, sand blasting MMA double treatment and silicone rubber lining on PMMA surface can obtain good clinical effect.
【作者单位】：井冈山大学附属医院口腔科;南昌大学附属口腔医院修复科;
【分类号】：R783.1

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