Er,Cr:YSGG 激光、喷砂和硅烷处理对修复后复合材料剪切粘结强度的影响。

Effect of Er,Cr:YSGG laser, air abrasion, and silane application on repaired shear bond strength of composites.

机构信息

Restorative Dentistry, Indiana University School of Dentistry, Indianapolis, IN 46202, USA.

出版信息

Oper Dent. 2013 May-Jun;38(3):E1-9. doi: 10.2341/11-054-L. Epub 2012 Nov 6.

DOI:10.2341/11-054-L

PMID:23131133

Abstract

UNLABELLED

Aged resin composites have a limited number of carbon-carbon double bonds to adhere to a new layer of resin. Study objectives were to 1) evaluate various surface treatments on repaired shear bond strength between aged and new resin composites and 2) to assess the influence of a silane coupling agent after surface treatments.

METHODS

Eighty disk-shape resin composite specimens were fabricated and thermocycled 5000 times prior to surface treatment. Specimens were randomly assigned to one of the three surface treatment groups (n=20): 1) air abrasion with 50-μm aluminum oxide, 2) tribochemical silica coating (CoJet), or 3) Er,Cr:YSGG (erbium, chromium: yttrium-scandium-gallium-garnet) laser or to a no-treatment control group (n=20). Specimens were etched with 35% phosphoric acid, rinsed, and dried. Each group was divided into two subgroups (n=10): A) no silanization and B) with silanization. The adhesive agent was applied and new resin composite was bonded to each conditioned surface. Shear bond strength was evaluated and data analyzed using two-way analysis of variance (ANOVA).

RESULTS

Air abrasion with 50-μm aluminum oxide showed significantly higher repair bond strength than the Er,Cr:YSGG laser and control groups. Air abrasion with 50-μm aluminum oxide was not significantly different from tribochemical silica coating. Tribochemical silica coating had significantly higher repair bond strength than Er,Cr:YSGG laser and the control. Er,Cr:YSGG laser and the control did not have significantly different repair bond strengths. Silanization had no influence on repair bond strength for any of the surface treatment methods.

CONCLUSION

Air abrasion with 50-μm aluminum oxide and tribochemical silica followed by the application of bonding agent provided the highest repair shear bond strength values, suggesting that they might be adequate methods to improve the quality of repairs of resin composites.

摘要

目的

1）评估各种表面处理对老化和新树脂复合材料之间修复剪切结合强度的影响，2）评估表面处理后硅烷偶联剂的影响。

方法

在进行表面处理之前，将 80 个圆盘状树脂复合材料样本进行热循环 5000 次。将样本随机分配到以下三个表面处理组之一（n=20）：1）用 50-μm 氧化铝喷砂，2）摩擦化学二氧化硅涂层（CoJet），或 3）Er,Cr:YSGG（铒、铬：钇-钪-镓石榴石）激光或无处理对照组（n=20）。样本用 35%磷酸酸蚀，冲洗并干燥。每组分为两个亚组（n=10）：A）不硅烷化和 B）硅烷化。将胶粘剂施加到每个处理后的表面，并将新的树脂复合材料粘结到其上。评估剪切结合强度，并使用双因素方差分析（ANOVA）对数据进行分析。

结果

用 50-μm 氧化铝喷砂的表面处理显示出比 Er,Cr:YSGG 激光和对照组更高的修复结合强度。用 50-μm 氧化铝喷砂的表面处理与摩擦化学二氧化硅涂层没有显著差异。摩擦化学二氧化硅涂层的修复结合强度明显高于 Er,Cr:YSGG 激光和对照组。Er,Cr:YSGG 激光和对照组之间的修复结合强度没有显著差异。硅烷化对任何表面处理方法的修复结合强度都没有影响。