热酸溶液蚀刻对氧化锆粘接强度的影响  

Effect of hot chemical etching on bond strength of zirconia to resin

作　　者：戴文雍[1] 印厚才[1] 陈晨[1] 谢海峰[1] 章非敏[1] 

机构地区：[1]南京医科大学口腔医学研究所,南京210029

出　　处：《华西口腔医学杂志》2013年第6期569-573,共5页West China Journal of Stomatology

基　　金：江苏高校优势学科建设工程基金资助项目(2011137)

摘　　要：目的研究牙科氧化锆经3种酸溶液加热处理后与树脂的初期粘接强度和粘接耐久性。方法将80枚氧化锆瓷片分为5组,进行不同的表面处理,随后制作陶瓷/树脂粘接试样。其中,A组:经H2SO4/(NH4)2SO4混合液热处理,使用氧化锆底涂剂;B组:HF/HNO3混合液热处理,使用氧化锆底涂剂;C组:经H2SO4/HF/HNO3混合液热处理,使用氧化锆底涂剂;D组:氧化铝喷砂,使用氧化锆底涂剂;E组:摩擦化学法硅涂层,使用硅烷偶联剂。将粘接试样分为两部分,分别于水储24 h和40 d后进行剪切粘接强度(SBS)测试。扫描电镜(SEM)下观察3种酸处理和氧化铝喷砂处理氧化锆瓷片的表面形态。结果老化前E组SBS最高,其余4组间差异无统计学意义;老化后A、B、E组显示了较高的SBS。水储老化40 d后A组和B组的SBS值较水储24 h时有显著性增加,剩余3组老化前后差异均无统计学意义。结论热酸溶液蚀刻相对于喷砂的粗化方法能够显著提高氧化锆与树脂的初期粘接强度和粘接耐久性。Objective This study aims to evaluate the influence of hot chemical etching on short- and long-term shear bond strength （SBS） ofzirconia to resin. Methods Eighty zirconia ceramic slices were obtained and randomly divided into five groups based on the surface treatment to be applied--group A： H2SO4/（NH4）2SO4 hot solution etching ＋ application of Clearfil; group B： HF/HNO3 hot solution etching ＋ application of Clearfil; group C： H2SOJHF/HNO3 hot solution etching ＋ Clearfil; group D： alumina sandblasting ＋ application of Clearfil; group E： tribochemical silica coating ＋ application of silane coupling agent. Eighty composite cylinders were bonded to pretreated ceramic slices using a bis-GMA-based resin cement. Specimens in each group were divided into two fractions： the first half received 24 h water storage, and the second half re- ceived 40 d water storage. Then, SBS tests were conducted. Morphological analysis of sandblasted alumina and hot chemical- etched zirconia surfaces were performed by scanning electron microscopy（SEM）. Results Group E displayed the highest SBS before artificial aging, and no statistical difference was found among the other groups. After 40 d water storage, groups A, B, and E showed significantly higher SBS than groups C and D. SBS increased significantly after artificial aging in groups A and B. No significant variations were found before and after artificial aging in the other groups. Conclusion The experimental hot chemical etching solution provides enhanced bonding for zirconia than sandblasting, and the bond strengths remain stable after artificial aging.

关 键 词：氧化锆 表面处理 酸蚀 粘接 老化 

分 类 号：R783.1[医药卫生—口腔医学]