Belcher M A, Kunsemiller J A
Operative Section-Restorative Department, Southern Illinois University School of Dental Medicine, Alton 62002, USA.
Am J Dent. 1999 Dec;12(6):305-8.
To determine which surface treatment of a resin-modified glass-ionomer (RMGI) will result in optimal bond strength to amalgam when used with an amalgam adhesive.
Fifty discs of Fuji II LC (4 mm thick) were cured in acrylic testing holders and randomly divided into 5 groups of 10 each. The surface of the glass-ionomer was treated in 1 of 5 ways: (1) no treatment (control) (2) no etch, Amalgambond (AB) primer and AB adhesive (3) citric acid etch, AB primer, and AB adhesive (per manufacturer's instructions) (4) 37.5% phosphoric acid etch, AB primer and AB adhesive, and (5) microetch, 37.5% phosphoric acid etch, AB primer and AB adhesive. Amalgam was condensed onto the treated RMGI surface. Samples were stored in water at 37 degrees C and tested at 24 hours for shear bond strength. The data was analyzed statistically by ANOVA followed by Scheffé post hoc tests for significance. Glass-ionomer discs were also treated as described in each group, sputter-coated and examined using a scanning electron microscope.
No significant improvement in bond strengths to amalgam was observed with any of the treatments of the RMGI surface. Amalgambond significantly increased the bond strength of the amalgam to the RMGI.
确定当树脂改性玻璃离子体（RMGI）与汞合金粘合剂一起使用时，哪种表面处理方式能使其与汞合金产生最佳粘结强度。
将五十个富士II LC圆盘（4毫米厚）在丙烯酸测试支架中固化，并随机分为五组，每组十个。玻璃离子体表面采用以下五种方式之一进行处理：（1）不处理（对照组）（2）不蚀刻，使用Amalgambond（AB）底漆和AB粘合剂（3）柠檬酸蚀刻、AB底漆和AB粘合剂（按照制造商说明）（4）37.5%磷酸蚀刻、AB底漆和AB粘合剂，以及（5）微蚀刻、37.5%磷酸蚀刻、AB底漆和AB粘合剂。将汞合金凝结在经处理的RMGI表面。样品在37摄氏度的水中储存，并在24小时时测试其剪切粘结强度。数据通过方差分析进行统计分析，随后进行Scheffé事后检验以确定显著性。玻璃离子体圆盘也按照每组所述进行处理，进行溅射镀膜并使用扫描电子显微镜检查。
RMGI表面的任何处理方式均未观察到与汞合金粘结强度的显著提高。Amalgambond显著提高了汞合金与RMGI的粘结强度。
