Klosa Karsten, Shahid Walid, Aleknonytė-Resch Milda, Kern Matthias
Department of Prosthodontics, Propaedeutics and Dental Materials, School of Dentistry, Christian-Albrechts University, 24105 Kiel, Germany.
Institute of Medical Informatics and Statistics, University Hospital Schleswig-Holstein, Campus Kiel, 24105 Kiel, Germany.
Materials (Basel). 2020 Jun 26;13(12):2880. doi: 10.3390/ma13122880.
The objective of this study was to evaluate the effects of different cleaning and conditioning procedures after contamination on the tensile bond strength (TBS) of a luting resin to a core build-up composite resin. Specimens ( = 384) made of a core build-up material were stored for 3 weeks in 37 °C water. Half of the specimens were contaminated with saliva and a disclosing silicone and then cleaned either using phosphoric acid, a pumice suspension, air-abrasion with alumina or polishing powder. Surface conditioning was performed by either using a dentin adhesive, a silane containing primer or a composite resin primer, which resulted in 24 unique combinations of 16 specimens per group. Before measuring TBS, half of the specimens of each group were stored in 37 °C water for 3d or were artificially aged for 150 days. Results show that cleaning with pumice or air-abrasion are superior methods compared to using a polishing powder or phosphoric acid. Silane is an inferior conditioning agent compared to composite or dentin primers. Ideally, after contamination, bonding surfaces should be cleaned with a pumice suspension and conditioned with a dentin adhesive. Those surfaces could also be cleaned and conditioned with air-abrasion with alumina particles and a composite resin primer.
本研究的目的是评估污染后不同清洁和预处理程序对粘结树脂与核桩复合树脂之间拉伸粘结强度（TBS）的影响。由核桩材料制成的试件（n = 384）在37℃水中储存3周。一半试件被唾液和示踪硅橡胶污染，然后分别用磷酸、浮石悬浮液、氧化铝气磨或抛光粉进行清洁。表面预处理分别使用牙本质粘结剂、含硅烷底漆或复合树脂底漆，从而形成每组16个试件的24种独特组合。在测量TBS之前，每组一半试件在37℃水中储存3天或人工老化150天。结果表明，与使用抛光粉或磷酸相比，用浮石或气磨进行清洁是更好的方法。与复合底漆或牙本质底漆相比，硅烷是较差的预处理剂。理想情况下，污染后，粘结表面应用浮石悬浮液清洁并用牙本质粘结剂预处理。这些表面也可用氧化铝颗粒气磨和复合树脂底漆进行清洁和预处理。
