Department of Restorative Dentistry, Division of Oral Health Science, Hokkaido University, Graduate School of Dental Medicine, Kita-ku, Sapporo, Japan.
Dent Mater J. 2013;32(2):203-11. doi: 10.4012/dmj.2012-204.
The purpose of this study was to evaluate the short-term µTBS (Micro-tensile bond strength) and microscopic (SEM and TEM) observation of four recent adhesives. One adhesive was an experimental step-less 1-step system (LLB-2, Tokuyama Dental), which is an all-in-one system without the light-curing step in the application process. The other two were self-adhering light-cured flowable composite resin systems FLD (Fusio Liquid Dentin, Pentron Clinical Technologies) and VF (Vertise Flow Dental Restorative Materials, Kerr Corporation), which combine all the bonding steps together. A 2-step self-etching system MG (Clearfil MegaBond, Kuarary Medical) was employed as the control group in this study. The µTBS of MG was the highest (79.0 MPa) followed by that of LLB-2 (63.1 MPa), FLD (23.6 MPa), and VF (13.1 MPa). The microscopic observations showed that MG and LLB-2 had an approximately 20 µm and 5 µm adhesive layer respectively, without bubble or gap-formation at the resin-dentin interface, which were found in FLD and VF.
本研究旨在评估四种新型黏结剂的短期微拉伸黏结强度（µTBS）和微观（SEM 和 TEM）观察结果。一种黏结剂是实验性无步骤一步法系统（LLB-2，日本东海齿科材料株式会社），它是一种在应用过程中没有光固化步骤的一体化系统。另外两种是自黏光固化流动复合树脂系统 FLD（Fusio Liquid Dentin，登士柏齿科）和 VF（Vertise Flow Dental Restorative Materials， Kerr 公司），它们将所有黏结步骤结合在一起。2 步自酸蚀系统 MG（Clearfil MegaBond，可乐丽牙科）被用作本研究的对照组。MG 的 µTBS 最高（79.0 MPa），其次是 LLB-2（63.1 MPa）、FLD（23.6 MPa）和 VF（13.1 MPa）。微观观察显示，MG 和 LLB-2 分别具有约 20 µm 和 5 µm 的黏结层，在树脂-牙本质界面没有气泡或间隙形成，而在 FLD 和 VF 中则存在这种情况。
