Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
J Dent. 2016 Nov;54:56-61. doi: 10.1016/j.jdent.2016.09.004. Epub 2016 Sep 16.
This study aims to determine dentin bonding durability of universal adhesives using shear bond strength (SBS) tests under various degradation conditions.
G-Premio Bond (GP, GC), Scotchbond Universal (SU, 3M ESPE) and All Bond Universal (AB, Bisco) were compared with conventional two-step self-etch adhesive Clearfil SE Bond (SE, Kuraray Noritake Dental). Bonded specimens were divided into three groups of ten, and SBSs with bovine dentin were determined after the following treatments: 1) Storage in distilled water at 37°C for 24h followed by 3000, 10,000, 20,000 or 30,000 thermal cycles (TC group), 2) Storage in distilled water at 37°C for 3 months, 6 months or 1year (water storage, WS group) and 3) Storage in distilled water at 37°C for 24h (control).
SE bonded specimens showed significantly higher SBSs than universal adhesives, regardless of TC or storage periods, although AB specimens showed significantly increased SBSs after 30,000 thermal cycles. In comparisons of universal adhesives under control and degradation conditions, SBS was only reduced in SU after 1year of WS.
Following exposure of various adhesive systems to degradation conditions of thermal cycling and long term storage, SBS values of adhesive systems varied primarily with degradation period.
Although universal adhesives have lower SBSs than the two-step self-etch adhesive SE, the present data indicate that the dentin bonding durability of universal adhesives in self-etch mode is sufficient for clinical use.
本研究旨在通过剪切结合强度（SBS）测试，确定在各种降解条件下通用型胶粘剂的牙本质粘结耐久性。
将 G-Premio Bond（GP，GC）、Scotchbond Universal（SU，3M ESPE）和 All Bond Universal（AB，Bisco）与传统两步自酸蚀粘结剂 Clearfil SE Bond（SE，Kuraray Noritake Dental）进行比较。将粘结试件分为三组各十个，分别在以下处理后用牛牙本质测定 SBS：1）37°C蒸馏水中储存 24h 后，进行 3000、10000、20000 或 30000 次热循环（TC 组），2）37°C蒸馏水中储存 3 个月、6 个月或 1 年（水储存，WS 组）和 3）37°C蒸馏水中储存 24h（对照组）。
SE 粘结试件的 SBS 显著高于通用型胶粘剂，无论 TC 还是储存时间如何，但 AB 试件在 30000 次热循环后 SBS 显著增加。在对照组和降解条件下通用型胶粘剂的比较中，仅在 WS 1 年后 SU 的 SBS 降低。
在将各种粘结系统暴露于热循环和长期储存的降解条件下后，粘结系统的 SBS 值主要随降解时间而变化。
虽然通用型胶粘剂的 SBS 低于两步自酸蚀粘结剂 SE，但本数据表明通用型胶粘剂在自酸蚀模式下的牙本质粘结耐久性足以满足临床应用。
