Phrukkanon S, Burrow M F, Tyas M J
University of Melbourne, School of Dental Science, Victoria, Australia.
Oper Dent. 1998 Jul-Aug;23(4):195-202.
The shear bond strengths of an amalgam (Permite C) and a gallium alloy (Galloy) to dentin, mediated by four dentin adhesives (Super-Bond D-Liner, Super-Bond D-Liner II, Paama 2, and Panavia 21), were investigated. Flat labial dentin surfaces were prepared from bovine lower incisor teeth. A 3 mm-in-diameter area of dentin was bonded according to each manufacturer's directions before placement of Permite C or Galloy. The bonds were stressed in shear at a crosshead speed of 1 mm/min. The mean shear bond strengths were analyzed using one-way ANOVA and Student's t-test, and fracture modes were assessed under X20 magnification and analyzed using Kruskal-Wallis and Mann-Whitney U tests. Scanning electron micrographs were taken of the bond interface of separate samples. The results showed no significant difference among the bond strengths of Super-Bond D-Liner (2.79 MPa, 2.69 MPa), Super-Bond D-Liner II (3.41 MPa, 2.65 MPa), and Paama 2 (0.70 MPa, 0.50 MPa) bonded to Permite C and Galloy (respective values in parentheses); however, Panavia gave a significantly better bond with Permite C (0.42 MPa) than with Galloy (0 MPa). Super-Bond D-Liner and Super-Bond D-Liner II gave stronger bonds than Paama 2 and Panavia with both Permite C and Galloy. For each dentin adhesive, there was no difference in fracture mode between Permite C and Galloy. It was concluded that, since all bond strengths were very low, none of the dentin adhesives tested would enhance the clinical retention of Permite C or Galloy. However, although the use of Paama 2 with Galloy was originally recommended by the manufacturer for dentin sealing purposes, no adhesion was claimed.
研究了汞合金（Permite C）和镓合金（Galloy）通过四种牙本质黏结剂（Super - Bond D - Liner、Super - Bond D - Liner II、Paama 2和Panavia 21）与牙本质的剪切黏结强度。从牛下颌切牙制备平坦的唇面牙本质表面。在放置Permite C或Galloy之前，根据各制造商的说明对直径3毫米的牙本质区域进行黏结。以1毫米/分钟的十字头速度对黏结处施加剪切力。使用单因素方差分析和学生t检验分析平均剪切黏结强度，并在20倍放大倍数下评估断裂模式，使用Kruskal - Wallis和Mann - Whitney U检验进行分析。对单独样本的黏结界面拍摄扫描电子显微镜照片。结果显示，Super - Bond D - Liner（2.79兆帕，2.69兆帕）、Super - Bond D - Liner II（3.41兆帕，2.65兆帕）和Paama 2（0.70兆帕，0.50兆帕）与Permite C和Galloy黏结的黏结强度之间无显著差异（括号内为各自的值）；然而，Panavia与Permite C（0.42兆帕）的黏结明显优于与Galloy（0兆帕）的黏结。Super - Bond D - Liner和Super - Bond D - Liner II与Permite C和Galloy的黏结都比Paama 2和Panavia更强。对于每种牙本质黏结剂，Permite C和Galloy之间的断裂模式没有差异。得出的结论是，由于所有黏结强度都非常低，所测试的牙本质黏结剂均不能提高Permite C或Galloy的临床固位力。然而，尽管制造商最初推荐将Paama 2与Galloy用于牙本质封闭目的，但未宣称有黏附作用。
