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http://dx.doi.org/10.5395/JKACD.2006.31.6.445

Effects of one or two applications of all-in-one adhesive on microtensile bond strength to unground enamel  

Son, Chang-Yong (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Kim, Hyeon-Cheol (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Hur, Bock (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Park, Jeong-Kil (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Publication Information
Restorative Dentistry and Endodontics / v.31, no.6, 2006 , pp. 445-451 More about this Journal
Abstract
The purposes of this study were to compare the effects of one or two applications of all-in-one adhesives on microtensile bond strengths (${\mu}$TBS) to unground enamel and to investigate the morphological changes in enamel surfaces treated with these adhesives using a scanning electron microscopy (SEM). Twenty-five noncarious, unrestored human mandibular molars were used. The unground enamel surfaces were cleansed with pumice. The following adhesives were applied to lingual, mid-coronal surfaces according to manufacture's directions; Clearfil SE bond in SE group, Adper Prompt L-Pop$^{TM}$1 coat in LP1 group, 2 coats in LP2 group, Xeno$^{\R}$III1 coat in XN1 group, and 2 coats in XN2 group. After application of the adhesives, a hybrid light-activated resin composite was built up on the unground enamel. Each tooth was sectioned to make a cross-sectional area of approximately 1.0 mm$^2$ for each stick. The microtensile bond strength was determined. Each specimen was observed under SEM to examine the morphological changes. Data were analyzed with one-way ANOVA. The results of this study were as follows; 1. The microtensile bond strength values were; SE (19.77 ${\pm}$ 2.44 MPa), LP1 (13.88 ${\pm}$ 3.67 MPa), LP2 (14.50 ${\pm}$ 2.52 MPa), XN1 (14.42 ${\pm}$ 2.51 MPa) and XN2 (15.28 ${\pm}$ 2.79 MPa). SE was significantly higher than the other groups in bond strength (p < 0.05). All groups except SE were not significantly different in bond strength (p < 0.05). 2. All groups were characterized as shallow and irregular etching patterns.
Keywords
Unground enamel; All-in-one adhesive; Microtensile bond strength; Morphological change;
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