PMID: 11317408Apr 25, 2001Paper

Rewetting strategies for bonding to dry dentin with an acetone-based adhesive

The Journal of Adhesive Dentistry
W J Finger, M Balkenhol

Abstract

The objective of this study was to investigate the effect of rewetting agents on bonding to etched and air-dried dentin. For shear bond strength testing (SBS), the proximal surfaces of 90 molars were ground on wet SiC paper to prepare them for resin composite bonding with Gluma One Bond (Heraeus Kulzer, Germany). Dentin cavities were cut (Ø 3.5 mm, 1.5 mm deep) in 60 molars and restored with Gluma One Bond/Charisma for evaluation of the marginal performance (MGW). The adhesive was applied on acid-etched and rinsed dentin after the following pretreatment techniques: A: moist; B: 15 s air dried; C through F: 15 s air dried, followed by 30 s rewetting with C: water; D: 35% HEMA; E: Gluma Primer; F: 5% glutardialdehyde; G through J: as C through F, but followed by 15 s air drying. SBS data were analyzed with ANOVA and Tukey's test, and MGW with Kruskal-Wallis and Mann-Whitney U-test (alpha = 0.05). Shear bond strengths of groups A and B were 20.3 and 1.1 MPa, respectively. The Tukey ranking of SBS results was [A=C=D=E] > [C=D=E] > [C=D=I] > H > [F=J] > [B=G]. Groups A, C, D, E, H, and I with 3 or 4 gap-free restorations each showed no differences in MGW (p > 0.05). In contrast, no gap-free specimens were found in groups B, F, G, or...Continue Reading

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