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Kim, Kim, Hwang, Oh, and Hwang: Effect of increasing application time of single bottle adhesives to microtensile bond strength of dried dentin
Original Article
Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2005; 30(6): 435-441.

Published online: 30 November 2005

DOI: https://doi.org/10.5395/JKACD.2005.30.6.435

Effect of increasing application time of single bottle adhesives to microtensile bond strength of dried dentin

Hak-Geun Kim, Dong-Jun Kim, Yun-Chan Hwang, Wonmann Oh, In-Nam Hwang

Department of Conservative Dentistry, College of Dentistry, Chonnam National University, Korea.

Corresponding author: In-Nam Hwang. Department of Conservative Dentistry, College of Dentistry, Chonnam National University, 8 Hak-dong, Dong-gu, Gwangju, South Korea, 501-757. Tel: 82-62-220-4443, Fax: 82-62-225-8387, hinso@jnu.ac.kr

Received 16 May 2005       Revised 12 July 2005       Accepted 26 August 2005

Copyright © 2005 Korean Academy of Conservative Dentistry

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The purpose of this study was to evaluate the effect of increasing application time of single bottle adhesives (SBA) to microtensile bond strength (MTBS) of dried dentin. To expose the superficial dentin surfaces, human molars were sectioned perpendicular to the long axis of tooth. 32% phosphoric acid gels were applied for 15s and rinsed. The teeth were randomly assigned to 3 groups ; S group (Single Bond), O group (One-Step), P group (Prime & Bond NT). Each group was divided to 3 subgroups (W: dentin wipe with wet gauge and light cured immediately, D: dentin dried for 30s and light cured immediately, 30: dentin dried for 30s and light cured after applying SBA for 30s). Composite resin was built up on the dentin surface and sectioned to obtain 20 specimens with 1 mm2 cross sectional area and the MTBS was measured.
For Single Bond, the mean MTBS of S-W and S-30 group were higher than that of S-D group statistically (P < 0.05). For One-Step, the mean MTBS of O-D group was statistically lower than that of O-W group (P < 0.05). For Prime & Bond NT, the mean MTBS of P-30 group was statistically lower than that of P-D group (P < 0.05).

Keywords: Microtensile bond strength, Dried dentin, Application time, Single Bond, One-Step, Prime & Bond NT

Figures and Tables

Figure 1
Microtensile bond strength (MPa) of each group.
jkacd-30-435-g001
Table 1
Adhesive systems used in this study
jkacd-30-435-i001

Bis-GMA = bis-phenol-A-diglycidyl methacrylate,

HEMA = 2-hydroxyethyl methacrylate,

BPDM = biphenyl dimethacrylate,

PENTA = dipentaerythritol pentacrylate phosphorous acid ester,

UDMA = urethane dimethacrylate.

Table 2
Microtensile bond strength (MPa) of each group
jkacd-30-435-i002

Superscripts of the same letter indicate values of no statistical significant difference (p > 0.05).

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