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The effect of delayed composite resin filling on microtensile bond strength


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The effect of delayed composite resin filling on microtensile bond strength

Article information

Restor Dent Endod. 2004;29(3):233-238
Publication date (electronic) : 2004 May 31
doi : https://doi.org/10.5395/JKACD.2004.29.3.233
Hyun-Sik Park, Young-Gon Cho, Byung-Cheul Park, Jong-Uk Kim, Hee-Young Choi, Jong-Jin Kim, Cheul-Hee Jin, Sang-Hoon Yoo, Young-Jae Ki
Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.
Corresponding author: Young-Gon Cho. Department of Conservative Dentistry, College of Dentistry, Chosun University, 421 Susuk-dong, Dong-gu, Gwangju, 501-825, Korea. Tel: 82-62-220-3840, Fax: 82-62-232-9064, ygcho@mail.chosun.ac.kr

Abstract

The purpose of this study was to evaluate the effect of immediate or delayed composite resin filling on dentinal microtensile bond strength (µTBS) after applied the adhesive.

The coronal dentin of human third molars was exposed. Single-Bond or One-Step was applied on the dentin surfaces, and composite resin were constructed immediately (group 1) or 5 min., 10 min., 15 min., 20 min. and 30 min. (groups 2-6) after an adhesive was applied. The specimens were sectioned and made bar-shaped. Each surface area of them was about 1mm2. The µTBS test was performed by EZ test. The results were analysed by One-way ANOVA and Tukey's test at 95% significance level.

The results suggested that the µTBS of Single-Bond to dentin was decreased when the composite resin was constructed 20 min. and 30 min. after Single-Bond was applied. But the µTBS of One-Step was not affected by delayed composite resin filling.

Keywords: Immediate resin filling; Delayed resin filling; Microtensile bond strength; Adhesive; Coronal dentin; Bar-shaped

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Article information Continued

Copyright © 2004 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.

Table 1

Adhesives and their composition

Table 1

Bis-GMA = bisphenol-glysidyl-methacrylate, HEMA = 2-hydroxyethyl methacrylate, BPDM = biphenyl dimethacrylate

Table 2

Group classification

Table 2

S = Single Bond, O = One-Step

Table 3

Mean microtensile bond strength (MPa) according to delayed composite resin filling and statistical analysis

Table 3

S: Single Bond, O: One-Step, S.D: Standard Deviation. Superscripts of the same letter indicate values of no statistical significant difference (p > 0.05).