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Ko, Cho, Jin, Yoo, Kim, Park, Ki, Choi, and Kim: Effect of wetness on the enamel bonding
Original Article
Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2004; 29(3): 205-211.

Published online: 31 May 2004

DOI: https://doi.org/10.5395/JKACD.2004.29.3.205

Effect of wetness on the enamel bonding

Keun-Ho Ko, Young-Gon Cho, Cheul-Hee Jin, Sang-Hoon Yoo, Jong-Uk Kim, Byung-Cheul Park, Young-Jae Ki, Hee-Young Choi, Jong-Jin Kim

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

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.

Abstract

This study evaluated the microleakage and interfacial gap between enamel and composite resin under the dry and wet condition of the enamel surface. V shaped class 5 cavities were prepared on the occlusal portion of extracted human molars. Samples were divided into three groups: D group (air dry for 10-15 s), BD group (blot dry with moist cotton pellet), and DR group (air dry for 10-15 s and rewet with Aqua-Prep F for 20 s).
Cavities were filled using Aelitefil composite resin after applied One-Step. Microleakage was tested by 2% methylene blue dye solution and the data were statistically analysed by Kruskal-Wallis test and Mann-Whitney test. Also Enamel-resin interface was observed under SEM. Group BD showed statistically lower microleakage than group D (p < 0.05), but there was no statistically significant difference between group BD and DR (p > 0.05). At the enamel-resin interface, group D showed the gap of 2 µm thickness, but group BD and DR showed close adaptation.
In conclusion, the use of blot dry and rewetting agent (Aqua-Prep F) resulted in decreased microleakage and improved adhesion between enamel and resin when using One-Step.

Keywords: Microleakage, Interfacial gap, Air dry, Blot dry, Rewet

Figures and Tables

Figure 1
Number of microleakage scores of each group
jkacd-29-205-g001
Figure 2
D (dry) group showed the gap (G) of 2 µm thickness at the enamel (E)-resin (R) interface (SEM ×5,000)
jkacd-29-205-g002
Figure 3
BD (blot dry) group showed close adaptaition (CA) at the enamel (E)-resin (R) interface (SEM ×5,000)
jkacd-29-205-g003
Figure 4
DR (dry/rewet with Aqua-Prep F) group showed close adaptation (CA) at the enamel (E)-resin (R) interface (SEM ×5,000)
jkacd-29-205-g004
Table 1
Materials used in this study and their chemical composition
jkacd-29-205-i001

BPDM, biphenyl dimethacrylate; Bis-GMA, bisphenol glycidyl methacrylate;

HEMA, 2-hydroxyethyl methacrylate; TEGDMA, triethylenglycol dimethacrylate

Table 2
Group classification according to the surface condition of cavity
jkacd-29-205-i002
Table 3
Distribution of microleakage scores and means at enamel margins
jkacd-29-205-i003
Table 4
Statistical analysis to enamel microleakage among groups by Kruskal-Wallis test and Mann-Whitney test
jkacd-29-205-i004

*: significant differences (p < 0.05)

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