Effect of vital tooth bleaching agent on dentin bonding.
10.5395/JKACD.2006.31.2.079
- Author:
Na Young JEONG
1
;
Myoung Uk JIN
;
Young Kyung KIM
;
Sung Kyo KIM
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Korea. skykim@knu.ac.kr
- Publication Type:Original Article
- Keywords:
Vital bleaching;
Carbamide peroxide;
Ethanol;
Dentin bonding;
Shear bond strength
- MeSH:
Bicuspid;
Crowns;
Dentin*;
Ethanol;
Humans;
Tooth Bleaching*;
Tooth*;
Urea
- From:Journal of Korean Academy of Conservative Dentistry
2006;31(2):79-85
- CountryRepublic of Korea
- Language:English
-
Abstract:
To evaluate the effect of vital tooth bleaching agent and alcohol pretreatment on dentin bonding, flat dentin windows were produced on the buccal side of the crowns of fifty-five extracted, human premolars. A bleaching gel, Opalescence(R) with 10% of carbamide peroxide (Ultradent Product, USA) was daily applied on the teeth of three experimental groups for six hours for 10 consecutive days, while teeth of a control group were not bleached. After 6 hours of bleaching gel application, the specimens were washed and stored in saline until the next day application. After application of One-step(R) dentin bonding agent (Bisco, USA), Z-250(R) resin (3M-ESPE, USA) was bonded to dentin with a mount jig. Shear bond strength was measured with an Instron machine (Type 4202, Instron Corp., USA) after 24 hours. The results were analyzed using one-way ANOVA and Duncan's multiple range test at p < 0.05. Immediate bonding group showed significantly lower bond strength than un-bleached control group (p < 0.05). Ethanol-treated group showed significantly higher bond strength compared to immediate bonding group (p < 0.05). However, the bond strength of the ethanol treatment group was lower than that of the un-bleached control group (p < 0.05). There were no significant difference in shear bond strength between the 2-week delayed bonding group and the ethanol-treated group (p > 0.05) and between delayed bonding group and un-bleached control group (p > 0.05). In the condition of the present study, it seems that alcohol pretreatment after bleaching procedure can reduce the adverse effect of vital bleaching agent on dentin bonding.
