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Original Article
Effect of vital tooth bleaching agent on dentin bonding
Na-Young Jeong, Myoung-Uk Jin, Young-kyung Kim, Sung Kyo Kim
J Korean Acad Conserv Dent 2006;31(2):79-85.   Published online March 31, 2006
DOI: https://doi.org/10.5395/JKACD.2006.31.2.079
AbstractAbstract PDFPubReaderePub

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® 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® dentin bonding agent (Bisco, USA), Z-250® 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.

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  • Effect of the bleaching light on whitening efficacy
    Jong-Hyun Park, Hye-Jin Shin, Deok-Young Park, Se-Hee Park, Jin-Woo Kim, Kyung-Mo Cho
    Journal of Korean Academy of Conservative Dentistry.2009; 34(2): 95.     CrossRef
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