Aim: The purpose was to investigate the effect of pine bark (proanthocyanidin, natural antioxidant) solution on the shear bond strength (SBS) of metal brackets bonded with composite resin to human enamel after bleaching with hydrogen peroxide (HP).

Materials And Methods: Sixty recently extracted premolars were divided into an experimental group (n = 45), which was bleached with 40% HP, and a control group (n = 15), which was not bleached. The experimental group was further divided into three sub-groups. Specimens in group IB (n = 15) were bonded immediately after bleaching; specimens in group SA (n = 15) were bleached, then treated with 10% sodium ascorbate and then bonded; group PB specimens (n = 15) were bleached, then treated with 5% pine bark solution and bonded. The specimens were debonded with Universal testing machine. The adhesive remnant index was calculated.

Results: No significant differences in shear bond strength were noted when the pine bark treated group was compared with the control group and sodium ascorbate group (p > 0.05). Treating the bleached enamel surface with 10% sodium ascorbate or 5% pine bark solution reverses the SBS reduction.

Conclusion: So, as a natural antioxidant and less hazardous, clinicians can choose pine bark solution instead of sodium ascorbate.

Download full-text PDF

Source
http://dx.doi.org/10.3109/00016357.2013.776108DOI Listing

Publication Analysis

Top Keywords

pine bark
24
sodium ascorbate
16
bond strength
12
group bleached
12
bark solution
12
group
9
brackets bonded
8
natural antioxidant
8
shear bond
8
experimental group
8

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!