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  • Title: Relative shear bond strength and microleakage of two dentine bonding agents.
    Author: Grobler SR, Rossouw RJ, van Wyk Kotze TJ, du Toit IJ.
    Journal: J Dent Assoc S Afr; 1996 May; 51(5):301-6. PubMed ID: 9461874.
    Abstract:
    We determined the relative shear bond strength (SBS) to dentine and cementum and the microleakage of All-Bond 2 universal dental adhesive and OptiBond multi-use filled adhesive. We found that for both systems the SBS increased significantly (p < 0.001) from 15 minutes to 24 hours and 7 days, but there was a slight significant (p < 0.001) weakening towards 30 days. At each time point the shear bond strength of All-Bond 2 and OptiBond were also compared and it was found that OptiBond had significantly higher values (p < 0.05) at all times except at 15 minutes. Optibond also had the lower value for the microleakage (p < 0.001). This study showed that OptiBond had significantly higher shear bond strengths to and lower microleakage in dentine which may increase the longevity of the material in the clinical situation.
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