Abstract: The purpose of this study was to determine the effect of different curing durations using an LED curing light on the shear bond strength of Tran bond XT resin cement used to bond ceramic brackets to tooth structure.
Materials and methods: Thirty human premolars had their buccal surface bonded to ceramic (3M, Clarity) brackets using Transbond XT under a static constant load for all samples. The resin cement of thirty samples was cured by an LED (Ortholux, 3M Unitek, Minnesota, USA) with an output of 1600 mW/cm2. The teeth were cured for 3, 6, and 10 seconds (n=10). Shear bond strength was carried out to deboned the bonded ceramic using the universal testing machine for all groups.
Results: The 6 and 10 seconds curing by the orthulux light curing scored significantly higher values when compared to the 3 seconds curing (recommended by the manufacturer) while, the 10 seconds curing duration did not show significant difference to the 6 seconds curing p<0.05.
Conclusion: Curing the Transbond XT for 6 seconds rather than the 3 seconds curing (recommended by the manufacturer) by ortholux curing unit will improve the bond strength of ceramic brackets to tooth structure.
Keywords: LED, Ceramic brackets, Shear bond strength.
Title: Light Curing Durations Affect Shear Bond Strength of Transbond-XT
Author: Mona ALY Abbassy, Ali H. Hassan, Naof Yassen matar, Ahmed S. Bakry
International Journal of Healthcare Sciences
ISSN 2348-5728 (Online)
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