Evaluation of the effect of shelf life of different universal bond systems on dentin bonding
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Bonding agents, shelf life, universal bond system, microtensile bond strength
Abstract
Aim: The aim of this study was to investigate changes in dentin bonding caused by the expiry of shelf life of five universal bond systems.
Methodology: According to the manufacturer’s instructions, both expired and non-expired samples of five universal bond agents [Prime&Bond (Dentsply), Solare Bond (GC), OptiBond (Kerr), Clearfil S Bond (Kuraray), and G-Premio Bond (GC)] were applied to 10 human teeth. Composite blocks measuring 4–5 mm in thickness were then created on the teeth following the application of the bond. The teeth were cut to obtain samples in the form of square sectioned rods approximately 1.0 × 1.0 mm in width and 8–9 mm in length. These samples were then subjected to microtensile bond strength testing, and the results were statistically analyzed (p<0.05).
Results: When evaluating the difference in microtensile bond strength between expired and non-expired adhesive agent groups of the same brand at different shelf life stages, there was a significant decrease between the Kerr, Clearfil, and G-Premio groups (p<0.05), while no significant difference was found in the Prime&Bond and Solare groups (p>0.05). When microtensile bond strength values were assessed among different groups based on shelf life, no significant difference was observed (p>0.05). Among expired adhesive agents, Solare exhibited the highest microtensile bond strength, while among non-expired adhesive agents, G-Premio showed the highest microtensile bond strength.
Conclusion: Universal bond systems should be used in accordance with the manufacturer’s instructions under appropriate storage conditions and considering the shelf life. However, it has been shown that there is no difference in bond strength of universal bond systems within the first six months following the expiration date indicated; they can be used during this period if stored under appropriate conditions.
How to cite this article:
Bas A, Çelikel P. Evaluation of the effect of shelf life of different universal bond systems on dentin bonding. Int Dent Res. 2024;14(3):129-134. https://doi.org/10.5577/intdentres.579
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This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.