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08:26
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Published on: July 10, 2014
Calcium Hydroxide Associated With Chitosan Nanoparticles and Propolis: Effects on the Sealer-Dentin Interface
Gabrielle Jacob1, Pedro Rossato Lourenço1, Flavia Moura Medina Diniz1
1Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.
Summary
Calcium hydroxide-based intracanal medications did not affect sealer-dentin bond strength or adaptation. However, combining calcium hydroxide with chitosan nanoparticles and propolis significantly reduced dentin gelatinolytic activity.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Intracanal medications are crucial in endodontic treatment.
- Calcium hydroxide is a common intracanal medicament.
- Its effect on the sealer-dentin interface requires further investigation.
Purpose of the Study:
- To evaluate the impact of calcium hydroxide-based intracanal medications on the sealer-dentin interface.
- To assess bond strength, adhesive adaptation, failure patterns, and dentin gelatinolytic activity.
Main Methods:
- Fifty human single-rooted teeth were used.
- Groups received different calcium hydroxide-based medications (alone, with chitosan nanoparticles, propolis, or both).
- Sealer bond strength, interface adaptation, failure mode, and gelatinolytic activity were analyzed.
Main Results:
- No significant differences in bond strength or adhesive interface adaptation were found across groups.
- Mixed failures predominated and varied by group and root third.
- The combination of calcium hydroxide, chitosan nanoparticles, and propolis significantly reduced dentin gelatinolytic activity.
Conclusions:
- Calcium hydroxide-based intracanal medications do not negatively impact sealer-dentin bond strength or adaptation.
- The combination of calcium hydroxide with chitosan nanoparticles and propolis effectively reduces dentin gelatinolytic activity.
- These findings suggest potential benefits for combining these agents in endodontic protocols.
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