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Published on: November 4, 2010
Dynamic sealing ability of MTA root canal sealer
J Camilleri1, M G Gandolfi, F Siboni
1Department of Building and Civil Engineering, Faculty for the Built Environment, University of Malta, Malta, Italy. josette.camilleri@um.edu.mt
Mineral trioxide aggregate sealer (MTAS) demonstrated comparable sealing ability to Pulp Canal Sealer (PCS). MTAS formed beneficial calcium phosphate crystals in simulated body fluid, enhancing its surface characteristics.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Root canal sealers are crucial for preventing coronal microleakage.
- Evaluating the sealing ability and biocompatibility of novel sealers is essential for endodontic treatment success.
Purpose of the Study:
- To compare the sealing ability of mineral trioxide aggregate sealer (MTAS) and Pulp Canal Sealer (PCS) using gutta-percha.
- To assess the leaching and surface characteristics of MTAS and PCS in Hank's balanced salt solution (HBSS) over time.
Main Methods:
- Fluid filtration method was used to evaluate the sealing ability of root-filled teeth after 1 and 28 days.
- Scanning electron microscopy (SEM) examined surface characteristics.
- Inductively coupled plasma atomic absorption spectrometry (ICP-AAS) analyzed ion leaching.
Main Results:
- MTAS exhibited crystalline deposits rich in calcium and phosphorus on its surface when exposed to a physiological solution.
- These crystalline deposits were absent in PCS and on MTAS stored in 100% humidity.
- The sealing ability of MTAS was found to be similar to that of PCS.
Conclusions:
- A novel mineral trioxide aggregate-based sealer demonstrates comparable sealing efficacy to a commercial sealer.
- MTAS releases calcium ions in simulated body fluid, promoting the formation of calcium phosphate crystals on its surface.
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