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Sealers and warm gutta-percha obturation techniques
1Department of Restorative Dentistry, Faculty of Dental Surgery, University of Malta, Malta.
Selecting the right root canal sealer is crucial for warm vertical compaction. MTA Fillapex and Apexit Plus are suitable for warm gutta-percha obturation, while Septodont sealer is best for cold techniques.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Warm vertically compacted gutta-percha techniques involve heating root canal sealers.
- The suitability of specific sealers with these heated techniques requires investigation.
Purpose of the Study:
- To evaluate the compatibility of four dental sealers (experimental, MTA Fillapex, Apexit Plus, AH Plus) with warm vertical compaction.
- To assess how heat affects sealer properties and chemical composition.
Main Methods:
- Sealer composition analyzed using scanning electron microscopy and energy-dispersive spectroscopy.
- Properties tested after exposure to 100°C or 37°C for 1 minute.
- Setting time, flow, and film thickness evaluated per ISO 6876 (2012).
Main Results:
- AH Plus and the experimental sealer showed heat-induced changes in setting time and film thickness.
- MTA Fillapex, Septodont, and Apexit Plus were unaffected by heat.
- Calcium hydroxide peaks observed in the experimental sealer and Apexit Plus after setting.
Conclusions:
- MTA Fillapex and Apexit Plus are suitable for warm gutta-percha obturation.
- Septodont sealer is recommended for cold lateral condensation techniques.
- Sealer selection must align with the chosen obturation method.
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