Comparison of seal after obturation techniques using a polydimethylsiloxane-based root canal sealer

Area of Science:

• Endodontics
• Dental Materials Science

Background:

• Root canal sealers are crucial for preventing coronal microleakage.
• Polydimethylsiloxane-based sealers offer potential advantages in flow and handling.
• Evaluating new sealer techniques is essential for improving endodontic treatment outcomes.

Purpose of the Study:

• To compare the sealing ability of GuttaFlow, a polydimethylsiloxane-based sealer, using different obturation techniques in single-rooted teeth.
• To assess the long-term leakage of GuttaFlow when used with master cones versus as a standalone material.

Main Methods:

• Four obturation techniques using GuttaFlow were tested: master cone with backfilling (up-and-down motion or rotation), master cone as carrier, and sealer-only.
• A control group utilized AH Plus sealer with warm vertical compaction.
• Fluid filtration technique was employed to evaluate leakage at 1, 6, and 12 weeks.

Main Results:

• All tested groups showed equivalent apical seal over time, with no significant differences.
• Group 3, where master cones served as carriers for GuttaFlow, exhibited more extensive leakage.
• GuttaFlow used with a single master cone provided a seal comparable to the control group.

Conclusions:

• GuttaFlow, particularly when used with a single gutta-percha master cone, provides an effective apical seal in root canal fillings.
• The technique of using master cones as carriers for GuttaFlow may compromise the seal.
• This study supports the use of GuttaFlow as a viable alternative sealer in endodontic obturation.