Intratubular Sealer Penetration: Scanning Electron Microscopy Associated with Cathodoluminescence Analysis

Area of Science:

• Endodontics
• Dental Materials Science
• Biomaterials

Background:

• Effective sealing of dentinal tubules is crucial for successful endodontic treatment.
• Understanding the penetration capabilities of different endodontic sealers is essential for clinical decision-making.

Purpose of the Study:

• To compare the dentinal tubule penetration of three endodontic sealers: Endofill (END), AH Plus (AHP), and Sealer Plus BC (SPB).

Main Methods:

• Forty-five human mandibular premolars were divided into three groups (n=15) for END, AHP, and SPB.
• After obturation, samples were sectioned at 2 and 5 mm from the apex and analyzed using scanning electron microscopy with cathodoluminescence.
• Percentage penetration (PP%) and maximum penetration depth (MPD) were quantified and statistically analyzed.

Main Results:

• AH Plus (AHP) and Sealer Plus BC (SPB) showed significantly higher percentage penetration (PP%) and maximum penetration depth (MPD) than Endofill (END).
• AHP and SPB exhibited similar penetration capabilities.
• Penetration depth was significantly greater at 5 mm compared to 2 mm from the root apex for all sealers.

Conclusions:

• Sealer Plus BC (SPB) demonstrates satisfactory performance in penetrating dentinal tubules, comparable to AH Plus (AHP) and superior to Endofill (END).
• Enhanced sealer penetration into dentinal tubules is associated with improved outcomes in endodontic therapy.