Coronal leakage inhibition in endodontically treated teeth using resin-coating technique

Area of Science:

• Endodontics
• Dental Materials Science
• Restorative Dentistry

Background:

• Coronal leakage poses a significant risk to the long-term success of endodontically treated teeth.
• Effective coronal sealing is crucial to prevent bacterial ingress and protect the root canal filling.

Purpose of the Study:

• To evaluate the efficacy of a resin-coating technique in inhibiting coronal microleakage following endodontic treatment.
• To compare the performance of two different resin coating systems in preventing dye penetration.

Main Methods:

• Thirty-six human incisors underwent endodontic obturation and were prepared for post space.
• Specimens were divided into three groups, receiving either Clearfil SE Bond/Protect Liner F (SE/PLF) or RZII (RZ) resin coating.
• Dye penetration was assessed using 1% methylene blue after storage and sectioning, with penetration length measured.

Main Results:

• Three-way ANOVA indicated that post space preparation, resin coating, and temporization all influenced dye penetration.
• RZII resin coating significantly reduced coronal dye penetration.
• SE/PLF resin coating completely eliminated dye penetration into the root canal system.

Conclusions:

• Resin coating techniques, particularly SE/PLF, demonstrate high efficacy in preventing coronal leakage after endodontic procedures.
• The choice of resin coating material significantly impacts the sealing ability against microleakage.
• These findings support the use of specific resin coatings to enhance the longevity of endodontically treated teeth.