Sealing ability of AH Plus endodontic sealer, seal apex, multi-walled carbon nanotube-incorporated AH plus and carbon nanotube-incorporated seal apex using dye penetration microleakage

This study evaluates the sealing ability of multi-walled carbon nanotube (MWCNT)-incorporated root canal sealers in the apical third of the root canal. Fifty extracted single-rooted human teeth were divided into five groups: control (no sealer), MWCNT-incorporated AH Plus, MWCNT-incorporated Seal Apex, AH Plus and Seal Apex. The sealing ability was assessed through dye penetration microleakage. Results indicated that the MWCNT-incorporated sealers exhibited significantly less microleakage compared to traditional sealers, with MWCNT-incorporated AH Plus showing the least leakage. The control group exhibited the highest microleakage. MWCNTs enhanced the sealing efficacy by improving sealer adaptation to the canal walls. These findings highlight the potential of carbon nanotube-enhanced sealers to improve endodontic treatment outcomes. Further studies incorporating in vivo models and longer evaluation periods are recommended to confirm the clinical applicability of these advanced materials.