Article information
Year 2020 Volume 70 Issue 1 Page 45-53
Title:
Evaluation of the Push-out Bond Strength of MTA-based Sealer in the Simulated Immature Root Models
Keyword(s):
Push-out bond strength, Root canal sealer, MTA
Abstract:
The aim of this study was to compare the push-out bond strength of MTA Fillapex to AH Plus and CU Sealer
in simulated immature root models. The models were created from forty-five extracted single root premolars and
randomly divided into three groups of fifteen each. Root canals were obturated with gutta-percha and one of the
following sealers: MTA Fillapex, AH Plus and CU Sealer. After immersion in phosphate buffered saline for twenty-eight
days, the roots were cut perpendicularly to the long axis to create 3-mm thick slices from the apical end of roots.
The push-out bond strength was measured with a universal testing machine. Failure modes were determined under
scanning electron microscopy. The highest mean of push-out bond strength was found in AH Plus group, followed
by MTA Fillapex and CU Sealer sequentially at p<0.05. Within the limitations of this in vitro study, MTA Fillapex
showed less push-out bond strength to root dentin when compared to AH Plus sealer.