A comparison of apical seal and tubular penetration of mineral trioxide aggregate, zinc oxide eugenol, and AH26 as root canal sealers in laterally condensed gutta-percha obturation: An in vitro study
KM Attur1, S Kamat2, KA Shylaja3, V Tegginmani4, D Patil4, RP Choudary5
1 Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College and Hospital, Visnagar, Gujarat, India
2 Department of Conservative and Endodontics, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India
3 Department of Oral Pathology and Microbiology, Narsinhbhai Patel Dental College and Hospital, Visnagar, Gujarat, India
4 Department of Conservative and Endodontics, AME Dental College, Raichur, India
5 Department of Conservative and Endodontics, HKES Society's S. Nijalingappa Institute of Dental Science and Research, Gulbarga, Karnataka, India
K M Attur
Department of Conservative Dentistry and Endodontics, Narsinhbhai Patel Dental College and Hospital, Visnagar - 384 315, Gujarat
Source of Support: None, Conflict of Interest: None
Aims and Objectives: To study the possible correlation of dentinal tubule penetration and microleakage by three root canal sealers: AH26, zinc oxide eugenol (ZOE), and mineral trioxide aggregate (MTA) using a dye leakage and scanning electron microscopy (SEM) methods.
Materials and Methods: Fifty-one maxillary anterior teeth with completely formed apex divided into three groups. Root canals were enlarged till No. 60 K-file using step-back technique. Alternate 5.25% and 17% ethylenediaminetetraacetic acid irrigants were used and obturated with gutta-percha and one of the three sealers: MTA, AH26, and ZOE. The extent of leakage was determined under stereomicroscope after immersion in methylene blue and also observed the tubular penetration of sealer under SEM.
Results: AH26 had lower microleakage scores than the other sealers, and MTA demonstrated the least penetration (P < 0.05).
Conclusion: There was an inverse relationship between microleakage and tubular penetration of root canal sealers. Deeper the penetration, lesser is the leakage.