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Title

Data on the push out bond strength of three different root canal treatment sealers

Authors

Deepak Kurup1,*, Ajay Kumar Nagpal2, Shashit Shetty3, Tapan Kumar Mandal4, Juhi Anand5, & Rajdeep Mitra6

 

Affiliation

1,4,5,6Department of Conservative Dentistry &Endodontics, Hazribagh college of dental sciences & hospital, Jharkhand, India; 2Department of Conservative Dentistry &Endodontics, Kanti Devi Dental College and Hospital, Mathura, India; 3Department of Restorative Dental Science, College Of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia;

 

Email

Dr. Deepak Kurup - E-mail: droolez@gmail.com;

 

Article Type

Research Article

 

Date

Received December 5, 2020; Revised December 31, 2020; Accepted January 2, 2020, Published January 31, 2021

 

Abstract

It is of interest to document data on the push out bond strength of three different root canal treatment sealers such as MTA Fillapex (MTA based), AH plus (Epoxy Resin based) and Apexit plus (Calcium hydroxide based). Forty-five freshly extracted human maxillary central incisors with closed apices were selected randomly. All the teeth were sectioned at cement-enamel junction using a diamond disc before starting the root canal preparation to obtain root length of 12 mm. All teeth were instrumented using ProTaper rotary instruments. 5.25% sodium hypoclorite was used for irrigation between instrumentation followed by 17% EDTA, and final rinse by saline. Obturation procedures were done using the gutta-percha single cone technique. 45 roots were randomly assigned to 3 groups of 15 for obturation with gutta-percha cones and 1 of the 3 sealers (n=15). Group 1 = MTA Fillapex sealer + gutta-percha: Group 2 = AH plus sealer + gutta-percha: Group 3 = Apexit plus sealer + gutta-percha. The roots were sectioned horizontally to its canal into 3 sections: Coronal, Mid-root and Apical-thirds using a precision cutting machine, with a thickness of 3 mm. The specimens were subjected to push-out test using a universal testing machine that carried a plunger. The loading speed was 1mm/min until the dislodgment of the material occurred. The independent t- test was used to compare the mean scores among the study groups. The level of significance was set at 5% for all tests. After the push-out bond strength test, each sample was evaluated under stereomicroscope (40x) to determine the mode of failure and recorded as one of the following categories: adhesive, cohesive or mixed. The observations thus obtained were subjected to statistical analysis using Student - t test. AH Plus showed significantly higher values than MTA Fillapex and Apexit plus (p < 0.05). Amongst the push-out bond strength AH Plus sealer showed significant difference from MTA Fillapex and Apexit plus groups. There was no significant difference between MTA Fillapex and Apexit plus however (p>0.05). Microscopic analysis displayed that the majority of the modes were cohesive failures for AH Plus, adhesive failures for MTA Fillapex and mixed failures for Apexit Plus. . Thus, AH Plus had the highest bond strength and MTA
Fillapex had the lowest bond strength to root dentin. Mean push-out bond strength values were ranked as follows; AH Plus >Apexit Plus > MTA Fillapex. Microscopic analysis displayed that the majority of the modes were cohesive failures of AH Plus, adhesive failures for MTA Fillapex and mixed failures for Apexit Plus.

 

Keywords

AH Plus; Apexit Plus; MTA Fillapex; push-out bond strength; bond failures.

 

Citation

Kurup et al. Bioinformation 17(1): 67-72 (2021)

 

Edited by

P Kangueane

 

ISSN

0973-2063

 

Publisher

Biomedical Informatics

 

License

This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.