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J Conserv Dent. 2019 Jul-Aug;22(4):396-400. doi: 10.4103/JCD.JCD_545_18.

Comparative evaluation of push-out bond strength of root-end filling materials in root-end cavities prepared by laser or ultrasonic technique: An in vitro study.

Author information

1
Department of Conservative Dentistry and Endodontics, Genesis Institute of Dental Sciences and Research, Ferozepur, Punjab, India.
2
Department of Prosthodontics, Private Practice, Smile Care Dental Clinic and Implant Centre, Nabha, Punjab, India.
3
Department of Pedodontics and Preventive Dentistry, Dasmesh Institute of Dental Sciences and Research, Faridkot, Punjab, India.

Abstract

Context:

The use of mineral trioxide aggregate (MTA) and Biodentine as a root-end filling materials used in the root-end cavities prepared by laser or ultrasonic technique is a current topic in the branch of dentistry and push-out bond strength is used to measure the adhesiveness provided by the root-end filling materials.

Aim:

The aim of this study is to evaluate the push-out bond strength of MTA and Biodentine in root-end cavities prepared by erbium:yttrium-aluminium-garne (Er:YAG) laser and ultrasonic retrotip.

Materials and Methods:

A total of 40 extracted maxillary central incisors and canines were selected. Chemomechanical preparation and obturation were done. Root-end resections were performed followed by the root-end cavity preparation and root-end filling. Specimens were divided into four groups. Root-end cavities prepared by Er:YAG laser and filled with MTA, root-end cavities prepared by Er:YAG laser and filled with Biodentine, root-end cavities prepared by ultrasonic retrotip and filled with MTA and root-end cavities prepared by ultrasonic retrotip and filled with Biodentine, respectively. The apical end was again sectioned perpendicular to the long axis. The push-out bond strength was evaluated using a universal testing machine.

Statistical Analysis Used:

The data were analyzed using the analysis of variance and post hoc Tukey test.

Results:

Difference between push-out bond strength of root-end filling materials to root-end cavity walls prepared by laser and ultrasonic retrotips was statistically nonsignificant. Push-out bond strength of MTA and Biodentine did not differ significantly.

Conclusion:

Difference between push-out bond strength of MTA and Biodentine to root-end cavity walls prepared by Er:YAG Laser or ultrasonic retrotip were statistically nonsignificant.

KEYWORDS:

Biodentine; laser; mineral trioxide aggregate; push-out bond strength; root end cavity; ultrasonic retrotips

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