Document Type: Original Article

Authors

1 Dept. of Endodontics, Dental and Periodontal Research Center, Dental Faculty, Golgasht Street, Tabriz University of Medical Sciences, Tabriz, Iran.

2 Dept. of Dental Biomaterials, Dental Faculty, Tabriz University of Medical Sciences, Golgasht Street, Tabriz, Iran.

3 Dept. of Chemistry, Tabriz University, Tabriz, Iran.

4 Student of Dentistry, Dental Faculty, Tabriz University of Medical Sciences, Golgasht Street, Tabriz, Iran.

Abstract

Statement of the Problem: Recently, zeolite has been regarded to improve the properties of dental materials such as mineral trioxide aggregate (MTA).Purpose: The aim of the present study was to evaluate the effect of incorporating zeolite/silver/zinc (Ze/Ag/Zn) composite at 2 wt% to MTA powder on the push-out bond strength in simulated furcation perforations.Materials and Method: Furcal perforations, measuring 1.3 mm in diameter and 2 mm in height, were simulated in 40 human mandibular first molars. The samples were allocated to two groups (n=20) based on the material used for the repair of perforations. In the group 1, MTA and in the group 2, MTA plus Ze/Ag/Zn (2%) was used. The samples were incubated at 37°C for 1 week. Then the universal testing machine was employed to measure bond strength. The resistance of materials to dislodgment was recorded in MPa. Data were analyzed using t-test. Statistical significance was set at p< 0.05.Results: The push-out bond strength in the group 1 (6.40±1.98 MPa) was significantly higher than that in the group 2 (2.1±0.6 MPa) with p= 0.001.Conclusion: Under the limitations of the present study, it can be concluded that incorporation of Ze/Ag/Zn at 2 wt% to MTA powder had a negative effect on the push-out bond strength. Key Words   ● Bond strength  ● MTA ● Nanoparticles  ● Push out  ● Zeolite