Author/Authors :
Ghasemi, Negin Dept. of Endodontics - Dental and Periodontal Research Center - Dental Faculty - Golgasht Street - Tabriz University of Medical Sciences, Tabriz, Iran , Rahimi, Saeed Dept. of Endodontics - Dental and Periodontal Research Center - Dental Faculty - Golgasht Street - Tabriz University of Medical Sciences, Tabriz, Iran , Samiei, Mohammad Dept. of Endodontics - Dental and Periodontal Research Center - Dental Faculty - Golgasht Street - Tabriz University of Medical Sciences, Tabriz, Iran , Mohamadi, Mehrnush Dept. of Endodontics - Dental and Periodontal Research Center - Dental Faculty - Golgasht Street - Tabriz University of Medical Sciences, Tabriz, Iran , Rezaei, Yashar Dept. of Dental Biomaterials - Dental Faculty - Tabriz University of Medical Sciences, Tabriz, Iran , Divband, Baharak Dept. of Chemistry - Tabriz University, Tabriz, Iran , Farhangi, Negin Dental Faculty - Tabriz University of Medical Sciences, 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.
Keywords :
Zeolite , Push out , Nanoparticles , MTA , Bond strength
