Er-Yag Laser Effect On Push-Out Bond Strength Of Mta And Bio-Dentine In Furcal Perforation Repair: A Comparative Study

Abstract

Objective: The aim of the present study was to evaluate the effect of Er-YAG laser activated irrigation of sodium hypochlorite solution on the push-out bond strength of furcal perforations repaired with MTA and Biodentine.
Materials and Method: 50 freshly extracted human mandibular teeth with divergent roots were selected. Furcal perforations were created with the help of number three round diamond bur. Half of the samples were repaired with MTA and the other half with biodentine. Each group was divided into five subgroups. 1) Normal saline 2) 3% NaOCl 3) Normal saline with laser activated irrigation 4) 3% NaOCl with laser activated irrigation 5) no irrigation (control group). Push-out bond strength test assessed the bond strength of the specimens.
Results:Biodentine showed significantly higher push-out bond strength than pro root MTA (p< 0.05). Laser-activated irrigation of 3% NaOCl and normal saline did not significantly influence the push-out bond strength (p> 0.05).
Conclusion: Biodentine presented significantly higher resistance to dislocation than MTA as repair material in furcation defects. ErYAG laser activated irrigation did not significantly influence the push-out bond strength of bio dentine or MTA.