ABSTRACT
Statement of the Problem: Correct proportioning and mixing are essential to ensure cements attain their optimum physical properties
Purpose: The aim of this experimental study was to evaluate the influence of various mixing techniques including manual, mechanical mixing, and ultrasonic vibration on push-out bond strength of calcium enriched mixture [CEM]
Materials and Method: Ninety 2-mm-thick dentin disks were prepared from single-rooted human teeth and filled with CEM mixed with manual, trituration, or ultrasonic methods. Push-out bond strength values of the specimens were measured by a universal testing machine after 3 and 21 days. The samples were then examined under a stereomicroscope at 40× magnification to determine the nature of bond failure. Data were analyzed by Kruskal-Wallis and Mann-Whitney test. [p< 0.05]
Results: The highest [7.59 MPa] and lowest [4.01 MPa] bond strength values were recorded in conventional method [after 21 days] and trituration method [after 3 days], respectively. There was no statistically significant difference between the three techniques in 3 and 21 days
Conclusion: According to the results, various mixing techniques had no effect on the push-out bond strength of CEM cement