The Influence of Blade Type and Feeding Force during Resin Bonded Dentin Specimen Preparation on the Microtensile Bond Strength Test

This paper presents the effect of blade type and feeding force during resin-bonded dentin specimen preparation on microtensile bond strength (μTBS) test. Forty flat middle specimens were divided into four groups. The each group sectioned according to as follows: fine grit/20 N, grit/40 medium N obtain resin-dentin sticks with a cross-sectional area 1.0 mm2. Four from center tooth subjected μTBS Five remaining selected for surface topography observation under scanning electron microscope (SEM). As result, medium-grit was higher than that fine-grit (p < 0.001), whereas had no influence values = 0.648). From SEM, prepared showed smoother integrity fewer defects edges in comparison blade. grit is one considerable factors may affect testing.