Table 3: Means (MPa), standard deviations, and confidence intervals of shear bond strength for each group.

GroupsShear bond strength (mean)Standard deviationConfidence interval

H/S/A2.507.81-11.39

H/S3.287.89-12.57

H/S/UA2.025.98-8.84

H/UA1.323.33-5.23

MBEP/A1.977.59-10.41

MBEP2.754.21-8.15

Values followed by different letters present statistical difference (p<0.05).