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Table 2 Comparison of the mean and standard deviation values of the tensile bond strength pre and post aging in each group

From: Comparison of tensile bond strength of ball attachments made of different materials to root canal dentin after chewing simulation

Attachment group   T value P value
T0
Pre aging
T1
Post aging
X (MPa) SD X (MPa) SD
Group TI 6.5 0.28 5.08 0.22 27.05  < .00001
Group PE 18.96 0.37 9.57 0.32 48.36  < .00001
Group PK 19.24 0.24 9.64 0.35 75.27  < .00001
  1. X, mean; SD, standard deviation; T0, pre aging measurement; T1, post aging measurement; MPa, Mega Pascal unit