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Table 1 Surface roughness values

From: Comparison of surface roughness of root cementum and orthodontically induced root resorption craters from high- and low-fluoridation areas: a 3D confocal microscopy study

Location Surface roughness (Sa) Mean difference (95% CI) P value*
High fluoride Low fluoride
Mean SD Mean SD
Crater 13.90 4.55 24.74 9.32 10.84 (5.14, 16.54) 0.002
Cervical 10.58 5.37 11.01 6.37 0.42 (−4.15, 5.00) 0.268
Middle 7.838 9.72 4.17 1.35 −3.67 (−9.06, 1.71) 0.967
Apical 8.69 3.57 6.32 2.32 −2.37 (−4.70, −0.03) 0.108
Total 10.25 6.52 11.56 9.85 1.31 (−0.955, 3.568) 0.255
  1. *P values from one-way ANOVA with log transformation of Sa values (logSa)