Skip to main content

Advertisement

Table 2 Means, standard deviation, and t test results of surface roughness measurements (nm) for the groups

From: Impact of nanohydroxyapatite on enamel surface roughness and color change after orthodontic debonding

Roughness parameter   T0 T1 T2 T3
R a NanoHAP 19.1 ± 5.4A 33.4 ± 13.6B 29.9 ± 12.4B 28.4 ± 9.9B
  Toothpaste 20.2 ± 7.1A 34.4 ± 12.4B 33.4 ± 13.2B 33.7 ± 12.4B
  P value* 0.62 0.83 0.36 0.21
R q NanoHAP 26.3 ± 8.1A 43.7 ± 15.9B 35.4 ± 13.3B 36.7 ± 12.1B
  Toothpaste 27.1 ± 8.7A 46.9 ± 17.7B 39.3 ± 14.4B 39.9 ± 14.5B
  P value* 0.81 0.6 0.44 0.52
R z NanoHAP 490.5 ± 188.2A 782.7 ± 385.8B 622.0 ± 271.9B 622.4 ± 260.9B
  Toothpaste 368.0 ± 195.3A 855.6 ± 434.3B 700.1 ± 426.1B 753.1 ± 377.1B
  P value* 0.09 0.49 0.55 0.45
  1. In each row, mean values with the same capital letter in superscript were not statistically different (Sidak test)
  2. T0 prebond, T1 after resin removal, T2 after 10 days of nanoHAP serum or HAP toothpaste application, T3 after 2 months
  3. *t test results