Table 3 Surface roughness values of the PUL, PUC, PUZ, and PET groups at baseline and after repeated toothbrushing (n = 5).

PUL

1.69^a

0.18

1.69

1.46–1.92

1.79^a

0.16

1.88

1.59–1.95

PUC

1.65^a

0.14

1.63

1.49–1.86

1.67^a

0.08

1.68

1.58–1.77

PUZ

1.76^a

0.27

1.81

1.37–2.02

1.71^a

0.08

1.73

1.61–1.78

PET

0.94^b

0.07

0.91

0.88–1.04

0.95^b

0.16

0.89

0.82–1.22

Significance

***

***