Table 4 Intragroup and intergroup comparison of the 7 dimensions and the total score of the OHIP-14

0.73 (1.22)^a

2.53 (2.06)^b

1.93 (1.28)^ab

0.031^*

0.73 (1.10)^a

2.60 (1.18)^b

2.13 (1.88)^ab

0.010^*

0.06 (− 1.21–1.34) 0.916^**

0.20 (− 1.02–1.42)

0.740^***

2.47 (1.80)^a

3.93 (2.15)^b

2.87 (2.03)^ab

0.048^*

1.80 (1.14)^a

3.87 (1.76)^b

2.40 (1.50)^a

0.001^*

0.13 (− 1.36–1.63)

0.859^**

− 0.50 (− 1.90–0.88)

0.463^***

3.87 (2.41)^a

2.40 (2.61)^a

1.60 (2.26)^a

0.088^*

2.53 (2.16)^a

2.47 (2.13)^a

2.00 (1.55)^a

0.646^*

0.26 (− 1.61–2.14)

0.774^**

0.32 (− 1.22–1.68)

0.673^***

0.73 (1.16)^a

0.87 (1.06)^a

0.47 (0.83)^a

0.391^*

0.47 (0.74)^a

1.93 (2.05)^a

1.00 (1.36)^a

0.065^*

1.07 (− 0.18–2.33)

0.091^**

0.59 (− 0.26–1.44)

0.167^***

3.13 (2.29)^a

2.20 (1.74)^a

1.53 (1.76)^a

0.196^*

1.27 (1.38)^a

1.47 (1.76)^a

0.67 (0.72)^a

0.051^*

− 0.94 (− 2.43–0.54)

0.206^**

− 1.15 (− 2.28–0.03)

0.052^***

1.60 (1.84)^ab

1.20 (1.74)^a

0.53 (0.99)^b

0.038^*

0.60 (1.12)^ab

0.67 (1.17)^a

0.13 (0.35)^b

0.009^*

− 0.31 (− 1.48–0.85)

0.583^**

− 0.32 (− 0.91–0.26)

0.272^***

0.80 (1.14)^a

0.40 (0.82)^ab

0.00 (0.00)^b

0.030^*

0.40 (0.73)^a

0.40 (0.82)^ab

0.07 (0.25)^b

0.049^*

0.02 (− 0.61–0.67)

0.930^**

0.06 (− 0.08–0.20)

0.390^***

13.33 (8.04)^ab

13.53 (7.12)^a

8.93 (5.67)^b

0.026^*

7.80 (6.80)^ab

13.40 (8.49)^a

8.33 (5.86)^b

0.040^*

− 0.08 (− 6.49–6.32)

0.978^**

− 0.70 (− 5.41–4.01)

0.762^***