Males Females All cases P
Mean (SD) Mean (SD) Mean (SD)
Right
D1 16.59 (3.25) 14.74 (3.58) 15.65 (3.54) 0.000a
D2 9.41 (1.65) 8.49 (1.57) 8.95 (1.68) 0.000a
D3 4.11 (1.43) 4.06 (1.23) 4.09 (1.33) 0.747b
D4 2.52 (0.84) 2.22 (0.74) 2.37 (0.8) 0.001a
Left
D1 16.71 (3.24) 14.78 (3.66) 15.73 (3.59) 0.000a
D2 9.55 (1.65) 8.38 (1.51) 8.96 (1.68) 0.000a
D3 4.17 (1.42) 4.06 (1.33) 4.11 (1.37) 0.511b
D4 2.43 (0.83) 2.24 (0.71) 2.33 (0.78) 0.042a

aSignificant, independent samples t-test (significance level P < 0.05).
bNot significant, independent samples t-test (significance level P < 0.05).
D1 = upper distance; D2 = lower distance; D3 = buccal distance; D4 = lingual distance; n = number of cases; SD = standard deviation.