Table 2 Regression parameters for the prediction equations of the sum of widths of un-erupted mandibular and maxillary canine and premolar teeth according to sex of the children

Girls (n = 135)

Mandibular canines and premolars

0.84

5.73

0.68

0.61-0.75

0.37

<0.001

Maxillary canines and premolars

0.79

8.49

0.57

0.50-0.65

0.39

<0.001

Boys (n = 85)

Mandibular canines and premolars

0.79

7.34

0.62

0.51 - 0.72

0.52

<0.001

Maxillary canines and premolars

0.77

9.32

0.54

0.45 - 0.64

0.50

<0.001

Combined (n = 220)

Mandibular canines and premolars

0.83

6.25

0.66

0.60 - 0.72

0.31

<0.001

Maxillary canines and premolars

0.78

8.72

0.57

0.51 - 0.63

0.30

<0.001