Tooth Regression equation r R2 S.E.E p-value
Canine = 69.6 + (–332X PTR C) -0.941 88.6% 4.700 0.00
1st premolar = 67.8 + (-324X PTR PM1) -0.914 83.5% 5.66 0.00
2nd premolar = 69.2 + (- 336 X  PTR PM2) -0.947 89.6% 4.48 0.00
Canine+1st premolar = 70.0 + (- 242 X PTR C) + (-97.4X PTR PM1) -0.947 89.6% 4.49 0.00
Canine+2nd premolar = 70.1+( - 150X PTR C)  ) + (-192X PTR PM2) -0.956 91.3% 4.11 0.00
1st premolar+2nd premolar = 69.5+(- 72.6X PTR PM1) + (-268X PTR PM2) -0.949 90.1% 4.38 0.00
All three teeth =70.2 + (-139X PTR C) + ( -28.4X PTR PM1) + (-176 X PTR PM2) -0.956 91.4% 4.10 0.00
Table 3: Regression coefficients and equations for the canine, 1st premolar, 2nd premolar, and various tooth combinations.