Table 3 Changes in centroid size of dental arch from age 12 through 15 to age 18 years.

From: Adolescent dental arch development among Southern Chinese in Hong Kong: a geometric morphometric approach

 

Age (years)

Centroid size

p-value

Pair-wise comparison

p-value

Mean ± SD

Age pair

Mean ± SD

Upper

12

1046.11 ± 49.95

 

12 vs 15

−9.43 ± 18.59

p < 0.001***

 

15

1036.67 ± 51.35

p < 0.001***

15 vs 18

3.46 ± 35.33

p = 0.15ns

 

18

1040.13 ± 43.84

 

12 vs 18

−5.98 ± 35.91

p < 0.05*

Lower

12

883.46 ± 46.06

 

12 vs 15

−9.84 ± 15.31

p < 0.001***

 

15

873.62 ± 48.07

p < 0.001***

15 vs 18

1.46 ± 26.26

p = 0.41ns

 

18

875.08 ± 50.80

 

12 vs 18

−8.38 ± 29.02

p < 0.001***

  1. nsp > 0.05; *p < 0.05; ***p < 0.001.