Table 1. Principal component axes, eigenvalues and percent variation for the entire sample of 175 teeth.

PC	Eigenvalue	% variance	Associated variables
1	0.382950	76.036	DS
2	0.061111	12.134	LCH, LCW
3	0.027375	5.435	RH, CH, DCL, MCL
4	0.014626	2.904
5	0.007384	1.466
6	0.002935	0.583
7	0.002568	0.510
8	0.001563	0.310
9	0.000865	0.172
10	0.000830	0.165
11	0.000608	0.121
12	0.000546	0.108
13	0.000158	0.031
14	0.000098	0.020
15	0.000025	0.005