Table 2.

One-way ANOVA analysis for tooth L, a, and b values.

	Sum of squares	df	Mean square	F	Significance
TL
Between groups	145.265	3	48.422	3.917	0.009
Within groups	2991.633	287	12.362
Total	3136.898	300
Ta
Between groups	13.134	3	4.378	3.352	0.020
Within groups	316.098	287
Total	329.232	300
Tb
Between groups	252.172	3	84.057	4.785	0.003
Within groups	4503.026	287	17.566
Total	4250.854	300