Table 5.

Linear regression analysis of RET with DMFT score and S arch DG characteristic.

	DMFT score	S arch DG characteristic
R	0.30	0.2
R square	0.07	0.04
Adjusted R square	0.061	0.034
Std. error of the estimate	4.97	1.88
Sum of squares	3875.1	542.831
df	147	147
F value	10.47	6.11
Sig. (p value)	0.001	0.015
Unstandardized coefficients (B)	-0.35	0.10