Table 1. Difference in mean lesion depth between groups before and after pH cycling.

*Paired t-test

Groups	Lesion depth (Mean ± SD)		Mean difference	t-value	p-value
	Baseline*	Post-cycle*
Group A (Tri-calcium phosphate dentifrice)	535.66 ± 25.22	240.68± 26.68	294.98 ± 37.42	23.64	0.000*
Group B (Amine fluoride dentifrice)	543 ± 33.76	262.21 ± 28.04	280.78 ± 46.33	18.18	0.000*
Group C (Theobromine dentifrice)	552.44± 42.09	375.30 ± 15.37	177.13 ± 44.64	11.90	0.000*