Table 3.

Intragroup comparison of mean lesion depth from pretreatment to posttreatment

Group		Mean	N	Std. deviation	p-value
• Low-fluoridated	Pre	148.3209	12	1. 11,698	0.002, S
	Post	116.3863	12	2. 04,113
• Nonfluoridated	Pre	128.6523	12	1. 71,229	0.01,S
	Post	122.13	12	4.78
• Herbal nonfluoridated	Pre	125.4579	12	1. 80,908	0.002,S
	Post	114.3695	12	2. 10,891