Table 5. Intragroup and intergroup comparisons of radiographic bone level at the test and control sites.

Variables	Site	Duration	Mean±SD	Mean difference	P value
Intragroup	Test group	Baseline	2.80±0.83	0.50	0.000a)
		6 mon	2.30±0.86
	Control group	Baseline	2.90±1.07	0.45	0.107
		6 mon	2.45±0.82
Intergroup	Test group	Baseline	2.80±0.83	−0.10	0.744
	Control group		2.90±1.07
	Test group	6 mon	2.30±0.86	−0.15	0.578
	Control group		2.45±0.82

SD: standard deviation.

^a)P<0.05, statistically significant.