Table 3. Comparison of the changes in clinical attachment level between treatment and three to six months of follow-up.

Defect	Site	n	Baseline to three months		Three months to six months		Baseline to six months
			Mean±SD	P-value	Mean±SD	P-value	Mean±SD	P-value
Horizontal	Interdental CAL	68	0.70±0.36	<0.001	0.05±0.24	0.244	0.75±0.38	<0.001
	Total CAL	204	1.02±0.61	<0.001	0.16±0.53	0.086	1.18±0.68	<0.001
Vertical	Interdental CAL	68	0.39±0.38	<0.001	0.06±0.31	0.239	0.46±0.39	<0.001
	Total CAL	204	0.72±0.51	<0.001	0.02±0.47	0.856	0.74±0.46	<0.001
Horizontal	Interdental CALD	68	1.02±0.92	<0.039	0.16±0.61	0.172	1.18±1.01	<0.005
	Total CALD	204	0.70±0.81	<0.001	0.05±0.55	0.791	0.75±0.88	<0.001
Vertical	Interdental CALD	68	0.72±0.71	<0.039	0.02±0.64	0.172	0.74±0.77	<0.005
	Total CALD	204	0.39±0.78	<0.001	0.06±0.57	0.791	0.46±0.81	<0.001

SD, standard deviation; CAL, clinical attachment level; CALD, difference in clinical attachment level changes.