Table 1.

Effect of studied treatment modality on the mean values of pocket depth, clinical attachment level and radiographic three dimensional volume measurements (n=20)

	Pre	Post	t	P
CAL
Mean±SD	6.5±1	3.6±1	19.262*	<0.001*
Median (minimum-maximum)	6.7 (4.7-8.3)	3.3 (2.3-6.3)
PPD
Mean±SD	6.3±0.8	3.1±0.7	21.327*	<0.001*
Median (minimum-maximum)	6.5 (5-7.7)	3 (2.3-4.7)
3D volume of facial bone defects
Mean±SD	75.2±20	36.8±11.7	12.813*	<0.001*
Median (minimum-maximum)	72.2 (42.4-109.2)	35 (20.2-60.2)
3D volume of interproximal defects
Mean±SD	84.8±29	37.7±18.2	13.403*	<0.001*
Median (minimum-maximum)	80 (49.9-150)	37.6 (15.6-82.5)

*Statistically significant at P≤0.05. P - P value for comparing between pre and post; t - Paired t-test; PD - Pocket depth; PPD - Probing pocket depth; CAL - Clinical attachment level; SD - Standard deviation; 3D - Three dimensional