Comparison of Piezosurgery and Conventional Rotary Instruments for Removal of Impacted Mandibular Third Molars: A Randomized Controlled Clinical and Radiographic Trial

Table 3

Comparison of swellings between test and control at different follow-up periods (in millimeters).

	Mean (SD)		value of paired -test
	Test	Control
Baseline	11.21 (0.07)	11.27 (0.05)	0.001
After 1 day	11.55 (0.08)	12.32 (0.04)	<0.0001
After 7 days	11.29 (0.08)	11.78 (0.12)	<0.0001
After 14 days	11.20 (0.04)	11.30 (0.15)	0.03
value of paired -test	0.43	0.46

Statistically significant at .