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

Table 2

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

	Mean (SD)		value of paired -test
	Test	Control
Baseline	4.78 (0.14)	4.50 (0.11)	<0.0001
After 1 day	3.85 (0.07)	2.74 (0.13)	<0.0001
After 7 days	4.53 (0.08)	3.49 (0.09)	<0.0001
After 14 days	4.77 (0.22)	4.49 (0.11)	0.002
value of paired -test	0.61	0.81

Statistically significant at .