Table 5.

Pairwise comparison of colony-forming units formed for all the three groups

Location of plates	Groups	Significance*
Patient’s chest	Group I versus Group II	>0.05‡
	Group I versus Group III	<0.05†
	Group II versus Group III	<0.05†
Patient’s right side	Group I versus Group II	>0.05‡
	Group I versus Group III	<0.05†
	Group II versus Group III	<0.05†
Patient’s left side	Group I versus Group II	>0.05‡
	Group I versus Group III	<0.05†
	Group II versus Group III	<0.05†

*P derived from independent t-test; ^‡P>0.05 considered statistically nonsignificant; ^†P<0.05 considered statistically significant. Group I – Chlorhexidine as ultrasonic coolant; Group II: Cinnamon extract as ultrasonic coolant; Group III – Distilled water as ultrasonic coolant