Table 5.

Number of colony-forming units per plate detected corresponding to the location in the room

Positions	Description	Control	MFPW	PSC
1	On the operator’s tray	23.5 (5.447)	4.6* (1.342)	5† (0.707)
2	Next to the dental chair, on the right side	12.75 (3.593)	3.4* (0.894)	3.2† (2.049)
3	In the middle of the chair	21.2 (8.983)	6.2* (1.789)	13.4† (3.130)
4	On the head of the operator	28.25 (11.758)	6.2* (1.923)	7.8† (3.033)
5	On the head of the assistant	23.75 (14.244)	4.6* (2.702)	5.6† (2.408)
6	Near the wall behind the dental chair	26.5 (9.256)	4* (1.225)	5.8† (2.489)

Data are presented as mean (SD), *P<0.05 when compared between control and MFPW groups, ^†P<0.05 when compared between control and PSC groups