Skip to main content

Table 1 Comparison of microbial contamination between the different study groups at the baseline phase

From: In vitro evaluation of microbial contamination and the disinfecting efficacy of chlorhexidine on orthodontic brackets

Groups

Microbial contamination

P value

Absent, n (%)

Present, n (%)

Group 1

17 (56.7)

13 (43.3)

< 0.001*

Group 2

23 (76.7)

7 (23.3)

Group 3

13 (43.3)

17 (56.7)

Group 4

6 (20.0)

24 (80.0)

Group 5

10 (100.0)

0

Group 6

0

10 (100.0)

  1. Group 1, American Orthodontics brackets; Group 2, 3M Unitek; Group 3, Ortho Organizers; Group 4, China Dental Orthodontic Brackets; Group 5, negative control; Group 6, positive control
  2. *Statistically significant at 95% confidence interval