Abstract
Objective: To determine the distribution of Staphylococcus aureus (S. aureus) aerosols in the immediate environment of dental operators during routine dental treatment and to investigate the reduction in S. aureus colonization using 0.5% hydrogen peroxide/colloidal silver disinfectant were aimed.
 Materials and Methods: The study was divided into two groups. Sterile distilled water was used in Group A (n = 90 Petri plates). Sterile distilled water with hydrogen peroxide/colloidal silver was used in Group B (n = 90 Petri plates). The plates were set up seperately in two directions on the head phantom corresponding to the 6 and 9 o’clock positions. Three petri plates were placed side by side up to 50 cm, 100 cm and 200 cm distances, and the experimental design were proceeded by contaminating with S. aureus (ATCC 29213). Mann Whitney U test was used for comparing to independent samples.
 Results: When compared to Group A, S. aureus grown colonies on agar plates in Group B was significantly decreased in directions corresponding to the 6 and 9 o’clock positions to 50 cm, 100 cm, and 200 cm distances (p = 0.00).
 Conclusion: H2O2/Colloidal-Ag can safely be used as a supportive precaution against S. aureus.
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