Meral ÖZALP, Ömer Engin BULUT, Atilla Stephan ATAÇ, Melike EKİZOĞLU, Didem KART, Hakan Hamdi ÇELİK, İlkan TATAR

The effect of hydrogen peroxide/colloidal silver on reducing the colonization and growth of heterotrophic bacteria in dental unit waterlines

The objective of the present study was to investigate reduction in the colonization and growth of heterotrophic bacteria in dental unit waterlines by using hydrogen peroxide/colloidal silver as disinfectant. Twenty-seven dental units were included; 6 units that were more than 20 years old and 7 units that had been in use for 2 years comprised the old and new treatment groups, respectively. Fourteen units served as controls. The treatment groups were disinfected continuously and every 4 weeks shock doses were applied over a 20-week period. Water samples were taken before treatment, 1 and 2 weeks after treatment, and thereafter every 4 weeks; then they were inoculated onto R2A agar plates. While 1-16-week results for the old treatment group showed total heterotrophic bacterial counts of higher than 1 × 105 cfu/mL, at 20 weeks they were below 7.5 × 102 cfu/mL. Only 2 units were able to reach levels of

Anahtar Kelimeler:

Key words: Biofilm, aerobic heterotrophic bacterial count, dental unit waterlines, hydrogen peroxide/colloidal silver

The effect of hydrogen peroxide/colloidal silver on reducing the colonization and growth of heterotrophic bacteria in dental unit waterlines

Keywords:

Key words: Biofilm, aerobic heterotrophic bacterial count, dental unit waterlines, hydrogen peroxide/colloidal silver,

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