Analysis of glucosyltransferase gene expression of clinical isolates of Streptococcus mutans obtained from dental plaques in response to sub-lethal doses of photoactivated disinfection.

Background: Dental caries is a disease caused by a group of oral streptococcal microorganisms, primarily Strptococcus mutans. Photoactivated disinfection (PAD) has been proposed as a conservative method for treatment of carious lesions. Therefore, the aim of this study was to assess the effectiveness of indocyanine green (ICG)- and toluidine blue O (TBO)-PAD as supplementary tools in reducing the bacterial load and expression profiling of the gene associated with the biofilm formation in S.

Antimicrobial activity of photodynamic therapy in combination with colistin against a pan-drug resistant Acinetobacter baumannii isolated from burn patient.

Nosocomially-acquired multi-, extensively-, and pandrug resistant (MDR, XDR, and PDR) strains of microorganisms such as Acinetobacter baumannii remain a serious cause of infection and septic mortality in burn patients. Treatment of patients with nosocomial burn wound infections is often complicated by drug-resistant strains of A. baumannii.

The efficacy of photodynamic and photothermal therapy on biofilm formation of Streptococcus mutans: An in vitro study.

Background: The alternative antibacterial treatments of photodynamic therapy (PDT) and photothermal therapy (PTT) significantly affect microbiota inactivation. The aim of the present research was the assessment of the antimicrobial and anti-biofilm effects of PDT with toluidine blue O (TBO) and PTT with indocyanine green (ICG) on Streptococcus mutans as a cariogenic bacterium.

Materials And Methods: The S.