The ability of Staphylococcus aureus to form biofilm is considered to be a major virulence factor influencing its survival and persistence in both the environment and the host. Biofilm formation in S. aureus is most frequently associated with production of polysaccharide intercellular adhesion by ica operon-encoded enzymes. The present work aimed at evaluating the in vitro biofilm production and presence of the icaA and icaD genes in S. aureus isolates from a dental clinic in Konya, Turkey. The surfaces of inanimate objects were sampled over a period of six months. S. aureus isolates were subjected to Congo Red Agar (CRA) and crystal violet (CV) staining assays to evaluate their ability of biofilm production, while the presence of the icaA and icaD genes was determined by polymerase chain reaction. S. aureus contamination was detected in 13.2% of the environmental samples. All the 32 isolates were observed to be positive for both the icaA and icaD genes. Phenotypic evaluations revealed that CV staining assay is a more reliable alternative to CRA assay to determine biofilm formation ability. A high percentage of agreement (91%) was observed between the results from CV staining and ica genes' detection assays. Phenotypic and genotypic evaluations should be combined to detect biofilm formation in S. aureus. Our findings indicate that dental clinic environments should be considered as potential reservoir for biofilm-producing S. aureus and thus cross contamination.
These findings suggest that Er:YAG laser by PIPS-activated irrigation can be considered as an effective irrigant agitation technique in pediatric endodontics.
Marfan syndrome is an autosomal dominant disorder of connective tissue primarily characterized with anomalies affecting the musculoskeletal system, the
cardiovascular system and the eyes. It has been suggested that early diagnosis of the syndrome is important, because of the risk of infective endocarditis. A
7-year-old female was referred to our clinic, with a chief complaint of dental crowding in the anterior region of mandible. It was observed that the patient needed
multiple treatments based on detailed clinical and radiographic examinations. The treatment was carried out with antibiotic prophylaxis an hour prior to her
appointment considering her profound caries. The patient was advised to visit regularly for follow up and she was referred for orthodontic evaluation.
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