Seroepidemiology of hepatitis C antibodies among dentists and their self-reported use of infection control measures.

OBJECTIVES: To determine the prevalence of hepatitis C virus (HCV) antibodies among dentists graduated from various countries and assess the use of infection control measures in their dental practice. RESEARCH DESIGN: The study included 301 Israeli dentists who attended an annual dental conference. Participants filled out a structured questionnaire regarding demographic (age, gender, number of siblings, number of children) and occupational characteristics. Venous blood was examined for presence of HCV antibodies by enzyme immunoassay and confirmed by a third generation line immunoassay, which assesses antibodies to HCV-core antigens (INN-LIA HCV Ab III update, 100% sensitivity, 100% specificity). RESULTS: The prevalence of HCV antibodies among Israeli dentists was 1/301 (0.33%), similar to the prevalence range (0.1-0.5%) among the general Israeli population. The studied population included dentists (30.6%) who immigrated from Asia, Eastern Europe and the former USSR, where HCV prevalence ranges from 3.1% to 26.5%. Dentists routinely used gloves (99.6%), gown (93.3%), autoclaves (90.3%), dry heat (29.1%) and mask (81%). Dentists who graduated after 1985 used a mask or gown significantly more often than dentists who graduated before 1985 (p < 0.001 and p = 0.004, respectively). CONCLUSION: It seems that dentists who usually adhere to basic infection control measures are not at an increased risk for HCV.