Assessment of occupational risks of bloodborne infectious diseases for dental personnel

BACKGROUND: Awareness of dental workers about the epidemiology of blood-borne infections (HIV, hepatitis B virus [HBV], and hepatitis C virus infections) and knowledge about actions to take if accidents occur in the workplace such as contact with blood and other biological fluids are a key link in the prevention of these infections.

AIMS: To assess awareness and adherence of dental personnel to the algorithm of postexposure prophylaxis of occupational infections with blood-borne pathogens.

MATERIALS AND METHODS: This descriptive crosssectional study enrolled the dental staff of public and private dental clinics in Kazan, Russia. A survey of 173 dental staff was conducted in February–March 2023. The rates of incidents caused by contact with blood and their nature among dental staff were determined, and the frequency of correctly performed algorithm of actions during an incident was calculated. The frequency of the implementation of measures for the prevention of occupational infections with blood-borne pathogens was estimated. Categorical data were described as absolute values and proportions (%).

RESULTS: In total, 65 specialists (37.6%) had encountered incidents such as contact with blood at the workplace. These incidents were significantly more common among women than among men: 44.7% (55/123) vs. 20.0% (10/50), respectively (p=0.002). The last incident in 50 respondents was associated with skin damage (needlestick injury or cut exposure); in 17 participants, their mucous membranes were exposed to blood (including two people with a mixed characteristic of incident: skin damage + exposure of their mucous membranes to blood). After contact with blood, local treatment was carried out correctly (according to Russian recommendations) in 18.0% of the participants with skin damage and 70.5% with blood exposure to mucous membranes. After the incident, 58.5% of the participants (38/65) reported to the head of the department or clinic, and a third of the respondents (23/65, 35.4%) recorded a case of contact with blood in the incident log. Nearly all respondents always use gloves (172/173, 99.4%) when they work in the dental office. Moreover, 64.2% of the respondents (111/173) always use safety glasses or screens. Nine respondents (9/173, 5.2%) do not use personal eye protection. Others (53/173, 30.6%) wear safety glasses/screens only when performing certain procedures. In addition, 85.0% (147/173) of the respondents have been vaccinated against HBV, 18 have not been vaccinated (10.4%), and 8 (4.6%) do not know their vaccination status.

CONCLUSIONS: The results of this study present the necessity of raising awareness among dental staff regarding the epidemiology and prevention of blood-borne infections to reduce the risk of occupational infections.