The Incidence of Clinical Injuries among Undergraduate Dental Students: A Prevention Protocol

Abstract

Dental students are frequently exposed to percutaneous injuries (PCIs) due to the nature of their clinical work, which involves sharp instruments and close patient contact. The COVID-19 pandemic further emphasized the need for stringent biosafety measures and the use of personal protective equipment (PPE). Despite these precautions, injuries remain prevalent, highlighting the need for comprehensive education and training in biosafety and infection control. This study investigates the incidence and causes of injuries among undergraduate dental students during clinical sessions. This study was conducted at the Department of Dentistry, National and Kapodistrian University of Athens, focusing on injuries reported from 2021 to 2024. Data were collected through self-reported clinical records. The primary variables assessed included the type of injury, the instrument involved, the clinical procedure performed, and the immediate actions taken post-injury. Serological testing was conducted on students and patients to assess the risk of the transmission of bloodborne pathogens. The findings reveal a high prevalence of injuries, with needles being the most common cause (51.4%), followed by other tools such as dental probes (25.7%) and burs (8.6%). The most frequent injury type is piercing (74.2%), primarily affecting the fingers (88.6%). Periodontal treatments, restorative procedures, and endodontic treatments are the main activities leading to injuries, with 17.1% of injuries being caused by each. No statistically significant results are recorded. Despite regular medical records for most patients treated by injured students, serological testing shows significant positivity rates for HCV and HBV. Notably, most injured students demonstrate their commitment to safety by adhering to recommended post-exposure protocols, including wound cleaning, disinfecting, and serological testing. Furthermore, the impact of COVID-19 heightened the importance of personal protective equipment (PPE) and reinforced occupational health standards. Our study highlights the critical need for enhanced biosafety awareness and training among undergraduate dental students to reduce injury risks.