Evaluation of the presence of pathogenic bacteria in aerosols generated by high-speed parts
Introduction: The identification of pathogenic bacteria generated by the aerosols of the high parts is important because it allows to know the dental work environment, the disinfection processes and the risks to which the dental staff is exposed.
Objective: Determine the presence of pathogenic bacteria in aerosols generated by high-speed handpieces in a dental clinic.
Methods: Descriptive cross-sectional study in which the presence of pathogenic bacteria generated by high-speed handpieces was evaluated. 42 randomly selected dental units were evaluated, which were being used in clinical aerosol generating activities. The plate sedimentation technique was used for the microbiological study of the environment.
Results: In the operating procedures, growth was observed in 31.0%, followed by prophylaxis in 11.9% (5) and endodontics in 9.5% (4). In the analyzed samples, gram positive bacteria predominated: Staphylococcus sp in 40.7% (11), Streptococcus sp in 11.1% (3), gram positive bacilli in 25.9% (7) and Micrococcus sp with 3.7% (1).
Conclusion: The high part increases the amount of aerosols during the operating procedures, followed by prophylaxis. The bacteria that were found in greater quantity correspond to gram positive cocci type Staphylococci sp. However, the quality conditions of the clinic are adequate, it is important to continue strengthening all the processes and procedures that lead to the provision of the service under biosafety parameters.
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