background and aims. basic periodontal treatment aims at eliminating supra- and sub-gingival plaque and establishing conditions which will allow effective self-performed plaque control. this aim is primarily achieved with sonic and ultrasonic scalers. however, generation of bacterial aerosols during these procedures is of great concern to patients, the dentist and the dental assistant. the aim ...

Background and aims. Basic periodontal treatment aims at eliminating supra- and sub-gingival plaque and establishing conditions which will allow effective self-performed plaque control. This aim is primarily achieved with sonic and ultrasonic scalers. However, generation of bacterial aerosols during these procedures is of great concern to patients, the dentist and the dental assistant. The aim ...

BACKGROUND AND OBJECTIVES In recent years, ultrasonics has gained prime importance and is considered a valuable tool in the dentist's armamentarium. Studies have confirmed that an aerosolized bacterial contamination is produced during the use of ultrasonic scalers. AIM To evaluate and compare the efficacy of preprocedural mouthrinsing using a bis-biguanide (chlorhexidine gluconate 0.2%) and h...

Background: Effective removal of aerosols generated during dental treatment is crucial for maintaining biosafety in practice. This study aimed to measure the aerosol amount and number aerobic bacteria air caries treatment. Methods: The involved 50 molar teeth (n = 50) mandible patients divided into two groups based on type a high-volume evacuator (HVE); G1 25) conventional HVE (EM19 EVO, Monoar...

The purpose of a gun bore evacuator on the turret-mounted barrel is to prevent entry gaseous products propellant combustion into turret compartment vehicle after breech block opening. mathematical model which takes account all main parameters influencing pressure change inside cylinder was developed. Differential equations that describe flow field through nozzle in wall and were solved numerica...