0586927 - ÚCHP 2025 CH eng A - Abstract
Mašková, Ludmila - Ždímal, Vladimír - Ondráček, Jakub - Schwarz, Jaroslav - Bradna, P. - Pelclová, D.
Personal exposure to particulate matter during grinding of dental nanocomposite.
Program. Vol. Session 13. 2024. ISBN N.
[ETH Nanoparticle Conference /27./. 10.06.2024-14.06.2024, Zurich]
R&D Projects: GA MŠMT(CZ) LM2023030
Institutional support: RVO:67985858
Keywords : nanoparticles * dental nanocomposite * particle size distribution
OECD category: Toxicology
Result website:
https://npc24.scg.ch/program/fri-june-14-2024

During abrasive operations in dental offices, particles of different sizes are released into the air. Currently used dental composites may contain 50 – 70 % of nanosized filler particles. There is a serious concern that medical staff could inhale nanoparticles during composite procedures and that this could have a negative effect on their health. 24 participants were exposed to aerosol particles during four dental nanocomposite grinding experiments (6 participants per experiment). Novel active personal nanoparticle samplers (PENS, PM4-0.1 and PM0.1) were used to determine personal exposure, and the results were compared with the data from a Berner Low Pressure Impactor (BLPI, 10 size fractions in the range 0.026 – 13.7 μm) and a tandem of online instruments including a Scanning Mobility Particle Sizer (SMPS) and an Aerodynamic Particle Sizer (APS) measuring in the size range 0.01 – 20 μm.
Permanent Link: https://hdl.handle.net/11104/0354295