title: Air cleaning devices for reduction in number of airbone bacteria.
mesh_terms: D000336:Aerosols; D000389:Air Conditioning / Q000295:instrumentation*; D000391:Air Microbiology / Q000517:prevention & control*; D001412:Bacillus subtilis; D011232:Chemical Precipitation; D003737:Dental Cavity Preparation; D003755:Dental High-Speed Technique; D003770:Dental Offices; D004560:Electricity; D008722:Methods; D014691:Ventilation
chemical_list: D000336:Aerosols