title: Backflow in low-volume suction lines: the impact of pressure changes.
abstract: A previous study indicated that fluid can flow backward in low-volume suction lines when patients close their lips around the saliva ejector tip. The authors investigated this phenomenon further. They documented physical and mechanical parameters of saliva ejector backflow in low-volume suction lines and concluded that backflow is possible but can be avoided with simple precautions.
authors.affiliation: University of North Carolina at Chapel Hill, School of Dentistry, Department of Dental Ecology-Dental Hygiene 27599-7450, USA.
authors.forename: G L
authors.initials: GL
authors.lastname: Mann
authors.forename: T L
authors.initials: TL
authors.lastname: Campbell
authors.forename: J J
authors.initials: JJ
authors.lastname: Crawford
mesh_terms: D003428:Cross Infection / Q000209:etiology*; D003748:Dental Equipment / Q000009:adverse effects*; D004866:Equipment Contamination; D006801:Humans; D011312:Pressure; D012463:Saliva; D013396:Suction / Q000295:instrumentation*; D014618:Vacuum