title: Risk factors of gingival injuries in plaque removal by toothbrushing.
authors.forename: M L
authors.initials: ML
authors.lastname: Niemi
mesh_terms: D003773:Dental Plaque / Q000628:therapy*; D004867:Equipment Design; D005260:Female; D005881:Gingiva / Q000293:injuries* / Q000648:ultrastructure; D005891:Gingivitis / Q000473:pathology; D006801:Humans; D008597:Menstrual Cycle; D008855:Microscopy, Electron, Scanning; D012307:Risk Factors; D013499:Surface Properties; D014099:Toothbrushing / Q000009:adverse effects* / Q000295:instrumentation