title: False negative result.
authors.forename: J A
authors.initials: JA
authors.lastname: Loudon
mesh_terms: D003773:Dental Plaque / Q000175:diagnosis* / Q000517:prevention & control*; D003793:Dental Restoration, Permanent / Q000009:adverse effects*; D005881:Gingiva / Q000503:physiopathology*; D006801:Humans; D009910:Oral Hygiene / Q000379:methods*; D009971:Orthodontics, Corrective / Q000009:adverse effects*; D010510:Periodontal Diseases / Q000175:diagnosis* / Q000517:prevention & control*; D010808:Physical Examination / Q000379:methods*; D012390:Root Canal Therapy / Q000009:adverse effects*