title: An unusual facial sinus.
authors.forename: J R
authors.initials: JR
authors.lastname: Mayne
mesh_terms: D001047:Apicoectomy; D017577:Cutaneous Fistula / Q000628:therapy*; D003751:Dental Fistula / Q000628:therapy*; D005148:Facial Dermatoses / Q000628:therapy*; D006801:Humans; D010483:Periapical Diseases / Q000601:surgery / Q000628:therapy; D012390:Root Canal Therapy