title: Continued root formation after replantation and root canal treatment in an avulsed immature permanent tooth: a case report.
abstract: This case report describes the continued root formation following replantation and conventional root canal therapy of a traumatically avulsed open-apex tooth with suppurative apical periodontitis. A 7-year-old male patient had an avulsed upper left central incisor (tooth 21) replanted approximately 50 min after traumatic avulsion. A root canal procedure was initiated due to pulp necrosis and periapical abscess detected in the follow-up period. After endodontic treatment with calcium hydroxide (Ca(OH)(2)) dressing, a normal root length developed including an apical segment beyond the hard tissue barrier. Regeneration of the root occurred without pathology or ankylosis at 1-year of follow up.
authors.affiliation: Department of Dentistry Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC.
authors.forename: Su-Hsin
authors.initials: SH
authors.lastname: Wang
authors.forename: Ming-Pang
authors.initials: MP
authors.lastname: Chung
authors.forename: Wen-Song
authors.initials: WS
authors.lastname: Su
authors.forename: Jen-Chan
authors.initials: JC
authors.lastname: Cheng
authors.forename: Yi-Shing
authors.initials: YS
authors.lastname: Shieh
mesh_terms: D002648:Child; D003790:Dental Pulp Necrosis / Q000150:complications / Q000628:therapy; D006801:Humans; D007180:Incisor / Q000293:injuries*; D008297:Male; D008437:Maxilla; D010482:Periapical Abscess / Q000150:complications / Q000628:therapy*; D012038:Regeneration; D012390:Root Canal Therapy / Q000379:methods; D019227:Tooth Apex / Q000254:growth & development* / Q000502:physiology; D014084:Tooth Avulsion / Q000150:complications / Q000601:surgery*; D019228:Tooth Crown / Q000293:injuries; D014082:Tooth Fractures / Q000150:complications / Q000628:therapy; D014090:Tooth Replantation