title: Endodontic retreatment of dens invaginatus presenting with gutta-percha overfilling at the attached gingiva and chronic apical periodontitis: unusual clinical report.
abstract: OBJECTIVE
  This work describes the retreatment of an unusual case of dens invaginatus with gutta-percha overfilling at the gingival mucosa and chronic apical periodontitis in a 34-year-old woman. Initial periapical radiograph showed the presence of type II dens invaginatus with poor quality obturation, root perforation and chronic apical periodontitis of tooth 22.
  
  
  BACKGROUND
  Dens invaginatus is a tooth malformation caused by infolding of the dental papilla during tooth development. This anomaly has been associated with increased prevalence of pulpal and periapical diseases.
  
  
  METHODS
  Conventional endodontic retreatment was performed using rotary files and calcium hydroxide paste as intracanal dressing. After 7 days, root canal was filled with guttapercha points and Sealapex® sealer. Obturation was radiographically followed and, after 3 years, absence of fistula and periapical radiolucency was observed, thus conventional endodontic therapy proved to be successful.
  
  
  CONCLUSIONS
  Conventional endodontic retreatment of type II dens invaginatus has been successful for a 3-year period, showing a better treatment alternative.
  
  
  CONCLUSIONS
  Conservative endodontic retreatment of dens invaginatus should be considered to promote periapical healing with complete reconstitution of bone and periodontal ligament regeneration without signs of recurrence over a period of 3 years. Moreover, it preserves the entire tooth.
authors.affiliation: Professor, Department of Clinics and Surgery, Alfenas Federal University, Minas Gerais, Brazil.
authors.forename: Carlos Roberto Colombo
authors.initials: CR
authors.lastname: Robazza
authors.forename: Julio Cesar
authors.initials: JC
authors.lastname: Alves e Motta
authors.forename: Marina Lara
authors.initials: ML
authors.lastname: de Carli
authors.forename: Fernanda Rafaelly
authors.initials: FR
authors.lastname: de Oliveira Pedreira
authors.forename: Joao Adolfo Costa
authors.initials: JA
authors.lastname: Hanemann
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003719:Dens in Dente / Q000628:therapy*; D003751:Dental Fistula / Q000209:etiology / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D005547:Foreign Bodies / Q000209:etiology* / Q000628:therapy; D005881:Gingiva / Q000473:pathology*; D006171:Gutta-Percha / Q000009:adverse effects*; D006801:Humans; D007180:Incisor / Q000002:abnormalities; D010485:Periapical Periodontitis / Q000209:etiology* / Q000628:therapy; D016300:Radiography, Bitewing; D019233:Retreatment; D012387:Root Canal Filling Materials / Q000009:adverse effects*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012390:Root Canal Therapy / Q000009:adverse effects*; D014092:Tooth Root / Q000293:injuries
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha