title: The use of cone-beam computed tomography in the preservation of pulp vitality in a maxillary canine with type 3 dens invaginatus and an associated periradicular lesion.
abstract: BACKGROUND
  Dens invaginatus type 3 is an anomaly characterized by an invagination of enamel and dentin that can extend up to the root apex. It may pose treatment challenges when nonsurgical root canal therapy is deemed necessary. Conventional diagnostic aids such as periapical radiographs play an important role in the assessment of complex root canal morphologies. However, these modalities may sometimes yield insufficient diagnostic information. Cone-beam computed tomographic imaging produces 3-dimensional digital images and provides the clinician with a more in-depth understanding of the true morphology of the root canal system.
  
  
  METHODS
  This case report describes the diagnosis and conservative treatment of an unusual case of a maxillary canine with an infected type 3 dens invaginatus and an associated periradicular lesion in which the vitality of the surrounding pulp was maintained. Mineral trioxide aggregate was used to fill the entire invagination, whereas the circular true root canal system around the invagination with vital pulp was left untreated.
  
  
  RESULTS
  At the 1-year follow-up examination, clinical and radiographic findings showed that a diligent nonsurgical endodontic treatment can result in satisfactory periradicular healing and complete root formation.
  
  
  CONCLUSIONS
  The use of cone-beam computed tomographic imaging as an auxiliary tool for both diagnosis and planning the treatment of these anomalies is highlighted.
authors.affiliation: Department of Restorative Dentistry and Endodontics, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: Teixidó
authors.affiliation: Department of Restorative Dentistry and Endodontics, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain.
authors.forename: Francesc
authors.initials: F
authors.lastname: Abella
authors.affiliation: Department of Restorative Dentistry and Endodontics, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Duran-Sindreu
authors.affiliation: Department of Restorative Dentistry and Endodontics, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain.
authors.forename: Saddy
authors.initials: S
authors.lastname: Moscoso
authors.affiliation: Department of Restorative Dentistry and Endodontics, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona, Spain. Electronic address: mroig@uic.es.
authors.forename: Miguel
authors.initials: M
authors.lastname: Roig
mesh_terms: D000293:Adolescent; D017607:Aluminum Compounds / Q000627:therapeutic use; D017610:Calcium Compounds / Q000627:therapeutic use; D003188:Composite Resins / Q000737:chemistry; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003481:Cuspid / Q000002:abnormalities* / Q000000981:diagnostic imaging; D003719:Dens in Dente / Q000000981:diagnostic imaging* / Q000628:therapy; D003764:Dental Materials / Q000737:chemistry; D003782:Dental Pulp / Q000000981:diagnostic imaging; D003786:Dental Pulp Cavity / Q000002:abnormalities* / Q000000981:diagnostic imaging; D003793:Dental Restoration, Permanent / Q000379:methods; D004338:Drug Combinations; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008437:Maxilla / Q000000981:diagnostic imaging; D008768:Methylmethacrylates / Q000627:therapeutic use; D010087:Oxides / Q000627:therapeutic use; D010347:Patient Care Planning; D010482:Periapical Abscess / Q000000981:diagnostic imaging* / Q000628:therapy; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D017640:Silicates / Q000627:therapeutic use; D015035:Zinc Oxide-Eugenol Cement / Q000627:therapeutic use
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003188:Composite Resins; D003764:Dental Materials; D004338:Drug Combinations; D008768:Methylmethacrylates; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; D015035:Zinc Oxide-Eugenol Cement; C086631:mineral trioxide aggregate; C031667:IRM cement
keywords: Cone-beam computed tomography; dens in dente; dens invaginatus; maxillary canine