title: Diagnosis and endodontic treatment of type II dens invaginatus by using cone-beam computed tomography and splint guides for cavity access: a case report.
abstract: BACKGROUND
  Dens invaginatus (DI) is defined as a rare dental malformation. The inherent structural variants of this anatomic disorder make it difficult to perform conventional endodontic treatment procedures by means of a conservative access cavity. In this clinical case report, the authors describe the treatment of a type II DI by means of guided splints for cavity access.
  
  
  METHODS
  This is a clinical report of a case of type II DI in a maxillary lateral incisor. The authors established the diagnosis by means of cone-beam computed tomography (CBCT). The authors manufactured 3 splint guides from a Digital Imaging and Communications in Medicine file and a stereolithography file obtained from a plaster model of the patient by using software for guided implant placement, for access opening, and for locating the root canals.
  
  
  CONCLUSIONS
  CBCT is an effective method for obtaining information about the root canal system in teeth with DI. In addition, guided implant surgery software is effective for manufacturing splint guides for endodontic treatment with conservative pulp chamber access.
  
  
  CONCLUSIONS
  Information obtained from CBCT allows the clinician to fabricate splint guides for minimally invasive access opening in this type of case, thus reducing the loss of dental tissue.
authors.forename: Álvaro
authors.initials: Á
authors.lastname: Zubizarreta Macho
authors.forename: Alberto
authors.initials: A
authors.lastname: Ferreiroa
authors.forename: Cristina
authors.initials: C
authors.lastname: Rico-Romano
authors.forename: Luis Óscar
authors.initials: LÓ
authors.lastname: Alonso-Ezpeleta
authors.forename: Jesús
authors.initials: J
authors.lastname: Mena-Álvarez
mesh_terms: D054893:Cone-Beam Computed Tomography / Q000379:methods; D005260:Female; D006801:Humans; D007180:Incisor / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011861:Radiography, Dental / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*; D014071:Tooth Abnormalities / Q000000981:diagnostic imaging* / Q000628:therapy; D014092:Tooth Root / Q000002:abnormalities* / Q000000981:diagnostic imaging; D055815:Young Adult
keywords: Dens invaginatus; computed tomography; computer-assisted therapy; dental pulp; endodontic therapy; root canal