Diagnosis and endodontic treatment of type 11 dens invaginatus by using cone-beam computed tomography and splint guides for cavity access

Abstract

Background and Overview. 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 treat-ment of a type II DI by means of guided splints for cavity access. Case Description. 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 au-thors manufactured 3 splint guides from a Digital Imaging and Communications in Medicine file and a stereolithography file ob-tained 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 infor-mation 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. Practica! lmplications. Information obtained from CBCT al-lows the clinician to fabricate splint guides for minimally invasive access opening in this type of case, thus reducing the loss of dental tissue.