title: [Radix occulta in antro - 3D-radiographic imaging of a radix relicta in the maxillary sinus].
abstract: Due to the anatomical proximity between the maxillary sinus and the teeth of the upper jaw, dislocation of tooth fragments or entire teeth into the sinus may occur during tooth extraction. Following the verification of such a foreign body within the sinus, its removal and the coverage of the oro-antral communication should be performed immediately for the prevention of possible sinus infection. In 2D-radiographic imaging, foreign bodies may not be located in the proper radiographic planes of an OPT or may be superimposed by other structures, complicating precise diagnosis. In such cases, 3D-imaging by CBCT is helpful. The present case report describes a female patient, being referred at our clinic for radiographic imaging and consecutive operative removal of a radix being dislocated into the right maxillary sinus. This radix relicta could be visualized by 3D-CBCT imaging. Consecutively, it was removed.
authors.affiliation: Klinik für Oralchirurgie, Klinik für Mund-, Kieferund Gesichtschirurgie, Zentrum für Zahnmedizin der Universität Zürich, UniversitätsSpital Zürich, Zürich, Switzerland.
authors.forename: Dominique
authors.initials: D
authors.lastname: Bichsel
authors.forename: Bernd
authors.initials: B
authors.lastname: Stadlinger
authors.forename: Georg
authors.initials: G
authors.lastname: Damerau
keywords: Sinus; DVT vs. OPT; Wurzelrest; Endoskop; Ostium naturale