title: Concrescence: assessment of case by periapical radiography, cone beam computed tomography and micro-computed tomography.
abstract: The aim of this article was to describe imaging aspects of concrescence analyzed by three imaging modalities. A second molar joined together with a third molar was imaged using digital periapical radiography, cone beam computed tomography (CBCT) and micro-computed tomography (Micro-CT). On periapical radiograph, the mesial root of the third molar is superimposed on the distal root of the second molar. On CBCT images, a large cementum union between bulbous roots was detected, confirming the diagnosis of concrescence. On micro-CT images, the cementum union appeared limited to the apical third of the roots. In conclusion, both computed tomography modalities allowed for the diagnosis of concrescence. However, only micro-CT provided the real extension of the cementum union.
authors.forename: Frederico Sampaio
authors.initials: FS
authors.lastname: Neves
authors.forename: Karla
authors.initials: K
authors.lastname: Rovaris
authors.forename: Matheus Lima
authors.initials: ML
authors.lastname: Oliveira
authors.forename: Pedro Duarte
authors.initials: PD
authors.lastname: Novaes
authors.forename: Deborah Queiroz
authors.initials: DQ
authors.lastname: de Freitas
mesh_terms: D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003739:Dental Cementum / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005671:Fused Teeth / Q000000981:diagnostic imaging*; D006801:Humans; D006936:Hypercementosis / Q000000981:diagnostic imaging; D008963:Molar / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008964:Molar, Third / Q000002:abnormalities* / Q000000981:diagnostic imaging; D016300:Radiography, Bitewing / Q000379:methods*; D019252:Radiography, Dental, Digital / Q000379:methods; D019227:Tooth Apex / Q000002:abnormalities / Q000000981:diagnostic imaging; D014092:Tooth Root / Q000002:abnormalities / Q000000981:diagnostic imaging; D055114:X-Ray Microtomography / Q000379:methods*