title: Concrescence of teeth: cemental union between the crown of an impacted tooth and the roots of an erupted tooth.
abstract: Concrescence of teeth is a condition showing a union of adjacent teeth by only cementum. In all the previously reported cases, the union has been observed between the roots of the affected teeth. Here, we describe the first case that showed a concrescence of the crown of an impacted tooth and the roots of the erupted tooth. In addition, we discuss how this condition, especially the deposition of acellular cementum on the crown, occurred.
authors.affiliation: Department of Oral Health Research, School of Oral Health Science, Hiroshima University, Hiroshima, Japan. masaru@hiroshima-u.ac.jp
authors.forename: Masaru
authors.initials: M
authors.lastname: Sugiyama
authors.forename: Ikuko
authors.initials: I
authors.lastname: Ogawa
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Suei
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Tohmori
authors.forename: Koichiro
authors.initials: K
authors.lastname: Higashikawa
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Kamata
mesh_terms: D005260:Female; D006801:Humans; D006936:Hypercementosis / Q000175:diagnosis*; D008875:Middle Aged; D008963:Molar / Q000473:pathology*; D008964:Molar, Third / Q000473:pathology*; D011862:Radiography, Panoramic; D012391:Root Resorption / Q000175:diagnosis; D020254:Tooth Ankylosis / Q000175:diagnosis; D019228:Tooth Crown / Q000473:pathology*; D014092:Tooth Root / Q000473:pathology*; D014095:Tooth, Impacted / Q000175:diagnosis*