title: Detection and imaging characteristics of the gubernacular tract in children on cone beam and multidetector computed tomography.
abstract: OBJECTIVE
  To elucidate the appearance and imaging characteristics of the gubernacular tract (GT) during the growth stage of children. Furthermore, this study evaluated the significance of the appearance of the GT.
  
  
  METHODS
  The visualizations of the GT were retrospectively analyzed by using panoramic radiographs and computed tomography (CT) in children.
  
  
  RESULTS
  In patients with normal eruption who had unerupted permanent teeth, except maxillary central supernumerary teeth, the GT was clearly visualized as a well-defined low-density tract on CT but not on panoramic radiographs. In patients with obstructive eruption, including impaction, the GT was deformed and not visible on CT.
  
  
  CONCLUSIONS
  This paper describes the frequency of detection and appearance of the GT in unerupted teeth. Preliminary data suggest that any alteration to the GT may be used to predict abnormal eruption of permanent teeth.
authors.affiliation: Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Ikuko
authors.initials: I
authors.lastname: Nishida
authors.affiliation: Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Oda
authors.affiliation: Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Tatsurou
authors.initials: T
authors.lastname: Tanaka
authors.affiliation: Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Kito
authors.affiliation: Division of Oral Histology and Neurobiology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Seta
authors.affiliation: Division of Oral Pathology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Naomi
authors.initials: N
authors.lastname: Yada
authors.affiliation: Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Yuko
authors.initials: Y
authors.lastname: Fujita
authors.affiliation: Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Katsura
authors.initials: K
authors.lastname: Saeki
authors.affiliation: Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Morikawa
authors.affiliation: Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Shinobu
authors.initials: S
authors.lastname: Matsumoto-Takeda
authors.affiliation: Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Nao
authors.initials: N
authors.lastname: Wakasugi-Sato
authors.affiliation: Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Manabu
authors.initials: M
authors.lastname: Habu
authors.affiliation: Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Kodama
authors.affiliation: Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Ikuya
authors.initials: I
authors.lastname: Miyamoto
authors.affiliation: Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Shinya
authors.initials: S
authors.lastname: Kokuryo
authors.affiliation: Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Shun
authors.initials: S
authors.lastname: Nishimura
authors.affiliation: Division of Oral Pathology, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Kou
authors.initials: K
authors.lastname: Matsuo
authors.affiliation: Division of Maxillofacial Surgery, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tominaga
authors.affiliation: Division of Oral Medicine, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Izumi
authors.initials: I
authors.lastname: Yoshioka
authors.affiliation: Division of Developmental Stomatognathic Function Science, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: Kenshi
authors.initials: K
authors.lastname: Maki
authors.affiliation: Division of Oral and Maxillofacial Radiology, Kyushu Dental University, Kitakyushu, Japan; Center for Oral Biological Research, Kyushu Dental University, Kitakyushu, Japan. Electronic address: Rad-mori@kyu-dent.ac.jp.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Morimoto
mesh_terms: D000539:Alveolar Process / Q000000981:diagnostic imaging*; D002648:Child; D002675:Child, Preschool; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D061330:Multidetector Computed Tomography; D011862:Radiography, Panoramic; D012189:Retrospective Studies; D014078:Tooth Eruption; D014083:Tooth Germ / Q000000981:diagnostic imaging*