title: Cone-beam computed tomography findings of impacted upper canines.
abstract: OBJECTIVE
  To describe the features of impacted upper canines and their relationship with adjacent structures through three-dimensional cone-beam computed tomography (CBCT) images.
  
  
  METHODS
  Using the CBCT scans of 79 upper impacted canines, we evaluated the following parameters: gender, unilateral/bilateral occurrence, location, presence and degree of root resorption of adjacent teeth (mild, moderate, or severe), root dilaceration, dental follicle width, and presence of other associated local conditions.
  
  
  RESULTS
  Most of the impacted canines were observed in females (56 cases), unilaterally (51 cases), and at a palatine location (53 cases). Root resorption in adjacent teeth and root dilaceration were observed in 55 and 47 impacted canines, respectively. In most of the cases, the width of the dental follicle of the canine was normal; it was abnormally wide in 20 cases. A statistically significant association was observed for all variables, except for root dilaceration (p=0.115) and the side of impaction (p=0.260).
  
  
  CONCLUSIONS
  Root resorption of adjacent teeth was present in most cases of canine impaction, mostly affecting adjacent lateral incisors to a mild degree. A wide dental follicle of impacted canines was not associated with a higher incidence of external root resorption of adjacent teeth.
authors.affiliation: Department of Endodontics, Araçatuba Dental School, Paulista State University, Araçatuba, SP, Brazil.
authors.forename: Ludmilla Mota
authors.initials: LM
authors.lastname: da Silva Santos
authors.affiliation: Department of Oral Radiology, School of Dentistry, Federal University of Bahia, Salvador, BA, Brazil.
authors.forename: Luana Costa
authors.initials: LC
authors.lastname: Bastos
authors.affiliation: Department of Stomatology, Oral Public Health, and Forensic Dentistry, School of Dentistry, University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Christiano
authors.initials: C
authors.lastname: Oliveira-Santos
authors.affiliation: Department of Endodontics, School of Dentistry, Federal University of Bahia, Salvador, BA, Brazil.
authors.forename: Silvio José Albergaria
authors.initials: SJ
authors.lastname: da Silva
authors.affiliation: Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil.
authors.forename: Frederico Sampaio
authors.initials: FS
authors.lastname: Neves
authors.affiliation: Department of Oral Radiology, School of Dentistry, Federal University of Bahia, Salvador, BA, Brazil.
authors.forename: Paulo Sérgio Flores
authors.initials: PS
authors.lastname: Campos
keywords: Cone-Beam Computed Tomography; Cuspid; Root Resorption; Tooth, Impacted