title: A dentigerous cyst associated with bilaterally impacted mandibular canines in a girl: a case report.
abstract: BACKGROUND
  A dentigerous cyst is the most common developmental odontogenic cyst and is frequently noted as an incidental finding on radiographs. The most common teeth affected are impacted mandibular third molars and permanent maxillary canines. This case involves a dentigerous cyst encompassing the right and left impacted mandibular canines and crossing the midline. This is, to the best of our knowledge, the first reported case of a dentigerous cyst encompassing non-adjacent teeth and crossing the midline.
  
  
  METHODS
  The patient presented to our orthodontic clinic for treatment of malocclusion. The patient was a 10-year, one-month-old Caucasian girl with a dentigerous cyst encompassing the right and left impacted mandibular canines and crossing the midline.
  
  
  CONCLUSIONS
  This case involves an unusual clinical and radiographic presentation of a dentigerous cyst. It shows a new variant of presentation that medical professionals, specifically dentists and radiologists, should be aware of, since a dentigerous cyst crossing the midline has not been previously reported as far as we are aware. This additional knowledge is important for inclusion on differential diagnosis lists and aids in the development of a proper treatment plan.
authors.affiliation: Department of Oral Biology, Section of Oral and Maxillofacial Pathology and Radiology, University of Nebraska Medical Center College of Dentistry, 40th and Holdrege Streets, Box 830740, Lincoln, NE 68583-0740, USA. smgonzalez@unmc.edu.
authors.forename: Shawneen M
authors.initials: SM
authors.lastname: Gonzalez
authors.forename: Peter M
authors.initials: PM
authors.lastname: Spalding
authors.forename: Jeffrey B
authors.initials: JB
authors.lastname: Payne
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Giannini