title: Dentigerous cysts associated with impacted supernumerary teeth in the anterior maxilla.
abstract: Dentigerous cysts are thought to be caused by a developmental abnormality derived from the reduced enamel epithelium of the tooth forming organ. Most typical dentigerous cysts are those associated with the third molar teeth of the mandible, but rarely involve impacted supernumerary teeth in the anterior maxilla. Swelling and/or pain may be the major complaints of the patients. Herein, we review the literature spanning the past 22 years concerning dentigerous cysts associated with supernumerary teeth in the anterior maxilla, and present four additional cases with emphasis given to the clinicopathological characteristics of this type of dentigerous cyst.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Research Institute of Stomatology, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R.  China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Jiang
authors.forename: Guang-Zhou
authors.initials: GZ
authors.lastname: Xu
authors.forename: Chi
authors.initials: C
authors.lastname: Yang
authors.forename: Chuang-Qi
authors.initials: CQ
authors.lastname: Yu
authors.forename: Dong-Mei
authors.initials: DM
authors.lastname: He
authors.forename: Zhi-Yuan
authors.initials: ZY
authors.lastname: Zhang