title: A retrospective study of pediatric traumatic dental injuries in Xi'an, China.
abstract: OBJECTIVE
  Pediatric traumatic dental injury is an important public health problem because of its high prevalence, severe physical or psychological impacts, and high prevention and treatment costs. This study aimed to determine the distributive features of pediatric traumatic dental injury in a university dental hospital in Xi'an, China.
  
  
  METHODS
  Children (aged 1 to 15 years) visiting the hospital from February 2011 to May 2012 as a result of dental trauma were investigated. Trauma-related information was recorded and analyzed.
  
  
  RESULTS
  Most of the traumas occurred in children aged 7 to 12 years and affected the maxillary incisors. Of all the children involved, 17.2% had overjet. Concussion, enamel-dentin-pulp fracture, avulsion, and lateral luxation occurred more in the primary dentition (20.9%, 16.5%, 14.3%, and 13.2%, respectively). However, most traumas to the permanent dentition were enamel-dentin-pulp fractures and enamel-dentin fractures (33.7% and 29.1%, respectively). Most traumas were luxations (n = 156) in the 1- to 6-year-old group, while fractures were more common in the 7- to 12- and >13-year-old groups (n = 549, 84; P < 0.001). In total, 357 urban children had access to immediate medical care, whereas only 12 rural children were able to access a clinic within 24 h after injury (P < 0.001).
  
  
  CONCLUSIONS
  Based on the information presented in this survey, the government should focus on medical development in rural settings and should attempt to balance the distribution of medical resources between urban and rural areas. Educational and preventive programs should also be promoted to enhance the guardians' awareness regarding pediatric traumatic dental injuries.
authors.affiliation: Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhu
authors.forename: Wenqiang
authors.initials: W
authors.lastname: Su
authors.forename: Zhifei
authors.initials: Z
authors.lastname: Zhou
authors.forename: Yan
authors.initials: Y
authors.lastname: Jin
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Wang
mesh_terms: D002648:Child; D002681:China / Q000453:epidemiology; D006801:Humans; D012189:Retrospective Studies; D018677:Tooth Injuries / Q000453:epidemiology*
keywords: children; pediatric dentistry; primary and permanent teeth; traumatic dental injuries