title: Frequency and distribution of early tooth loss and endodontic treatment needs of permanent first molars in a Turkish pediatric population.
abstract: OBJECTIVE
  The objective of this study is to evaluate the frequency and distribution of early tooth loss and endodontic treatment needs of permanent first molars in a Turkish pediatric population.
  
  
  METHODS
  A total of 7,895 panoramic radiographs taken for routine dental examination at the Department of Oral Maxillofacial Radiology between 2008 and 2012 years were investigated. Two independent specialists evaluated early tooth loss and endodontic treatment needs of permanent first molars using panoramic radiography and patient anamnesis forms. The teeth were classified according to the following data: (a) Missing teeth, (b) teeth requiring extraction, (c) endodontically treated teeth (ETT), (d) teeth requiring endodontic therapy. The data also classified according to four factors: Age group (6-12 and 13-16), gender (boy and girl), jaw (mandible and maxilla) and side (right and left). A Chi-square test was used for statistical analyses.
  
  
  RESULTS
  A total of 19,488 and 12,092 teeth were evaluated in the child group and adolescent group respectively. All data were higher in adolescents than children (P < 0.001). For gender factor, only ETT was higher in girls than it was in boys (P < 0.001). For the jaw factor, all data were higher (P < 0.001) in mandible than in the maxilla. For the side factor, no statistical difference existed between right and left.
  
  
  CONCLUSIONS
  Early tooth loss and endodontic treatment needs of permanent first molars showed variability according to age groups and jaws. When the results were compared according to the side and gender factors, no statistical difference was found (P > 0.05) except with the data of ETT in gender groups.
authors: Department of Restorative Dentistry, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Sezer
authors: S
authors: Demirbuga
authors: Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Oznur
authors: O
authors: Tuncay
authors: Department of Pediatric Dentistry, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Kenan
authors: K
authors: Cantekin
authors: Department of Restorative Dentistry, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Muhammed
authors: M
authors: Cayabatmaz
authors: Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Asiye Nur
authors: AN
authors: Dincer
authors: Department of Prosthetic Dentistry, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Halil İbrahim
authors: Hİ
authors: Kilinc
authors: Department of Oral Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye.
authors: Ahmet Ercan
authors: AE
authors: Sekerci
keywords: Age; endodontic; gender; tooth loss