title: Quantitative research using computed tomographic scanning of beagle jaws for determination of safe zones for micro-screw implantation.
abstract: OBJECTIVE
  The aim of this study was to provide an anatomical map for micro-screw placement in a safe location between the posterior dental roots of the beagle jaw.
  
  
  METHODS
  Three dimensional (3D) reconstructed images of 12 adult male beagles and jaw ground sections of another 6 beagles were examined. We measured sagittal, vertical and horizontal parameters in the intraradicular and interradicular regions of posterior teeth.
  
  
  RESULTS
  The data showed that the safe zones were located in the intraradicular spaces of P2, P3, P4, M1, M2 and the interradicular spaces between P4 and M1, M1 and M2 in the mandible; in the maxilla, they were located in the intraradicular spaces of P3, P2, M1 and the interradicular space between P3 and M1.
  
  
  CONCLUSIONS
  The present study provides a map of safe areas for the application of micro-screws in beagles.
authors.affiliation: State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, 14# Section 3 Renminnan Road, Chengdu, PR China.
authors.forename: Lixing
authors.initials: L
authors.lastname: Zhao
authors.forename: Zhenrui
authors.initials: Z
authors.lastname: Xu
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yang
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Xing
authors.initials: X
authors.lastname: Wei
authors.forename: Tian
authors.initials: T
authors.lastname: Tang
authors.forename: Zhihe
authors.initials: Z
authors.lastname: Zhao
mesh_terms: D000818:Animals; D001863:Bone Screws; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D004285:Dogs / Q000033:anatomy & histology*; D005260:Female; D007091:Image Processing, Computer-Assisted; D007568:Jaw / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008297:Male; D008334:Mandible / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D008437:Maxilla / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D012886:Skull / Q000033:anatomy & histology; D014057:Tomography, X-Ray Computed
chemical_list: D015921:Dental Implants