title: [Establishment of artificial-tooth three-dimensional coordinates based on dental anatomic concepts].
abstract: OBJECTIVE
  To establish a three-dimensional (3-D) descartes coordinates of artificial teeth based on concepts of dental anatomy and to obtain their geometric parameters.
  
  
  METHODS
  Using the 3-D reverse engineering software, artificial-tooth coordinates were defined based on their anatomic concepts which included long axis, mesiodistal and buccolingual directions, and occlusal plane. Some geometric parameters, such as mesiodistal and buccolingual dimensions, height and obliquity of dental cusp, were measured.
  
  
  RESULTS
  The 3-D coordinates of 28 artificial teeth were established and geometric parameters in coordinates were obtained.
  
  
  CONCLUSIONS
  The definition of artificial-tooth coordinates can be made using mathematic language based on dental anatomic concepts, which is the basal work of complete denture computer-aided design (CAD).
authors.affiliation: Research Center of Engineering and Technology for Dental Computing, Ministry of Health, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Ming-li
authors.initials: ML
authors.lastname: Liu
authors.forename: Ping
authors.initials: P
authors.lastname: Huo
authors.forename: Pei-jun
authors.initials: PJ
authors.lastname: Lü
mesh_terms: D017076:Computer-Aided Design; D003779:Denture Design / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional; D003765:Models, Dental; D014070:Tooth / Q000033:anatomy & histology; D014093:Tooth, Artificial