title: Integration accuracy of digital dental models and 3-dimensional computerized tomography images by sequential point- and surface-based markerless registration.
abstract: OBJECTIVE
  The goal of this study was to evaluate the accuracy of the integration of computerized tomography (CT)-based bone models and laser-scanned dental models by sequential point- and surface-based markerless registration to create a digital maxillofacial-dental model.
  
  
  METHODS
  The integration accuracy was evaluated in normal skulls (group I) and subjects with maxillofacial deformities (group II) by measuring the distance between the integrated models (for group I and II) and between the final integrated model and the laser-scanned original skull model (for group I).
  
  
  RESULTS
  The average error ranged between 0 and 0.2 mm without statistically significant difference in the region of maxilla or mandible and in tooth location.
  
  
  CONCLUSIONS
  We could confirm that the integration can be made with good accuracy without the aid of fiducial markers for the maxillofacial-dental composite model from the different resolution of CT and dental models.
authors.affiliation: Armed Forces Chuncheon Hospital, ROK Army, Yonsei University, Seoul, Korea.
authors.forename: Bong Chul
authors.initials: BC
authors.lastname: Kim
authors.forename: Chae Eun
authors.initials: CE
authors.lastname: Lee
authors.forename: Wonse
authors.initials: W
authors.lastname: Park
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Kang
authors.forename: Piao
authors.initials: P
authors.lastname: Zhengguo
authors.forename: Choong Kook
authors.initials: CK
authors.lastname: Yi
authors.forename: Sang-Hwy
authors.initials: SH
authors.lastname: Lee
mesh_terms: D002508:Cephalometry / Q000295:instrumentation* / Q000379:methods; D003198:Computer Simulation; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D019767:Maxillofacial Abnormalities / Q000000981:diagnostic imaging / Q000601:surgery*; D003765:Models, Dental; D056948:Orthognathic Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D010347:Patient Care Planning; D019252:Radiography, Dental, Digital / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult