title: Feasibility and Accuracy of Digitizing Edentulous Maxillectomy Defects: A Comparative Study.
abstract: OBJECTIVE
  The aim of this study was to evaluate the feasibility and accuracy of using an intraoral scanner to digitize edentulous maxillectomy defects.
  
  
  METHODS
  A total of 20 maxillectomy models with two defect types were digitized using cone beam computed tomography. Conventional and digital impressions were made using silicone impression material and a laboratory optical scanner as well as a chairside intraoral scanner. The 3D datasets were analyzed using 3D evaluation software.
  
  
  RESULTS
  Two-way analysis of variance revealed no interaction between defect types and impression methods, and the accuracy of the impression methods was significantly different (P = .0374).
  
  
  CONCLUSIONS
  Digitizing edentulous maxillectomy defect models using a chairside intraoral scanner appears to be feasible and accurate.
authors.forename: Mahmoud E
authors.initials: ME
authors.lastname: Elbashti
authors.forename: Mariko
authors.initials: M
authors.lastname: Hattori
authors.forename: Sebastian Bm
authors.initials: SB
authors.lastname: Patzelt
authors.forename: Dirk
authors.initials: D
authors.lastname: Schulze
authors.forename: Yuka I
authors.initials: YI
authors.lastname: Sumita
authors.forename: Hisashi
authors.initials: H
authors.lastname: Taniguchi
mesh_terms: D017076:Computer-Aided Design; D054893:Cone-Beam Computed Tomography; D003761:Dental Impression Technique; D005240:Feasibility Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D007575:Jaw, Edentulous / Q000000981:diagnostic imaging*; D008437:Maxilla / Q000000981:diagnostic imaging* / Q000601:surgery*; D003765:Models, Dental; D010158:Palatal Obturators; D012984:Software