title: Clinical experiences of digital model surgery and the rapid-prototyped wafer for maxillary orthognathic surgery.
abstract: OBJECTIVE
  The aim of this study was to present our clinical experience regarding the production and accuracy of digitally printed wafers for maxillary movement during the bimaxillary orthognathic surgery.
  
  
  METHODS
  Fifty-five consecutive patients requiring maxillary orthognathic surgery were included in this study. The plan for digital model surgery (DMS) was dictated by the surgical plans for each clinical case. We carried out digital model mounting, DMS, wafer printing, and confirmation of the accuracy of the procedure.
  
  
  RESULTS
  Moving the reference points to the target position in DMS involved a mean error of 0.00-0.09 mm. The mean errors confirmed by the model remounting procedure with the printed wafer by DMS were 0.18-0.40 mm (for successful cases; n = 42) and 0.03-1.04 mm (for poor cases; n = 3).
  
  
  CONCLUSIONS
  The accuracies of the wafers by DMS were similar to those for wafers produced by manual model surgery, although they were less accurate than those produced by DMS alone. The rapid-prototyped interocclusal wafer produced with the aid of DMS can be an alternative procedure for maxillary orthognathic surgery.
authors.affiliation: Division of Oral and Maxillofacial Surgery, Armed Forces Chuncheon Hospital, 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: Moon-Key
authors.initials: MK
authors.lastname: Kim
authors.forename: Piao
authors.initials: P
authors.lastname: Zhengguo
authors.forename: Hyung-Seog
authors.initials: HS
authors.lastname: Yu
authors.forename: Choong Kook
authors.initials: CK
authors.lastname: Yi
authors.forename: Sang-Hwy
authors.initials: SH
authors.lastname: Lee
mesh_terms: D002508:Cephalometry / Q000379:methods; D017076:Computer-Aided Design; D019465:Craniofacial Abnormalities / Q000601:surgery; D003725:Dental Articulators; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D007574:Jaw Relation Record / Q000295:instrumentation*; D008310:Malocclusion / Q000601:surgery; D008437:Maxilla / Q000002:abnormalities / Q000601:surgery*; D008953:Models, Anatomic; D003765:Models, Dental; D056948:Orthognathic Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D010347:Patient Care Planning; D014057:Tomography, X-Ray Computed / Q000379:methods; D014584:User-Computer Interface