Accuracy of maxillary repositioning in two-jaw surgery with conventional articulator model surgery versus virtual model surgery

Tae Geon Kwon, J. W. Choi, H. M. Kyung, H. S. Park

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

The purpose of this study was to compare the accuracy of maxillary repositioning using the recently introduced computerized virtual model surgery (VMS) with conventional articulator model surgery (AMS). Forty-two patients who had undergone bimaxillary surgery were investigated retrospectively in this study. The patients were divided into two groups: conventional AMS (n = 23) and VMS (n = 19) for intermediate splint fabrication in maxillary positioning. Planned surgical movements and actual postsurgical changes of the lateral and frontal cephalometric measurements were compared. Although variations from the planned surgical movements were relatively small, both methods had statistically significant errors in some of the linear measurements. Both groups had a similar range of errors. The overall absolute mean discrepancy between the planned and actual surgical movements for the linear measurements was 1.17 mm (0-3.6 mm) in AMS and 0.95 mm (0-3.2 mm) in VMS. Of the total measurements, measurements reflecting a surgical discrepancy of more than 2 mm or 2° comprised 12.0% of the cases in AMS and 7.9% in VMS. The surgical accuracy of maxillary positioning with VMS was comparable to conventional AMS. Because VMS has the definitive advantage of eliminating the complex laboratory step and shortening the laboratory time, this can be accepted as an alternative to AMS.

Original languageEnglish
Pages (from-to)732-738
Number of pages7
JournalInternational Journal of Oral and Maxillofacial Surgery
Volume43
Issue number6
DOIs
StatePublished - Jun 2014

Keywords

  • accuracy
  • articulator model surgery
  • maxillary osteotomy
  • virtual model surgery

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