Entity

Time filter

Source Type

Chuncheon, South Korea

Kim B.C.,Armed Forces Chuncheon Hospital | Lee C.E.,Yonsei University | Park W.,Yonsei University | Kim M.-K.,National Health Insurance Corporation Ilsan Hospital | And 4 more authors.
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology | Year: 2011

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. Study design: 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). Conclusion: 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. © 2011 Mosby, Inc. Source


Kim B.C.,Armed Forces Chuncheon Hospital | Lee C.E.,Yonsei University | Park W.,Yonsei University | Kang S.H.,National Health Insurance Corporation | And 3 more authors.
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology | Year: 2010

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. Study design. 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. © 2010 Mosby, Inc. All rights reserved. Source

Discover hidden collaborations