ONeil, M. and Khambay, B. and Moos, K. F. and Barbenel, J. and Walker, F. and Ayoub, A. (2012) Validation of a new method for building a three-dimensional physical model of the skull and dentition. British Journal of Oral and Maxillofacial Surgery, 50 (1). pp. 49-54. ISSN 0266-4356Full text not available in this repository. (Request a copy from the Strathclyde author)
We present a new method for replicating the skull and occlusal surface with an accurate physical model that could be used for planning orthognathic surgery. The investigation was made on 6 human skulls, and a polyvinyl splint was fabricated on the dental cast of the maxillary dentition in each case. A cone beam computed tomogram (CBCT) was taken of each skull and a three-dimensional replica produced. The distorted dentition (as a result of magnification errors and streak artefacts) was removed from the three-dimensional model and replaced by new plaster dentition that was fabricated using the polyvinyl splint and a transfer jig replication technique. To verify the accuracy of the method the human skulls and the three dimensional replica model, with the new plaster dentition in situ, were scanned using a laser scanner. The three-dimensional images produced were superimposed to identify the errors associated with the replacement of the distorted occlusal surface with the new plaster dentition. The overall mean error was 0.72 and SD was (0.26) mm. The accuracy of the method encouraged us to use it clinically in a case of pronounced facial asymmetry.
|Keywords:||prediction planning, prediction, face-bow transfer, planning orthognathic surgery, 3D, orthoganic surgery, model surgery, articulator, validation, new method , building, three-dimensional physical model , skull , dentition, Physics, Oral Surgery, Otorhinolaryngology, Surgery|
|Subjects:||Science > Physics|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||29 Jun 2012 15:41|
|Last modified:||07 Jan 2017 01:14|