Research article summary (published 29 Sep 2009):

Modified animal model and computer-assisted approach for dentoalveolar distraction osteogenesis to reconstruct unilateral maxillectomy defect.

Full Abstract

PURPOSE: The purpose of this report is to show the establishment of an animal model with a unilateral maxilla defect, application of virtual reality and rapid prototyping in the surgical planning for dentoalveolar distraction osteogenesis (DO). MATERIALS AND METHODS: Two adult dogs were used to develop an animal model with a unilateral maxillary defect. The 3-dimensional model of the canine craniofacial skeleton was reconstructed with computed tomography data using the software Mimics, version 12.0 (Materialise Group, Leuven, Belgium). A virtual individual distractor was designed and transferred onto the model with the defect, and the osteotomies and distraction processes were simulated. A precise casting technique and numeric control technology were applied to produce the titanium distraction device, which was installed on the physical model with the defect, which was generated using Selective Laser Sintering technology, and the in vitro simulation of osteotomies and DO was done. RESULTS: The 2 dogs survived the operation and were lively. The osteotomies and distraction process were simulated successfully whether on the virtual or the physical model. The bone transport could be distracted to the desired position both in the virtual environment and on the physical model. CONCLUSIONS: The novel method to develop an animal model with a unilateral maxillary defect was feasible, and the animal model was suitable to develop the reconstruction method for unilateral maxillary defect cases with dentoalveolar DO. Computer-assisted surgical planning and simulation improved the reliability of the maxillofacial surgery, especially for the complex cases. The novel idea to reconstruct the unilateral maxillary defect with dentoalveolar DO was proved through the model experiment.

Author information

Author/s: Feng, Zhihong (Z); Zhao, Jinlong (J); Zhou, Libin (L); Dong, Yan (Y); Zhao, Yimin (Y);

Affiliation: Department of Prosthodontics, Fourth Military Medical University School of Stomatology, Shaanxi, China.

Journal and publication information

Publication Type: Journal Article

Journal: Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons (J Oral Maxillofac Surg), published in United States. (Language: eng)

Reference: 2009-Oct; vol 67 (issue 10) : pp 2266-74

Dates: Created 2009/09/18; Completed 2009/10/29;

PMID: 19761922, status: MEDLINE (last retrieval date: 10/29/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Animals Computer Simulation Computer-Aided Design Disease Models, Animal Dogs Equipment Design Feasibility Studies Image Processing, Computer-Assisted Imaging, Three-Dimensional Maxilla - surgery

Maxillary Diseases - surgery Models, Anatomic Osteogenesis, Distraction - instrumentation; methods Osteotomy Patient Care Planning Surgery, Computer-Assisted - methods Titanium Tomography, X-Ray Computed Treatment Outcome User-Computer Interface

Associated Chemicals: Titanium (7440-32-6)

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