Vet Comp Orthop Traumatol 2014; 27(01): 27-35
DOI: 10.3415/VCOT-12-06-0069
Original Research
Schattauer GmbH

Intra-oral mandibular sagittal osteotomy technique to correct mandibular distocclusion and mesio-occlusion

Study in canine cadavers
V. G. G. Carvalho
1   Brazilian Veterinary Dental Association, São Paulo, Brazil
,
M. A. Gioso
1   Brazilian Veterinary Dental Association, São Paulo, Brazil
2   Department of Surgery, Comparative Dental Laboratory, School of Veterinary Medicine, University of São Paulo (USP), São Paulo, Brazil
,
P. E. G. Carvalho
3   Department of Orthodontics, School of Dentistry, University of São Paulo City (UNICID), São Paulo, Brazil
,
F. P. Cunha
2   Department of Surgery, Comparative Dental Laboratory, School of Veterinary Medicine, University of São Paulo (USP), São Paulo, Brazil
,
L. A. V. Martinez
2   Department of Surgery, Comparative Dental Laboratory, School of Veterinary Medicine, University of São Paulo (USP), São Paulo, Brazil
,
L. S. Lemos
3   Department of Orthodontics, School of Dentistry, University of São Paulo City (UNICID), São Paulo, Brazil
› Author Affiliations
Further Information

Publication History

Received 01 June 2012

Accepted 19 August 2013

Publication Date:
19 December 2017 (online)

Summary

Skeletal malocclusions may be due to disturbances in the growth of the mandible or maxilla. In most cases, discomfort is the result of tooth-to-tooth malocclusion or tooth-to-softtissue contact. Currently, in veterinary medicine, these problems are treated palliatively. In humans, orthognathic surgery is indicated to correct severe skeletal malocclusions, offering aesthetic and functional benefits to the patients. This research evaluated the effects of an intra-oral mandibular sagittal split osteotomy in 20 dog cadavers with skeletal malocclusion. After sagittal osteotomy and mandibular repositioning, the osteotomies were fixed with titanium mini-plates and 1.5 mm diameter screws or 1.5 mm bicortical screws. The statistical analysis revealed a significant occlusion difference in the treated cadavers (Wilcoxon test, p <0.05). In 19/20 cadavers there was correction of the angular osteotomy while the mandibular alveolar vessels and nerve were preserved during osteotomy and fixation in all cadavers. In conclusion, intra-oral mandible sagittal osteotomy allowed correction of malocclusion in cadavers. However, it would be important to prepare a preoperative orthodontic-surgical treatment plan to obtain a satisfactory occlusion during the surgery in clinical patients.

 
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