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4_2014_sen_12

Title of the article The deformations of the craniofacial complex of cross-bite
Authors

Bosiakov S.M., PhD in Physical and Mathematical Sciences, Associate Professor of the Department of Theoretical and Applied Mechanics of the Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

Vinokurova A.V., Graduate Student of the Mechanical Faculty of the Technology University, Rzheshuv, Poland (Rzeszow University of Technology)

Dosta A.N., PhD in Medical Sciencies, Associate Professor of the Department of Orthopedic Dentistry of the Belarusian State Medical University, Minsk, Republic of Belarus
In the section BIOMECHANICS
Year 2014 Issue 4 Pages 87-94
Type of article RAR Index UDK 539.3+612.311 Index BBK  
Abstract The finite element modeling of the stress-strain state of a human skull during maxillary expansion using different designs of the orthodontic device HYRAX is carried out. The finite-element models of the craniofacial complex and supporting teeth are obtained on the basis of the tomographic data. Orthodontic appliance designs differ in the locations of the screw relative to the palate. The design with the location of the device rods and the screw in the same horizontal plane as well as the design with the location of the screw on 8 mm closer to the palate relative to the horizontal position are considered. Activation of the screw is carried out on a half turn. The displacements vector fields of a intact skull, a skull with a palate cleft, and the supporting teeth are obtained. Regions of the largest displacements of the skull bone structures are defined for different designs. Influence of the orthodontic appliance design on displacements of the supporting teeth is analyzed. The results can be used for the design of devices HYRAX for the treatment of cross-bite with taking into account the patient individual features.
Keywords rapid maxillary expansion, craniofacial complex, crossbite, palate cleft, finite element modeling, orthdontic appliance HYRAX
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