CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING
Rapid maxillary expansion is employed for the treatment of cross-bite and deficiency of transversal dimension of the maxilla in patients with and without cleft of palate and lip. For this procedure, generally, different orthodontic appliances and devices generating significant transversal forces are...
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| Format: | Article |
| Language: | English |
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University of Niš
2017-12-01
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| Series: | Facta Universitatis. Series: Mechanical Engineering |
| Online Access: | http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2311 |
| _version_ | 1828431482671071232 |
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| author | Sergei Bosiakov Anastasiya Vinokurova Andrei Dosta |
| author_facet | Sergei Bosiakov Anastasiya Vinokurova Andrei Dosta |
| author_sort | Sergei Bosiakov |
| collection | DOAJ |
| description | Rapid maxillary expansion is employed for the treatment of cross-bite and deficiency of transversal dimension of the maxilla in patients with and without cleft of palate and lip. For this procedure, generally, different orthodontic appliances and devices generating significant transversal forces are used. The aim of this study is the finite-element analysis of stresses and displacements of the skull without palate cleft and the skull with unilateral and bilateral cleft after activation of the Hyrax orthodontic device. Two different constructions of the orthodontic device Hyrax with different positions of the screw relative palate are considered. In the first case, the screw is in the occlusal horizontal plane, and in the other, the screw is located near the palate. Activation of the orthodontic device corresponds to the rotation of the screw on one-quarter turn. It is established that the screw position significantly affects the distributions of stresses in skull and displacements of the cranium without palate cleft and with unilateral or bilateral palate cleft. Stresses in the bone structures of the craniums without cleft and with cleft are transferred from the maxilla to the pterygoid plate and pharyngeal tubercle if the screw displaces from the occlusal plane to the palate. Depending on the construction of the orthodontic appliance, the maxilla halves in the transversal plane are unfolded or the whole skull is entirely rotated in the sagittal plane. The stresses patterns and displacements of the skull with bilateral palate cleft are almost unchanged after activation of the orthodontic devices with different positions of the screw, only magnitudes of stresses and displacements are changed. The obtained results can be used for design of orthodontic appliances with the Hyrax screw, as well as for planning of osteotomies during the surgical assistance of the rapid maxillary expansion. |
| first_indexed | 2024-12-10T18:03:52Z |
| format | Article |
| id | doaj.art-320caae62e2e4fa2b34d05f536b75911 |
| institution | Directory Open Access Journal |
| issn | 0354-2025 2335-0164 |
| language | English |
| last_indexed | 2024-12-10T18:03:52Z |
| publishDate | 2017-12-01 |
| publisher | University of Niš |
| record_format | Article |
| series | Facta Universitatis. Series: Mechanical Engineering |
| spelling | doaj.art-320caae62e2e4fa2b34d05f536b759112022-12-22T01:38:41ZengUniversity of NišFacta Universitatis. Series: Mechanical Engineering0354-20252335-01642017-12-0115351753310.22190/FUME161210012B1308CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLINGSergei Bosiakov0Anastasiya Vinokurova1Andrei Dosta2Belarusian State UniversityRzeszow Technology UniversityBelarusian Medical State UniversityRapid maxillary expansion is employed for the treatment of cross-bite and deficiency of transversal dimension of the maxilla in patients with and without cleft of palate and lip. For this procedure, generally, different orthodontic appliances and devices generating significant transversal forces are used. The aim of this study is the finite-element analysis of stresses and displacements of the skull without palate cleft and the skull with unilateral and bilateral cleft after activation of the Hyrax orthodontic device. Two different constructions of the orthodontic device Hyrax with different positions of the screw relative palate are considered. In the first case, the screw is in the occlusal horizontal plane, and in the other, the screw is located near the palate. Activation of the orthodontic device corresponds to the rotation of the screw on one-quarter turn. It is established that the screw position significantly affects the distributions of stresses in skull and displacements of the cranium without palate cleft and with unilateral or bilateral palate cleft. Stresses in the bone structures of the craniums without cleft and with cleft are transferred from the maxilla to the pterygoid plate and pharyngeal tubercle if the screw displaces from the occlusal plane to the palate. Depending on the construction of the orthodontic appliance, the maxilla halves in the transversal plane are unfolded or the whole skull is entirely rotated in the sagittal plane. The stresses patterns and displacements of the skull with bilateral palate cleft are almost unchanged after activation of the orthodontic devices with different positions of the screw, only magnitudes of stresses and displacements are changed. The obtained results can be used for design of orthodontic appliances with the Hyrax screw, as well as for planning of osteotomies during the surgical assistance of the rapid maxillary expansion.http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2311 |
| spellingShingle | Sergei Bosiakov Anastasiya Vinokurova Andrei Dosta CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING Facta Universitatis. Series: Mechanical Engineering |
| title | CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING |
| title_full | CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING |
| title_fullStr | CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING |
| title_full_unstemmed | CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING |
| title_short | CRANIOFACIAL STRESS PATTERNS AND DISPLACEMENTS AFTER ACTIVATION OF HYRAX DEVICE: FINITE ELEMENT MODELLING |
| title_sort | craniofacial stress patterns and displacements after activation of hyrax device finite element modelling |
| url | http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2311 |
| work_keys_str_mv | AT sergeibosiakov craniofacialstresspatternsanddisplacementsafteractivationofhyraxdevicefiniteelementmodelling AT anastasiyavinokurova craniofacialstresspatternsanddisplacementsafteractivationofhyraxdevicefiniteelementmodelling AT andreidosta craniofacialstresspatternsanddisplacementsafteractivationofhyraxdevicefiniteelementmodelling |