Changes in head posture and hyoid bone position in Turkish Class III patients after mandibular setback surgery

Marşan, Gülnaz; Öztaş, Evren; Cura, Nil; Kuvat, Samet Vasfi; Emekli, Ufuk

doi:10.1016/j.jcms.2009.03.009

Cited by 37 publications

(29 citation statements)

References 32 publications

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“…8 The hyoid bone has been reported to move inferoposteriorly after mandibular setback surgery, and this movement may be caused by the surrounding muscles compensating for the reduction in the oral volume and adapting physiologically to the soft tissue changes after the surgery.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional changes of the hyoid bone and airway volumes related to its relationship with horizontal anatomic planes after bimaxillary surgery in skeletal Class III patients

Kim

Choi

et al. 2013

The Angle Orthodontist

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Objective: To evaluate longitudinal changes of the hyoid bone position and pharyngeal airway space after bimaxillary surgery in mandibular prognathism patients. Materials and Methods: Cone-beam computed tomography scans were taken for 25 mandibular prognathism patients before surgery (T0), 2 months after surgery (T1), and 6 months after surgery (T2). The positional displacement of the hyoid bone was assessed using the coordinates at T0, T1, and T2. Additionally, the volume of each subject's pharyngeal airway was measured. Results: The mean amount of posterior maxilla impaction was 3.76 ± 1.33 mm as the palatal plane rotated 2.04° ± 2.28° in a clockwise direction as a result of bimaxillary surgery. The hyoid bone moved backward (P < .05, P < .001) and downward (P > .05, P < .05) at 2 months and 6 months after surgery, while the total volume of the pharyngeal airway significantly decreased at the same time points (P < .001, P < .001). There was significant relationship between the changes of the hyoid bone position and airway volume at 2 months after surgery (P < .05). The change of the palatal plane angle was positively correlated to the decrease in the total airway volume (P < .001). Conclusions: The null hypothesis was rejected. The hyoid bone moved inferoposteriorly, and the pharyngeal airway volume decreased for up to 6 months after bimaxillary surgery. The decrease in the pharyngeal airway volume was correlated to the changes in the palatal plane inclination and the positional change of the hyoid bone.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional changes of the hyoid bone and airway volumes related to its relationship with horizontal anatomic planes after bimaxillary surgery in skeletal Class III patients

Kim

Choi

et al. 2013

The Angle Orthodontist

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“…In the course of the phylogeny, with verticalization of the body, humans have seen a decline in facial prognathism and cervical tilt, and a forward pelvis shift. That is the exact opposite of what we observe when surgery results in increased facial prognathism (maxillary advancement in Class III 1,31 and especially mandibular advancement in classes II): there is an increase in the anterior cervical tilt and pelvic retroversion 25,36 perhaps in compensation to the more anterior positioning of the cephalic pole and perhaps involved in the maintenance of visual and labyrinthine postural sensors in their initial orientation 34 . The orthodontist's field of investigation is increasingly expanding, both in terms of diagnosis and therapy, and must include the patient's postural balance.…”

Section: Pelvi-lumbo-cranial Relationsmentioning

confidence: 69%

Bipedalism, pelvic–spinal balance and cranial facial development

Bazert

Vidal²,

Okeily³

2015

J Dentofacial Anom Orthod

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SUMMARYEvolution into human bipedalism required major anatomical changes: the human body gradually specialized from head to foot to standing upright, bipedal walking, and bipedal running. The inherent constraints in this type of locomotion (compression and parasagittal movements) have contributed to decreased balance, requiring skeletal modifications but also an improvement of the nervous system for energy-saving purposes. The influence of the Earth's gravity was essential, and the axial skeleton has transformed in response to gravity constraints 5 . With the exception of human beings, no primate has signs of specialization to bipedalism. The comparison with other primates, and more specifically the great apes, highlights the morphological differences in each skeletal stage. These differences, which are related to each other, offer to bipedal humans a position of stability, balance, and energy conservation.

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“…A resposta desses tecidos após o procedimento cirúrgico é importante porque tem alta correlação com a manutenção, aumento ou diminuição da VAS. A posição da cabeça camufla por vezes as mudanças morfológicas na via aérea, não ficando claro se o reposicionamento do osso hióide tem um efeito direto sobre a nova dimensão da VAS 17,39,40 . Há três casos descritos na literatura de pacientes que desenvolveram SAHOS após a cirurgia de recuo mandibular.…”

Section: Revisão Da Literaturaunclassified

Avaliação da via aérea superior em pacientes Classe III submetidos à cirurgia ortognática – Revisão de Literatura

Castro-Silva

Pereira-Filho

Moraes³

et al. 2014

cmbio

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Resumo Introdução:A configuração e as dimensões da via aérea superior são determinadas pelas estruturas anatômicas como: tecidos moles, musculatura e esqueleto craniofacial, que compõem ou circundam a faringe. As alterações anatômicas dos tecidos moles e/ou do esqueleto craniofacial poderão tornar a via aérea superior (VAS) mais estreita. A cirurgia ortognática, que é utilizada na correção das deformidades dento-esqueléticas, leva também a alterações na VAS. Objetivo: Em vista dos fatos apresentados, o presente artigo tem como objetivo realizar uma revisão da literatura sobre as alterações da via aérea superior em pacientes classe III submetidos à cirurgia ortognática. Metodologia: Foram selecionados artigos originais e de revisão publicados entre 1990 e 2010, em duas bases de dados bibliográficos -Literatura Internacional em Ciências da Saúde (Pubmed) e Porta de Periódicos CAPES. Resultados: Foram selecionados trinta e nove (39) artigos para a escrita dessa revisão. Conclusão: A via aérea superior e a deformidade dento-esquelética classe III devem ser avaliadas cuidadosamente antes da cirurgia ortognática e sempre que o planejamento cirúrgico permitir deve-se preferir os avanços maxilares aos recuos mandibulares. Palavras INTRODUÇÃOO tratamento ortodôntico-cirúrgico é cada vez mais utilizado no tratamento de pacientes portadores de deformidade dento-esquelética. Quando essa modalidade de tratamento é adotada, a estética e função devem ser cuidadosamente avaliadas. A deformidade dento--esquelética classe III é resultado de um prognatismo mandibular e/ou uma deficiência maxilar. Historicamente, a correção cirúrgica dessa deformidade dava-se apenas pela cirurgia de recuo mandibular. Sabe-se que o excesso ântero-posterior da mandíbula isoladamente ocorre somente em 20-25% dos casos. Atualmente as cirurgias bimaxilares ou de avanço maxilar isolado têm sido utilizadas com mais frequência para o tratamento de pacientes com deformidades classe III. Na última década as cirurgias de recuo mandibular têm diminuído e passaram a representar somente 10% dos procedimentos, enquanto que as cirurgias bimaxilares e de avanço maxilar são realizadas no restante dos pacientes 1,2,3,4 . O tratamento das deformidades dento-esquelé-ticas com osteotomias nos maxilares tem um efeito na ARTIGO DE REVISÃO

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Changes in head posture and hyoid bone position in Turkish Class III patients after mandibular setback surgery

Cited by 37 publications

References 32 publications

Three-dimensional changes of the hyoid bone and airway volumes related to its relationship with horizontal anatomic planes after bimaxillary surgery in skeletal Class III patients

Three-dimensional changes of the hyoid bone and airway volumes related to its relationship with horizontal anatomic planes after bimaxillary surgery in skeletal Class III patients

Bipedalism, pelvic–spinal balance and cranial facial development

Avaliação da via aérea superior em pacientes Classe III submetidos à cirurgia ortognática – Revisão de Literatura

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