Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
Vol. 11, No. 2, 2012, pp. 141-147
Bioline Code: os12028
Full paper language: English
Document type: Research Article
Document available free of charge
Brazilian Journal of Oral Sciences, Vol. 11, No. 2, 2012, pp. 141-147
© Copyright 2012 Braz J Oral Sci.
Relationship between craniocervical posture, mandible and hyoid bone and influence on alimentary functions|
Weber, Priscila; Corrêa, Eliane Castilhos Rodrigues; Bolzan, Geovana de Paula; Ferreira, Fabiana dos Santos; Soares, Juliana Corrêa & da Silva, Ana Maria Toniolo
Aim: To evaluate the anatomical relationship between craniocervical posture and mandibular
and hyoid bone position and the influence on the masticatory and swallowing functions.
Thirty-six women aged 19 to 35 years without temporomandibular disorder diagnosis were
evaluated. Variables related to the craniocervical posture and mandibular and hyoid bone
position were obtained by cephalometric measurements. Masticatory and swallowing function
evaluations were performed according to a protocol of orofacial myofunctional evaluation with
Results: Significant correlations were observed between craniovertebral angle and the
linear distance from the hyoid bone to the mentum (p=0.02) and to the mandible (p=0.03). The
angle that measured the forward head position also demonstrated a significant correlation with the
linear distance between hyoid bone and jaw (p=0.00). The cervical curvature degree showed a
significant correlation with the linear distance from hyoid bone to the third cervical vertebra
(p=0.01). Modifications of the cranium base inclination in relation to the cervical column at the two
levels (NSL/CVT and NSL/OPT) were the only variables, which showed a significant correlation
with the mandible position. Important craniocervical postural changes were observed in the
subjects, although there was no association between them and a higher frequency of atypical
behaviors evaluated during masticatory and swallowing functions.
findings confirm the anatomical relationship between craniocervical posture, mandible and hyoid
bone. However, association between craniocervical posture alterations and masticatory and swallowing
function impairments was not detected. Such findings suggest that, in the presence of a musculoskeletal
imbalance, the body readapts itself ensuring that alimentary functions will not be affected.
posture, mastication, deglutition, cephalometry
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