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. 2012;130(4):236-41.
doi: 10.1590/s1516-31802012000400006.

Cephalometric evaluation of the airway space and hyoid bone in children with normal and atypical deglutition: correlation study

Almiro José Machado Jr  1 , Agrício Nubiato Crespo
Affiliations

Cephalometric evaluation of the airway space and hyoid bone in children with normal and atypical deglutition: correlation study

Almiro José Machado Jr et al. Sao Paulo Med J. 2012.

Abstract
in English, Portuguese

Context and objective: Although there is a close relationship between swallowing and breathing, there are no studies evaluating the radiographic anatomy of the airway and its possible correlation with the radiographic position of the hyoid bone. The aim of this study was to evaluate the possible correlation of the radiographic position of the hyoid bone and airway space (PAS) in lateral radiographs on children with atypical deglutition, in comparison with those with normal swallowing.

Design and setting: Cross-sectional analytical study with control group in a public university.

Methods: Using cephalometric analysis on lateral teleradiographs, the distance from the hyoid bone to the mandibular plane (MP-H) and the distance from the hyoid bone to the tuber (T-H) were correlated with the PAS measurement (airway) in two groups: 55 teleradiographs in the experimental group (with atypical deglutition) and 55 teleradiographs in the control group (normal deglutition). Both groups included subjects at the mixed dentition stage.

Results: The variable T-H presented a statistically significant correlation with PAS (0.0286) and the variable MP-H had a significant correlation with the variable PAS (0.0053). This positive correlation was significant only in the control group and not in the group with atypical swallowing.

Conclusions: There was a positive correlation between the MP-H and PAS measurements and between the T-H and PAS measurements only in the group with normal swallowing. These correlations were not observed in the group with atypical swallowing.

CONTEXTO E OBJETIVO:: Embora haja estreita relação entre respiração e deglutição, não existem estudos que avaliem a anatomia radiográfica de via aérea e sua possível correlação com a posição radiográfica do osso hioide. O objetivo deste estudo foi avaliar possível correlação da posição radiográfica do osso hioide e do espaço aéreo na radiografia lateral de crianças com deglutição atípica quando comparada com aquelas com deglutição normal.

TIPO DE ESTUDO E LOCAL:: Estudo transversal analítico com grupo controle em universidade pública.

MÉTODOS:: Por meio de análise cefalométrica em telerradiografias laterais, foi correlacionada a distância do osso hioide ao plano mandibular (MP-H) e do túber ao osso hioide (T-H) com a medida do espaço da via aérea (PAS) em dois grupos: 55 telerradiografias do grupo experimental (com deglutição atípica) e 55 telerradiografias do grupo controle (deglutição normal). Ambos os grupos incluíram indivíduos em fase de dentição mista.

RESULTADOS:: A variável T-H apresentou correlação estatisticamente significativa com PAS (0,0286) e a variável MP-H teve correlação significativa com a variável PAS (0,0053). Esta correlação positiva foi significativa apenas no grupo controle e não no grupo de deglutição atípica.

CONCLUSÕES:: Há correlação positiva entre as medidas MP-H e PAS e entre as medidas T-H e PAS somente no grupo de deglutição normal. Estas correlações não foram observadas no grupo de deglutição atípica.

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Conflict of interest statement

Conflict of interest: None

Figures

Figure 1.
Figure 1.. Cephalometric measurements: TH = tuber and MP-H = madibular plane.
See this image and copyright information in PMC

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