Pharyngeal airway in children with prognathism and normal occlusion.
Angle Orthod
; 81(1): 75-80, 2011 Jan.
Article
em En
| MEDLINE
| ID: mdl-20936957
ABSTRACT
OBJECTIVE:
To test the hypothesis that there is no difference in the pharyngeal airway width and the position of the maxillofacial skeleton between prognathic and normal children. MATERIALS ANDMETHODS:
Twenty-five girls with prognathism (mean, 7.9 ± 0.9 years old) and 15 girls with normal occlusion (mean, 8.4 ± 1.5 years) participated in this study. On each girl's lateral cephalogram, the coordinates of all points were marked and systematically digitized using a mechanical three-dimensional digitizing system. An independent-groups t-test was used to detect significant upper and lower pharyngeal width differences between the two groups. Correlations between the horizontal positions of each point and upper and lower pharyngeal widths were examined.RESULTS:
Prognathic girls had a significantly wider lower pharyngeal airway compared with those with normal occlusion (P = .01). Furthermore, the horizontal coordinate of Ar was significantly positively correlated with lower pharyngeal airway width in both groups of girls.CONCLUSIONS:
The hypothesis is rejected. The mandible in prognathic girls tends to be positioned more anteriorly, resulting in a wider lower pharyngeal airway.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Faringe
/
Prognatismo
/
Obstrução das Vias Respiratórias
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Limite:
Child
/
Female
/
Humans
Idioma:
En
Revista:
Angle Orthod
Ano de publicação:
2011
Tipo de documento:
Article