Relationships among nasal resistance, adenoids, tonsils, and tongue posture and maxillofacial form in Class II and Class III children.
Am J Orthod Dentofacial Orthop
; 151(5): 929-940, 2017 May.
Article
en En
| MEDLINE
| ID: mdl-28457271
ABSTRACT
INTRODUCTION:
The purpose of this study was to clarify the relationships between upper airway factors (nasal resistance, adenoids, tonsils, and tongue posture) and maxillofacial forms in Class II and III children.METHODS:
Sixty-four subjects (mean age, 9.3 years) with malocclusion were divided into Class II and Class III groups by ANB angles. Nasal resistance was calculated using computational fluid dynamics from cone-beam computed tomography data. Adenoids, tonsils, and tongue posture were evaluated in the cone-beam computed tomography images. The groups were compared using Mann-Whitney U tests and Student t tests. The Spearman rank correlations test assessed the relationships between the upper airway factors and maxillofacial form.RESULTS:
Nasal resistance of the Class II group was significantly larger than that of the Class III group (P = 0.005). Nasal resistance of the Class II group was significantly correlated with inferior tongue posture (P <0.001) and negatively correlated with intermolar width (P = 0.028). Tonsil size of the Class III group was significantly correlated with anterior tongue posture (P <0.001) and mandibular incisor anterior position (P = 0.007). Anterior tongue posture of the Class III group was significantly correlated with mandibular protrusion.CONCLUSIONS:
The relationships of upper airway factors differ between Class II and Class III children.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Patología Bucal
/
Lengua
/
Tonsila Palatina
/
Tonsila Faríngea
/
Resistencia de las Vías Respiratorias
/
Maloclusión Clase II de Angle
/
Maloclusión de Angle Clase III
/
Cavidad Nasal
Tipo de estudio:
Observational_studies
Límite:
Child
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Am J Orthod Dentofacial Orthop
Asunto de la revista:
ODONTOLOGIA
/
ORTODONTIA
Año:
2017
Tipo del documento:
Article