Related Experiment Videos
[The assessment of nasopharyngeal airway space]
Insights
The adenoidal-nasopharyngeal ratio in children decreases with age, indicating changes in airway space. This study evaluated this ratio across different age groups using cephalograms.
Area of Science:
- Dentistry
- Orthodontics
- Pediatrics
Context:
- Nasopharyngeal airway space is crucial for children's respiratory health.
- Adenoid tissue size and nasopharynx dimensions influence airway patency.
- Age-related changes in the nasopharyngeal airway are not fully understood.
Purpose:
- To evaluate the adenoidal-nasopharyngeal ratio in children aged 7-16 years.
- To assess changes in nasopharyngeal airway space with age using cephalograms.
- To determine the relationship between age and the adenoidal-nasopharyngeal ratio.
Summary:
- This study analyzed cephalograms of 200 children (7-16 years) with normal occlusion and no history of airway issues.
- The adenoidal-nasopharyngeal ratio was measured across five age groups: 7-8, 9-10, 11-12, 13-14, and 15-16 years.
- Results showed a decreasing trend in the adenoidal-nasopharyngeal ratio with increasing age, from 0.557 at 7-8 years to 0.415 at 15-16 years.
Impact:
- Provides normative data for the adenoidal-nasopharyngeal ratio across different pediatric age groups.
- Highlights age-related changes in nasopharyngeal airway dimensions.
- Informs orthodontic and pediatric assessments of nasal airway obstruction.
Abstract:
In children, the nasopharyngeal airway space is provided by the size of adenoid tissue on the posterior nasopharyngeal wall and the size of nasopharynx. This airway space will be changed by the age. The objective of this study is for evaluating this airway space at the age group 7-8 years, 9-10 years, 11-12 years, 13-14 years and 15-16 years from the cephalograms by assessing is the form of adenoidal-nasopharyngeal ratio. Two hundred subjects (97 boys, 103 girls) were selected without histories of mouth breathing, or adenoidectomy or previous orthodontic treatment and cephalometrically, they are shown normal inclination of the maxilla and the mandible to cranial base, normal facial index and no anterior open-bite. They were divided into 40 subjects on each age group. From the study, the adenoidal-nasopharyngeal ratio were found 0.557, 0.487, 0.512, 0.470 and 0.415 at the age 7-8 years, 9-10 years, 11-12 years, 13-14 years and 15-16 years respectively.