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Craniofacial and airway growth in 9–11 years old normal dental occlusion in Iranian adolescents: A longitudinal cephalometric study
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Craniofacial and airway growth in 9–11 years old normal dental occlusion in Iranian adolescents: A longitudinal cephalometric study
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Journal Article
Craniofacial and airway growth in 9–11 years old normal dental occlusion in Iranian adolescents: A longitudinal cephalometric study
2017
Overview
Introduction: The present study was aimed to assess the amount and direction of growth in cranial base, jaws, and soft tissue of airway structures by cephalometric analysis in 9-11-years-old Iranian girls and boys. Materials and Methods: Thirty-four Iranian children with normal occlusion and class I molar relationships were recruited, and 2 lateral cephalograms were obtained from 9 and 11-year-old children Cephalometric variables included variables defining cranial base length and angle, maxillomandibular length and height, dental relationship, head and cervical position, soft palate and tongue, vallecula and hyoid position, and pharyngeal dimension. Normal distribution was confirmed by Kolmogorov-Smirnov analysis (P>0.05). Paired t-test was used for assessing growth changes. P value was set at 0.05. Results: Anterior, posterior, and total cranial base length were increased significantly. The increase in total and upper anterior, total and lower posterior facial heights, ramus height, and palatal inclination were statistically significant. Maxillomandibular length increased significantly with insignificant change in their position. Dental relationship and head and cervical posture were stable. Oropharyngeal and nasopharyngeal anteroposterior dimension did not change. However, hypopharynx sagittal length increased significantly. Nasopharyngeal vertical dimension increased and hyoid moved anteriorly and inferiorly. Conclusion: The results of the present study showed that cranial base and jaws grow anteriorly and inferiorly while maintaining dental occlusion and head posture. Most of the airway structures grow simultaneously with craniofacial components.
Publisher
Medknow Publications & Media Pvt. Ltd,Wolters Kluwer Medknow Publications
Subject
