The correlation between craniofacial morphology and sleep-disordered breathing in children in an undergraduate orthodontic clinic
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The aim of this study was to assess children in an orthodontic teaching clinic to determine the relationship between sleep-disordered breathing (SDB) symptoms and craniofacial morphology.
All parents were asked to complete a SDB questionnaire at the commencement of orthodontic therapy. A cephalometric analysis included face heights, hyoid position, soft palate lengths, mandibular, vertical airway, overjet, and overbite. Study model measurements included dental width, depth, and palatal height. The subjects were divided into two groups according to their dentition stage: early or late mixed.
Data from 173 children (male 50.3%, mean age 10.1 ± 1.7 years) that completed the OSA-18 questionnaire and the cephalometric (CA) and model (MA) analyses were evaluated. The questionnaire suggested that only two children in the orthodontic pool had an increased chance of exhibiting SDB. However, loud snoring, mouth breathing, and difficulty awakening were reported in more than 20% of the children. Overall, a higher total score correlated with retroclined upper incisors (CA) and high palatal height (MA, p < 0.05). Although there was no significant score differences between the groups, a higher total score correlated with a long soft palate (CA, p < 0.05) in the early mixed dentition group and a high palatal height (MA) in the late mixed dentition group (p < 0.05).
Even though few patients were suspected as having SDB, symptoms were related to many cephalometric variables and study model measurements. Since the etiology of SDB is believed to involve multiple factors, such patients may exhibit some risk of developing SDB in the future.
KeywordsSleep apnea Orthodontics Questionnaire Cephalometric analysis Model analysis
The authors would like to thank Mrs. Ingrid Ellis for her editorial assistance in the final presentation of this manuscript. Financial support for this study was received from MITACS Graduate Research Internship Program and from Klearway royalties paid to the University of British Columbia.
- 7.Ozdemir H, Altin R, Sogut A, Cinar F, Mahmutyazicioglu K, Kart L, Uzun L, Davsanci H, Gundogdu S, Tomac N (2004) Craniofacial differences according to AHI scores of children with obstructive sleep apnoea syndrome: cephalometric study in 39 patients. Pediatr Radiol 34:393–399PubMedCrossRefGoogle Scholar
- 10.Linder-Aronson S (1972) Effects of adenoidectomy on dentition and nasopharynx. Trans Eur Orthod Soc 177–186Google Scholar
- 16.Moorrees CFA (1959) The dentition of the growing child; a longitudinal study of dental development between 3 and 18 years of age. Harvard University Press, CambridgeGoogle Scholar
- 18.Moyers RE, University of Michigan. Center for Human Growth and Development (1976) Standards of human occlusal development. Center for Human Growth and Development, Ann ArborGoogle Scholar
- 19.Dahlberg G (1940) Statistical methods for medical and biological students. G. Allen & Unwin ltd., LondonGoogle Scholar