RESUMEN
INTRODUCTION: To evaluate the effects of clear aligner therapy (CAT) on the upper airway dimensions and on daytime sleepiness in adults with dentoskeletal Class II malocclusion. METHODS: This study was conducted from August 2017 to February 2019. Inclusion criteria were healthy adults≥18years old, Angle Class II division 1 malocclusion, first-molar relationship of end-to-end or greater, overjet<10mm, and presenting for multi-arch comprehensive orthodontic treatment with aligners. Treatment mechanics included mandibular dentoalveolar advancement with Class II elastics without maxillary sequential distalization programmed into aligners. Post-treatment changes in dentoskeletal and upper airway dimensions were assessed using CBCT images. The treatment effect on daytime sleepiness was evaluated using an Epworth Sleepiness Scale (ESS). RESULTS: Eight subjects were included in this pilot study (mean age at treatment initiation=44.6years [SD=15.3]). The mean treatment duration was 12.2months (SD=3.4). No statistically significant treatment changes were observed in upper airway dimensions or dentoskeletal cephalometric analyses. Subjects with excessive daytime sleepiness at pre-treatment reported an improvement post-treatment, but no significant difference in the mean ESS score was found. CONCLUSION: Treatment of Class II division 1 malocclusion in adults by mandibular dentoalveolar advancement using CAT has no statistically significant effects on the airway and dentoskeletal measurements, or daytime sleepiness.
Asunto(s)
Trastornos de Somnolencia Excesiva/prevención & control , Maloclusión Clase II de Angle/patología , Maloclusión Clase II de Angle/terapia , Aparatos Ortodóncicos Removibles , Faringe/anatomía & histología , Técnicas de Movimiento Dental , Adulto , Cefalometría , Tomografía Computarizada de Haz Cónico , Trastornos de Somnolencia Excesiva/etiología , Femenino , Humanos , Masculino , Maloclusión Clase II de Angle/complicaciones , Maloclusión Clase II de Angle/diagnóstico por imagen , Faringe/diagnóstico por imagen , Proyectos Piloto , Adulto JovenRESUMEN
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: The effect of teeth extraction for orthodontic treatment on the upper airway: a systematic review. Hu Z, Yin X, Liao J, Zhou C, Yang Z, Zou S. Sleep Breath 2015;19(2):441-51. SOURCE OF FUNDING: The review was supported by the National Nature Science Foundation of China and the Research Fund for the Doctoral Program of Higher Education in China. TYPE OF STUDY/DESIGN: Systematic review.