Comparison of airway dimensions in skeletal Class I malocclusion subjects with different vertical facial patterns

• Main Authors: Ana Paula Flores-Blancas (Author), Marcos J. Carruitero (Author), Carlos Flores-Mir (Author)
• Format: Book
• Published: Dental Press Editora.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 2177-6709; 10.1590/2177-6709.22.6.035-042.oar
• Keywords: Vias aéreas superiores; Padrão facial vertical; Análise de McNamara; Índice VERT; Dentistry; RK1-715
• Source: Dental Press Journal of Orthodontics, Vol 22, Iss 6, Pp 35-42

ABSTRACT Objective: The aim of this study was to compare upper airway widths among skeletal Class I malocclusion subjects with different vertical facial patterns. Methods: The sample included a total of 99 lateral cephalograms of post pubertal individuals (18.19 ± 1.76 years old). The vertical facial pattern was determined by the Vert index. The McNamara method was used to quantify upper airway widths. ANOVA test and Student's t test for independent groups were used, when normal distribution was not supported Kruskal-Wallis test and U-Mann-Whitney test were used. A multiple linear regression analysis was also performed. Results: Statistically significant differences in several nasopharyngeal widths were found among the distinct vertical facial patterns. Subjects with brachyfacial pattern presented larger nasopharyngeal widths than subjects with mesofacial (p= 0.030) or dolichofacial (p= 0.034) patterns. The larger the Vert value, the larger the nasopharyngeal widths (R2= 26.2%, p< 0.001). At the level of oropharynx no statistically significant differences were found. Conclusion: It was concluded that nasopharyngeal linear anteroposterior widths in Class I malocclusion brachyfacial are larger than in mesofacial and dolichofacial individuals. The Vert index only explained 25% of the total variability. No correlation was found for the oropharyngeal widths.