Skeletal effects of RME in the transverse and vertical dimensions of the nasal cavity in mouth-breathing growing children

• Autor(a) principal: Cappellette Jr.,Mario
• Data de Publicação: 2017
• Outros Autores: Nagai,Lucia Hatsue Yamamoto, Gonçalves,Raquel Mori, Yuki,Aparecida Keiko, Pignatari,Shirley Shizue Nagata, Fujita,Reginaldo Raimundo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Dental Press Journal of Orthodontics
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512017000400061
• topic: Palatal expansion technique; Maxilla; Mouth-breathing.

ABSTRACT Introduction: Maxillary constriction is a dentoskeletal deformity characterized by discrepancy in maxilla/mandible relationship in the transverse plane, which may be associated with respiratory dysfunction. Objective: The objective of this study was to evaluate the skeletal effects of RME on maxillary and nasal transverse dimensions and compare the differences between males and females. Methods: Sixty-one mouth-breathers patients with skeletal maxillary constriction (35 males and 26 females, mean age 9.6 years) were included in the study. Posteroanterior (PA) radiographs were taken before expansion (T1) and 3 months after expansion (T2). Data obtained from the evaluation of T1 and T2 cephalograms were tested for normality with the Kolmogorov-Smirnov method. The Student’s t-test was performed for each measurement to determine sex differences. Results: RME produced a significant increase in all linear measurements of maxillary and nasal transverse dimensions. Conclusions: No significant differences were associated regarding sex. The RME produced significant width increases in the maxilla and nasal cavity, which are important for treatment stability, improving respiratory function and craniofacial development.