Of the 439 children evaluated, 137 were older than five years and had speech disorders. Of these, 64 were females and 73 males, divided into age groups: 37.2% were aged between 5 and 6 years, 30.7% between 7 and 8 years old, 19% between 9 and 10 years, and 13.1% between 11 and 12 years. The type of breathing in patients with speech disorders was oro-nasal in 44.5% and oral in 55.5%. The etiological cause of nasal obstruction was defined as follows: A in 35.8% of patients, H in 21.2%, A +H in 33.6%, and and F in 9.5%.