Prevalence of maloclusion in patients with Down’s Syndrome in the city of Teresina-PI

Abstract

Objective: To assess the prevalence of malocclusion in individuals with Down’s Syndrome in the city of Teresina– Piauí, by a direct examination of their teeth, according to Angle’s classification.Methods: The sample of this study consisted of Down’s Syndrome patients who attend the Exceptionals’ Parents and Friends Association - 10 patients, Pestalozzi Society – 18 patients; and the Special Education Integrated Centre - 29 patients; a total of 57 patients. Clinical examination was carried out and data regarding malocusion type, presence/absence of anterior open bite and anterior and posterior cross bite were recorded in a specifically designed form. The study was carried out according to the norms that regulate research in human beings in resolution nº196/96 of the National Health Council and II Helsinki Declaration II (2000). Results: Sixty percent of the patients had Angle’s class III malocclusion, 12% had anterior open bite; 26% had anterior crossbite and 44%t hasposterior crossbite, with the bilateral type (52%) being more prevalent. Conclusion: Angle’s class III was the most prevalent maloclusion and there was a low prevalence of anterior open bite and cross bite among Down’s Syndrome patients. Moreover, there was no statistical difference in the prevalence of posterior cross bite (p=0,35).

Keywords

• Down’s syndrome
• prevalence
• malocclusion
• Síndrome de Down
• prevalência
• maloclusão