Vertical interincisal trespass assessment in children with speech disorders

• Published in: Brazilian oral research 2008-09, Vol.22 (3), p.247-251
• Main Authors: Sahad, Marcelo de Gouveia, Nahás, Ana Carla Raphaelli, Scavone-Junior, Helio, Jabur, Luciana Badra, Guedes-Pinto, Eduardo
• Format: Article
• Language: English
• Subjects: Articulation Disorders - etiology; Brazil - epidemiology; Chi-Square Distribution; Child; Child, Preschool; Cross-Sectional Studies; Dentistry; DENTISTRY, ORAL SURGERY & MEDICINE; Female; Humans; Male; Malocclusion; Malocclusion - complications; Malocclusion - epidemiology; Open bite; Open Bite - complications; Open Bite - epidemiology; Orthodontics; Prevalence; Speech Articulation Tests; Speech disorders; Speech Disorders - etiology; Tongue Habits - adverse effects
• ISSN: 1806-8324; 1807-3107; 1807-3107; 1806-8324
• DOI: 10.1590/S1806-83242008000300010

Through a transversal epidemiological study, conducted with 333 Brazilian children, males (157) and females (176), aged 3 to 6 years old, enrolled in a public preschool, this study aimed to evaluate the prevalence of the different types of vertical interincisal trespass (VIT) and the relationship between these occlusal aspects and anterior lisping and/or anterior tongue thrust in the articulation of the lingua-alveolar phonemes /t/, /d/, /n/ and /l/. All children involved were submitted to a VIT examination and to a speech evaluation. Statistical significance was analyzed through the Qui-square test, at a significance level of 0.05 (95% confidence limit). The quantitative analysis of the data demonstrated the following prevalences: 1 - the different types of VIT: 48.3% for normal overbite (NO), 22.5% for deep overbite (DO), 9.3% for edge to edge (ETE) and 19.8% for open bite (OB); 2 - interdental lisping in relation to the different types of VIT: 42% for NO, 12.5% for DO, 12.5% for ETE, 32.9% for OB; and 3 - children with anterior tongue thrust in the articulation of lingua-alveolar phonemes in relation to the different types of VIT: 42.1% for NO, 14% for DO, 10.5% for ETE, 33.3% for OB. The results demonstrated that there was a significant relationship between open bite and anterior lisping and/or anterior tongue thrust in the articulation of the lingua-alveolar phonemes /t/, /d/, /n/ and /l/; and that there was a significant relationship between deep overbite and the absence of anterior lisping and anterior tongue thrust in the articulation of the lingua-alveolar phonemes.