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OBJETIVO: estudar a posição habitual da língua e dos lábios nos padrões de crescimento anteroposterior e vertical de crianças em fase de dentição mista. MÉTODOS: a amostra foi constituída por 54 crianças, na faixa etária entre sete e 11 anos. As crianças selecionadas foram encaminhadas para avaliação radiográfica e análise cefalométrica, que possibilitou a obtenção de ângulos SNA, SNB e ANB (padrão de crescimento anteroposterior) e da classificação do tipo facial entre braquifacial, mesofacial e dolicofacial (padrão de crescimento vertical). A posição da língua e dos lábios foi determinada a partir da observação das radiografias cefalométricas por duas fonoaudiólogas com experiência na área de motricidade orofacial. A posição habitual da língua foi classificada como na papila palatina, com dorso elevado ou no assoalho oral, e a posição habitual dos lábios, como fechados ou entreabertos/abertos. Para verificar a relação entre a posição habitual da língua e dos lábios com os padrões de crescimento anteroposterior e vertical foram utilizados os testes estatísticos Análise de Variância, t de Student, U de Mann-Whitney e Qui-Quadrado, ao nível de significância de 5%. RESULTADOS: verificou-se relação estatisticamente significante entre a posição da língua e o ângulo SNB, sendo que as crianças com posição de língua no assoalho oral apresentaram ângulo SNB significantemente menor do que as crianças com posição habitual de língua na papila palatina. Verificou-se ângulo SNB significantemente menor nas crianças com posição de lábios entreabetos ou abertos quando comparadas às crianças com posição de lábios fechados. Não houve diferença entre a posição habitual da língua e dos lábios nos demais padrões de crescimento anteroposterior e de crescimento vertical. CONCLUSÃO: a posição habitual de lábios e de língua apresentou relação com o padrão de crescimento mandibular, não tendo sido influenciada pelo tipo facial.

Purpose: to study the usual tongue and lips position in anteroposterior and vertical growth patterns in children with mixed dentition. Methods: the sample comprised 54 children, aged seven to 11 years old. The selected children were referred for radiographic evaluation and cephalometric analysis, which made it possible to obtain the SNA, SNB and AND angles (anteroposterior growth pattern) and the classification of the facial type: brachyfacial, mesofacial and dilocofacial (vertical growth pattern). The tongue and lips position was determined from the observation of cephalometric radiographs made by two speech therapists experienced in orofacial motricity. The usual tongue position was classified as in the papilla, high dorsum or on the floor of the mouth, and the usual lips position, as closed or half-open/open. In order to verify the relationship between the usual tongue and lips position with anteroposterior and vertical growth patterns, statistical tests like Analysis of variance, Student's t test, Mann-Whitney U and chi-square test at a significance level of 5% was used. Results: a statistically significant relationship between the tongue position and the SNB angle was identified, children with tongue position on the floor of the mouth showed significantly lower SNB angle than children with tongue position in the papilla. SNB angle was a statistically significant lower in children with open or half open lips than children with closed lips. There was no difference between the normal position of the tongue and lips in other growth patterns anteroposterior and vertical growth. Conclusion: The usual position of lips and tongue were related to mandibular growth pattern and hasn't been influenced by facial type. [ABSTRACT FROM AUTHOR]

Purpose: to study the usual tongue and lips position in anteroposterior and vertical growth patterns in children with mixed dentition. Methods: the sample comprised 54 children, aged seven to 11 years old. The selected children were referred for radiographic evaluation and cephalometric analysis, which made it possible to obtain the SNA, SNB and AND angles (anteroposterior growth pattern) and the classification of the facial type: brachyfacial, mesofacial and dilocofacial (vertical growth pattern). The tongue and lips position was determined from the observation of cephalometric radiographs made by two speech therapists experienced in orofacial motricity. The usual tongue position was classified as in the papilla, high dorsum or on the floor of the mouth, and the usual lips position, as closed or half-open/open. In order to verify the relationship between the usual tongue and lips position with anteroposterior and vertical growth patterns, statistical tests like Analysis of variance, Student's t test, Mann-Whitney U and chi-square test at a significance level of 5% was used. Results: a statistically significant relationship between the tongue position and the SNB angle was identified, children with tongue position on the floor of the mouth showed significantly lower SNB angle than children with tongue position in the papilla. SNB angle was a statistically significant lower in children with open or half open lips than children with closed lips. There was no difference between the normal position of the tongue and lips in other growth patterns anteroposterior and vertical growth. Conclusion: The usual position of lips and tongue were related to mandibular growth pattern and hasn't been influenced by facial type. [ABSTRACT FROM AUTHOR]

ABSTRACT Objective: to evaluate the resistance and pressure of the lips in Class I, II and III Angle’s malocclusion subjects, in comparison to reference values and relate them with gender and age. Methods: a quantitative, descriptive and cross-sectional study. Participants included 40 subjects, 20 women and 20 men, average age 26.3 years, separated by occlusal classification. The volunteers answered on the self-reported performance of the stomatognathic functions and were submitted to the evaluation of the mobility and posture of the lips. Pressure and resistance were measured with the Iowa Oral Performance Instrument (IOPI) and the results compared to the reference values described in the instrument´s manual. The data were analyzed descriptively and, for inferential analysis, Pearson's Chi-Square test was used. The significance level was considered 5%. Results: a decrease in pressure and resistance values wasobserved in all patients, including Angle’s class I group. There was an inverse relationship between the age of the subjects and the values of pressure of lips with statistical significance (p = 0.02). In general, women had lower pressure values than men. Conclusion: all study subjects had lower pressure of the lips than the reference values described in the literature.