Surgical maxillary advancement and speech resonance: comparison among cleft types. / Avanço cirúrgico de maxila e ressonância de fala: comparação entre os tipos de fissura.

Purpose This study investigated the influence of the cleft type on the appearance of hypernasality after surgical maxillary advancement (MA). Methods Nasality was determined by measurement of nasalance (acoustic correlate of nasality) by nasometry. The study involved analysis of the nasalance scores of 17 individuals with isolated cleft palate (CP), 118 with unilateral cleft lip and palate (UCLP) and 69 with bilateral cleft lip and palate (BCLP), of both sexes, aged 18 to 28 years, after MA. Only individuals with normal nasalance scores indicating balanced resonance before MA were included in this study. Nasometry was performed 3 days before and 15 months after MA, on average. The proportion of patients who presented nasalance scores indicating hypernasality after surgery was calculated by the ANOVA test, and comparison among the different cleft types was evaluated by the chi-square test (p < 0.05). Results No significant difference was found in the proportions of individuals with hypernasality among the cleft types. Conclusion Nasometry showed that the appearance of hypernasality after MA in individuals with cleft palate with or without cleft lip occurred in similar proportions, regardless of the cleft type.

A secção cirúrgica do retalho faríngeo pode comprometer a ressonância de fala de indivíduos com fissura labiopalatina? / Could the speech resonance of individuals with cleft lip and palate be affected by complete section of pharyngeal flap?

RESUMO Objetivo Investigar o efeito da cirurgia para secção completa do retalho faríngeo sobre a hipernasalidade de fala. Métodos Foram avaliados 26 indivíduos com fissura de palato±lábio reparada, submetidos à cirurgia de retalho faríngeo para tratamento da insuficiência velofaríngea e que, em função do aparecimento de queixas respiratórias, necessitaram nova cirurgia para secção do retalho. A hipernasalidade foi determinada por meio das avaliações perceptiva e nasométrica da fala 18 meses, em média, após a secção do retalho. Na avaliação perceptiva, a hipernasalidade foi classificada como: 1 = ausente ou 2 = presente e, na nasometria, foi determinada por meio da medida da nasalância durante a leitura de sentenças contendo, exclusivamente, sons orais, considerando-se, como limite de normalidade, o escore de 27% (p ≤ 0,05). Resultados A avaliação perceptiva mostrou que, antes da secção do retalho, oito (31%) indivíduos apresentavam ressonância equilibrada e 18 (69%) apresentavam hipernasalidade. Após a cirurgia, um (4%) paciente permaneceu com ressonância equilibrada e 25 (96%) apresentaram hipernasalidade. De acordo com a nasometria, antes da cirurgia, 13 (57%) indivíduos apresentaram valores de nasalância inferiores a 27%, indicando ausência de hipernasalidade (média = 15±8%) e dez (43%) pacientes apresentaram valores indicativos de hipernasalidade (média = 41±7%). Após a cirurgia, quatro (17%) pacientes permaneceram com valores indicativos de ausência de hipernasalidade (média = 19±10%) e 19 (83%) apresentaram valores de nasalância indicativos de hipernasalidade (média = 45±7%). Diferença entre as avaliações perceptiva e nasométrica da fala não foi observada. Conclusão A cirurgia para secção completa do retalho faríngeo causou deterioração da ressonância de fala, levando ao reaparecimento da hipernasalidade, na maioria dos pacientes estudados.

ABSTRACT Purpose To investigate the effect of complete section of pharyngeal flap on speech hypernasality. Methods The study analyzed twenty-six individuals with repaired cleft palate±lip underwent pharyngeal flap surgery to treat velopharyngeal insufficiency and posteriorly underwent complete section of the flap due to the occurrence of respiratory symptoms. Hypernasality was determined by auditory-perceptual speech assessments and nasometry at 18 months after surgery, on average. Hypernasality was perceptually classified as: 1 = absent or 2 = present and determined by nasalance measurement during reading of sentences containing exclusively oral sounds, considering a cutoff of 27% (p ≤ 0.05). Results Perceptual assessment before section of the flap revealed that eight (31%) individuals showed normal resonance, while 18 (69%) presented hypernasality. After surgery, one (4%) subject remained with normal resonance and 25 (96%) presented hypernasality. According to nasometry, before surgery, 13 (57%) individuals presented nasalance scores lower than 27%, indicative of absence of hypernasality (mean = 15±8%) and ten (43%) presented nasalance scores indicative of hypernasality (mean = 41±7%). After surgery, four (17%) patients remained with scores indicative of absence of hypernasality (mean = 19±10%) and for 19 (83%) the nasalance scores were indicative of hypernasality (mean = 45±7%). There was no difference between perceptual and nasometric speech evaluations. Conclusion Surgery for complete section of pharyngeal flap caused deterioration of speech resonance, leading to the reappearance of hypernasality in most patients in this study.