Avaliação tridimensional da via aérea superior de pacientes com apneia obstrutiva do sono que utilizaram aparelho de avanço mandibular / Upper airway three-dimensional of obstructive sleep apnea patients using a mandibular advancement device

AUTOR(ES)

Luciana Baptista Pereira Abi-Ramia

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

18/12/2009

RESUMO

The aim of this study were to evaluate the effect of a mandibular advancement device (Twin Block TB) in the upper airway volume, with cone beam computed tomography (CBCT); to analyze, by polysomnographys, changes in apnea and hipopnea index per hour (AHI), apnea index per hour of sleep (AI), oxyhemoglobin saturation and sleep efficiency; and correlate changes in volume in CBCT and the results of polysomnography. Sixteen OSA patients, mean age of 47.07 years, participated in this prospective study, with follow up of 7 months. Initial polysomnography (T1) and follow up polysomnography (T2) were taken with TB in position, and CBCT with and without TB were taken. Upper airway segmentations and volumes were performed and were evaluated by the Student t test, the Wilcoxon test, and Spearman correlation, with 5% significance level. The results of the polysomnographs showed statistically significant differences between T1 and T2, only for AHI (p<0.05). There was an increased airway volume with TB in position when compared to volume without TB (p<0.05). A positive correlation between upper airway volume without TB and T1 AHI and AI was established (p<0.05), but there was no correlation between upper airway volume with TB and T2 polysomnography indexes. In conclusion, there was an increase in volume of the upper airway with the TB and reduction of AHI in T2 but without correlation with these data.

ASSUNTO(S)

ortodontia síndrome das apneias do sono polissonografia tomografia computadorizada aparelhos ativadores ortodontia instrumentos e aparelhos odontológicos orthodontics obstructive sleep apnea syndrome polysomnography computed tomography activator appliance

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