Nemetz Marcos Antônio, Pontes Paulo Augusto de Lima, Vieira Vanessa Pedrosa, Yazaki Reinaldo Kazuo
Universidade Regional de Blumenau-FURB.
Braz J Otorhinolaryngol. 2005 Jan-Feb;71(1):6-12. doi: 10.1016/s1808-8694(15)31277-5. Epub 2006 Jan 2.
The real participation of the vestibular folds during phonation mechanism is unknown. How vestibular folds change their configuration during phonation is still unclear. Learning about these changes in the functional mechanism of vestibular fold would be helpful for the evaluation of pathological conditions.
The objective of the present study was to analyze the configuration of laryngeal vestibular folds during phonation (sustained emission of vowel /mu/) by comparing exams of individuals without vocal complaints (the normal voice group) with those with vocal complaints.
Transversal simple study.
120 images of larynges were analyzed, 60 of normal voice individuals and 60 of dysphonic subjects, with equal gender distribution. The position of the free margin of the vestibular fold was identified in relation to a straight line that brought together the anterior and posterior insertions. Regarding this position, three types of configurations were described: concave, when it was in a lateral position, convex when it was in a medial position, and linear when it overlapped.
Out of the 240 vestibular folds, 158 were concave, 41 convex and 31 linear. The concave form was predominant in both groups in relation to the other two forms, although the number of convex and linear forms increased in the dysphonic group. Analyzing the behavior of these forms in each gender we noticed that among women, the linear form was significantly increased in the dysphonic group, whereas among men there was significant increase in convex form.
We concluded that there were differences in behavior of vestibular folds in the dysphonic group in relation to the normal voice group, and that the differences occurred differently in both gender groups.
声门襞在发声机制中的实际参与情况尚不清楚。声门襞在发声过程中如何改变其形态仍不明确。了解声门襞功能机制的这些变化将有助于评估病理状况。
本研究的目的是通过比较无嗓音问题个体（正常嗓音组）和有嗓音问题个体的检查结果，分析发声（持续发元音/mu/）时喉前庭襞的形态。
横向简单研究。
分析120张喉部图像，正常嗓音个体60张，发音障碍受试者60张，性别分布均衡。确定前庭襞游离缘相对于连接前后附着点的直线的位置。关于该位置，描述了三种形态类型：凹形，当其处于外侧位置时；凸形，当其处于内侧位置时；线形，当其重叠时。
在240个前庭襞中，158个为凹形，41个为凸形，31个为线形。与其他两种形态相比，凹形在两组中均占主导，尽管发音障碍组中凸形和线形的数量有所增加。分析每种性别中这些形态的表现，我们注意到，在女性中，发音障碍组中线形显著增加，而在男性中，凸形显著增加。
我们得出结论，发音障碍组前庭襞的表现与正常嗓音组存在差异，且这种差异在两个性别组中表现不同。
