Viegas Flávia, Camargo Zuleica, Viegas Danieli, Guimarães Glaucio Serra, Luiz Ronir Raggio, Ritto Fabio, Simões-Zenari Marcia, Nemr Katia
Department of Speech Therapy, Universidade Federal Fluminense, Nova Friburgo, RJ, Brazil.
Faculty of Medicine, Universidade de São Paulo, São Paulo, Brazil.
Int Arch Otorhinolaryngol. 2022 Nov 10;27(1):e10-e15. doi: 10.1055/s-0041-1730428. eCollection 2023 Jan.
The acoustic analysis of speech (measurements of the fundamental frequency and formant frequencies) of different vowels produced by speakers with the Angle class II, division 1, malocclusion can provide information about the relationship between articulatory and phonatory mechanisms in this type of maxillomandibular disproportion. To investigate acoustic measurements related to the fundamental frequency (F0) and formant frequencies (F1 and F2) of the oral vowels of Brazilian Portuguese (BP) produced by male speakers with Angle class II, division 1, malocclusion (study group) and compare with men with Angle class I malocclusion (control group). In total, 60 men (20 with class II, 40 with class I) aged between 18 and 40 years were included in the study. Measurements of F0, F1 and F2 of the seven oral vowels of BP were estimated from the audio samples containing repetitions of carrier sentences. The statistical analysis was performed using the Student -test and the effect size was calculated. Significant differences ( -values) were detected for F0 values in five vowels ([e], [i], [ᴐ], [o] and [u]), and for F1 in vowels [a] and [ᴐ], with high levels for class II, division 1. Statistical differences were found in the F0 measurements with higher values in five of the seven vowels analysed in subjects with Angle class II, division 1. The formant frequencies showed differences only in F1 in two vowels with higher values in the study group. The data suggest that data on voice and speech production must be included in the protocol's assessment of patients with malocclusion.
对安氏II类1分类错牙合患者所发不同元音进行语音声学分析（测量基频和共振峰频率），可为这种类型的上下颌骨比例失调中发音和发声机制之间的关系提供信息。 为了研究安氏II类1分类错牙合男性患者（研究组）所发巴西葡萄牙语（BP）口腔元音的基频（F0）和共振峰频率（F1和F2）相关的声学测量结果，并与安氏I类错牙合男性患者（对照组）进行比较。 该研究共纳入60名年龄在18至40岁之间的男性（20名II类患者，40名I类患者）。从包含载体句子重复的音频样本中估计BP七个口腔元音的F0、F1和F2。采用Student检验进行统计分析并计算效应量。 在五个元音（[e]、[i]、[ᴐ]、[o]和[u]）的F0值以及元音[a]和[ᴐ]的F1值中检测到显著差异（p值），II类1分类患者的差异水平较高。 在安氏II类1分类受试者分析的七个元音中的五个元音的F0测量中发现了统计学差异，其值较高。共振峰频率仅在两个元音的F1中显示出差异，研究组中的值较高。数据表明，错牙合患者的评估方案中必须纳入关于嗓音和言语产生的数据。
