Voice characteristics before versus after mandibular setback surgery in patients with mandibular prognathism using nonlinear dynamics and conventional acoustic analyses
Voice characteristics before versus after mandibular setback surgery in patients with mandibular prognathism using nonlinear dynamics and conventional acoustic analyses
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DOI：
10.1016/j.jcms.2012.01.021
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发表时间：
2013-12-01
影响因子：
3.1
通讯作者：
Ueyama, Yoshiya
中科院分区：
文献类型：
--
作者：
Mishima, Katsuaki;Moritani, Norifumi;Ueyama, Yoshiya
目的：探讨下颌前突患者的嗓音特征，并用非线性动力学和常规声学分析方法研究下颌后退术对其影响。材料与方法：16例无腭裂的骨性III类错牙合患者，均接受双侧升支矢状劈开截骨术。健康成人50例(男25例，女25例)作为对照组。结果与结论：BSSRO手术后，男性/u/、女性/o/和男性/i/和/u/的mLE1和/i/和/u/的F2s发生了显著变化。在男性和女性的/i/的mLE1，女性的/a/、/i/、/u/和/o/的F0，男性的/a/的F1和F2，女性的/i/的F1和F2中观察到了III类语音特征。这些特征在BSSRO手术后大部分得以保留。(C)2013年欧洲颅颌面部外科协会。爱思唯尔有限公司出版。保留所有权利。
Objectives: The purpose of this study was to explore the voice characteristics of patients with mandibular prognathism, and to investigate the effects of mandibular setback surgery on these characteristics using nonlinear dynamics and conventional acoustic analyses.Materials and methods: Sixteen patients (8 males and 8 females) who had skeletal 3, class III malocclusion without cleft palate, and who underwent a bilateral sagittal split ramus osteotomy (BSSRO), were enrolled. As controls, 50 healthy adults (25 males and 25 females) were enrolled. The mean first LEs (mLE1) computed for each one-second interval, and the fundamental frequency (F0) and frequencies of the first and second formant (F1, F2) were calculated for each Japanese vowel.Results and conclusions: The mLE1s for /u/ in males, and /o/ in females and the F2s for /i/ and /u/ in males, changed significantly after BSSRO. Class III voice characteristics were observed in the mLE1s for /i/ in both males and females, in the F0 for /a/, /i/, /u/ and /o/ in females, and in the F1 and F2 for /a/ in males, and the F1 for /u/ and the F2 for /i/ in females. Most of these characteristics were preserved after BSSRO. (C) 2013 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.