对上颌骨切除术后安装假体的患者的前三个共振频率进行数字声学分析。

IF 4.3 2区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Journal of Prosthetic Dentistry Pub Date : 2024-11-01 DOI:10.1016/j.prosdent.2022.10.010
Yujia Wang BDS, DDS , Mariko Hattori DDS, PhD , Rongguang Liu MBBS, PhD , Yuka I. Sumita DDS, PhD
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引用次数: 0

摘要

问题简介:上颌骨切除术后患者使用闭合器进行修复,有助于恢复或提高语言清晰度。2002 年首次报道了上颌骨缺损患者 1 号和 2 号构音的频率及其范围,当时使用的评估方法现已用于临床评估。然而,由于语言科学认为 3 号心音与咽腔容积有关,因此 3 号心音的详细情况尚不清楚,值得研究。目的:本临床研究的目的是在颌面修复治疗过程中,通过数字声学分析确定 3 号声门以及 1 号和 2 号声门的声学特征。研究还评估了确定 3 号声门在评估上颌骨切除术后患者语音方面的实用性:共纳入了 26 名上颌骨切除术后的男性患者(平均年龄为 63 岁;年龄范围为 20 至 93 岁),并记录了在使用和未使用确定性闭锁义齿的情况下发出的 5 个日语元音 /a/、/e/、/i/、/o/ 和 /u/。使用语音分析系统(Computerized Speech Lab CSL 4400)测定了 3 个声母的频率,并计算了它们的范围。使用 Wilcoxon 符号秩检验比较两种使用条件下的前音(α=0.05):结果:使用条件之间所有 3 个声母的频率和范围都存在显著差异。使用假体时产生的 3 个声母的范围都明显大于未使用假体时产生的声母:根据研究结果,佩戴闭锁器假体后,前 2 个合成音和第 3 个合成音都发生了变化。由于第 3 个形态音与咽腔的容积有关,因此对该形态音及其范围的评估可以反映出义齿在封闭口鼻沟通和帮助减少高鼻音方面的效果,这表明第 3 个形态音分析在义齿修复中是有用的。
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Digital acoustic analysis of the first three formant frequencies in patients with a prosthesis after maxillectomy

Statement of problem

Prosthetic rehabilitation with an obturator can help to restore or improve the intelligibility of speech in patients after maxillectomy. The frequency of formants 1 and 2 as well as their ranges were initially reported in patients with maxillary defects in 2002, and the evaluation method that was used is now applied in clinical evaluation. However, the details of formant 3 are not known and warrant investigation because, according to speech science, formant 3 is related to the pharyngeal volume. Clarifying the formant frequency values of formant 3 in patients after maxillectomy would enable prosthodontists to refer to these data when planning treatment and when assessing the outcome of an obturator.

Purpose

The purpose of this clinical study was to determine the acoustic characteristics of formant 3, together with those of formants 1 and 2, by using a digital acoustic analysis during maxillofacial prosthetic treatment. The utility of determining formant 3 in the evaluation of speech in patients after maxillectomy was also evaluated.

Material and methods

Twenty-six male participants after a maxillectomy (mean age, 63 years; range, 20 to 93 years) were included, and the 5 Japanese vowels /a/, /e/, /i/, /o/, and /u/ produced with and without a definitive obturator prosthesis were recorded. The frequencies of the 3 formants were determined, and their ranges were calculated by using a speech analysis system (Computerized Speech Lab CSL 4400). The Wilcoxon signed rank test was used to compare the formants between the 2 use conditions (α=0.05).

Results

Significant differences were found in the frequencies and ranges of all 3 formants between the use conditions. The ranges of all 3 formants produced with the prosthesis were significantly greater than those produced without it.

Conclusions

Based on the findings, both the first 2 formants and the third formant were changed by wearing an obturator prosthesis. Because formant 3 is related to the volume of the pharynx, evaluation of this formant and its range can reflect the effectiveness of the prosthesis to seal the oronasal communication and help reduce hypernasality, suggesting the utility of formant 3 analysis in prosthodontic rehabilitation.
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来源期刊
Journal of Prosthetic Dentistry
Journal of Prosthetic Dentistry 医学-牙科与口腔外科
CiteScore
7.00
自引率
13.00%
发文量
599
审稿时长
69 days
期刊介绍: The Journal of Prosthetic Dentistry is the leading professional journal devoted exclusively to prosthetic and restorative dentistry. The Journal is the official publication for 24 leading U.S. international prosthodontic organizations. The monthly publication features timely, original peer-reviewed articles on the newest techniques, dental materials, and research findings. The Journal serves prosthodontists and dentists in advanced practice, and features color photos that illustrate many step-by-step procedures. The Journal of Prosthetic Dentistry is included in Index Medicus and CINAHL.
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