Influence of Mandibular Prognathism (class III) on Speech, and Effects of Postoperative Articulation Training

下颌前突（Ⅲ级）对言语的影响及术后构音训练的效果

• 批准号: 11672033
• 负责人: YAMAMOTO Yuko
• 金额: $ 2.37万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11672033/
• 关键词: Malocclusion; Articulation disorder; Articulation Training

We examined the postoperatively persisting articulation failure and the necessity/efficacy of articulation training in patients who had required surgical orthodontic treatment for adverse occlusion. Preoperatively the patients with adverse occlusion combined with open bite had tended to produce more interdental sounds than those with adverse occlusion only, regardless of their overjet values. From our findings that none of the patients with postoperatively persisting open bite improved his or her articulation to normal, and that conspicuous dysarthria became normal in some of the patients whose occlusion was improved by operation, we speculate that open bite influences the production of interdental sounds, although it is not decisively concluded since the patients with adverse occlusion combined with open bite were small in number in the present study. Articulation was improved in overall 40% of the patients by articulation training in the postoperative course. This finding suggests that interdental sounds persist even if surgical treatment has improved occlusion, and that the habituated inderdental sounds can be resolved by articulation training. Considering the fact that interdental sounds are produced by the tongue movements which may reverse the improved occlusion to its previous state, postoperative articulation training is significantly important, if interdental sounds themselves may not make conversation unclear.

我们研究了因咬合不良而需要外科正畸治疗的患者术后顽固性发音障碍和发音训练的必要性/有效性。术前，咬合不良合并开放咬合的患者往往比仅有咬合不良的患者产生更多的牙间声音，无论其覆盖值如何。根据我们的发现，术后持续开放咬合的患者没有一例发音改善到正常，而一些咬合得到改善的患者明显的构音障碍恢复正常，我们推测开放咬合对牙间声音的产生有影响，尽管在本研究中，由于咬合不良合并开放咬合的患者数量较少，因此这一结果并不是决定性的。通过术后过程中的清晰度训练，40%的患者的清晰度得到了改善。这一发现表明，即使手术治疗改善了咬合情况，牙间声音仍然存在，而习惯性的牙内声音可以通过发音训练来解决。考虑到牙间声音是由舌头运动产生的，这可能会将改善后的咬合状态逆转到以前的状态，如果牙间声音本身可能不会使对话变得不清楚，那么术后发音训练就非常重要。