骨性Ⅲ类错He畸形对语音功能的影响

为了探讨骨性Ⅲ类错Ｈｅ畸形对语音功能的是否有影响，我们以２０名骨性Ⅲ类错Ｈｅ畸形的成年患者为研究对象，由语音专家对其语音进行判听，同是应用计算机语音工作站（ｃｏｍｐｕｔｅｒｉｚｅｄｓｐｅｅｃｈｌａｂ）进行了语音声学分析，结果表明：（１）多数此类错Ｈｅ患者存在的语音功能异常，在ｚｈ，ｃｈ，ｓｈ，ｚ诸输音上最常见出现发音错误，错误类型为发音失真（ｄｉｓｔｏｒｔｉｏｎ）和发音替代（ｓｕｂｓｔｉｔｕｔｉｏ

Effect of skeletal Class III malocclusion on speech articulation]

The purpose of this study was to investigate the effects of skeletal class III malocclusion on speech articulation. The subject was twenty skeletal class III malocclusion adults. Their articulations were evaluated by phoneticians and the disordered speech sounds were analysed by computerized speech lab. It was manifested that most of the adults had misarticulations, the most common speech sound errors were consonants (zh, ch, sh, z) and the types of errors were distortion and substitution. Compared with the normal consonants acoustic analysis of the disordered ones showed that, the lower boundary frequency got down, spectrum distribution in frequency became widen, as well as the lower frequency components were enhanced. The results suggested that skeletal class III malocclusion may cause deficiency in speech production. The improvement of speech articulation should be considered when the severe skeletal discrepancy was corrected by surgical-orthodontic treatment.