Oronasal fistulas, intraoral air pressure, and nasal air flow during speech.
Oronasal fistulas, intraoral air pressure, and nasal air flow during speech.
复制标题
说话时的口鼻瘘、口内气压和鼻气流。
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
J. Blank
中科院分区：
文献类型：
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作者：
R. Shelton;J. Blank
本文介绍了6例口鼻瘘和1例上颌裂患者的空气力学数据。研究人员用丙烯酸牙科矫治器、牙蜡或义齿粘合剂对患者的缺陷进行了研究，使其打开，然后再次关闭。只有最大的开口似乎允许足够的口腔内气压损失，以削弱阻塞辅音。除了最小的缺陷外，所有的缺陷都与音节串期间的鼻气流动有关。因此，这些数据与一个假设是一致的，即在存在小的空气泄漏的情况下，患者保持足够的口腔内气压以产生准确的辅音。据推测，这是通过增加呼吸努力实现的。瘘管大小与语音或语音相关变量之间的关系似乎类似于腭咽闭合面积与语音之间的关系。然而，与病理性的腭咽闭合机制相比，瘘管在发音过程中的面积更恒定。
Aeromechanical data are presented for six patients with oronasal fistulas and one with a maxillary cleft. Patients were studied with the defects open and again with them closed with either acrylic dental appliances, dental wax, or denture adhesive. Only the largest openings appeared to allow sufficient loss of intraoral air pressure to weaken obstruent consonants. All but the smallest of the defects were associated with nasal air flow during syllable strings. Thus the data are compatible with a hypothesis that in the presence of small air leaks patients maintain sufficient intraoral air pressure for accurate consonant production. Presumably this is achieved by increase in respiratory effort. The relationship between fistula size and speech or speech related variables appears to be similar to that between area of the velopharyngeal opening and speech. However, the fistula is more constant in area across utterances than is the pathological velopharyngeal mechanism.