Shelton R L, Blank J L
Cleft Palate J. 1984 Apr;21(2):91-9.
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.
本文呈现了6例口鼻瘘患者和1例上颌裂患者的空气动力学数据。对患者进行了研究，先是在缺损开放的情况下，然后再用丙烯酸牙科器械、牙蜡或义齿粘合剂封闭缺损后进行研究。似乎只有最大的开口才会导致足够的口腔内气压损失，从而削弱塞音。除了最小的缺损外，所有缺损在音节串发过程中都伴有鼻气流。因此，这些数据与以下假设相符：在存在小漏气的情况下，患者能够维持足够的口腔内气压以准确发出辅音。据推测，这是通过增加呼吸努力来实现的。瘘管大小与言语或言语相关变量之间的关系似乎与腭咽开口面积与言语之间的关系相似。然而，瘘管在不同话语中的面积比病理性腭咽机制更恒定。
