Cayley A S, Tindall A P, Sampson W J, Butcher A R
Orthodontic Unit, School of Dentistry, University of Adelaide, Australia.
Eur J Orthod. 2000 Oct;22(5):463-74. doi: 10.1093/ejo/22.5.463.
Anterior open bite (AOB) and tongue thrust swallowing are frequently associated, but the relationship between the two remains unclear. Electropalatography (EPG), which is used in speech pathology to measure dynamic tongue function for diagnostic, therapeutic, and research purposes, is a suitable technique for the investigation of this relationship. The present clinical study examined the dentofacial pattern and tongue function in AOB and non-open bite children. EPG recordings of speech and swallowing, and lateral head radiographs were obtained from eight 10-year-old boys with tongue thrust swallowing behaviour and AOB, and from eight age-matched non-open bite controls. Analysis of data from the two groups indicated that although differences were small, the open bite children displayed trends for longer face morphology and greater upper incisor proclination, less consistent production of closures during speech, a more posterior pattern of EPG contact, and relatively sparse EPG contact during swallowing. The discovery of differing patterns of contact for the /d[symbol: see text]/ and /t[symbol: see text]/ phonemes indicates that these should be included when speech is used to test for the presence of fronted tongue behaviour.
前牙开颌（AOB）与吐舌吞咽经常同时出现，但二者之间的关系仍不明确。在言语病理学中，用于测量动态舌功能以进行诊断、治疗和研究的电子腭图描记术（EPG）是研究这种关系的合适技术。本临床研究调查了前牙开颌儿童和非开颌儿童的牙颌面形态及舌功能。对8名有吐舌吞咽行为且前牙开颌的10岁男孩以及8名年龄匹配的非开颌对照儿童进行了言语和吞咽的电子腭图描记记录以及头颅侧位X线片检查。两组数据的分析表明，尽管差异较小，但开颌儿童呈现出面部形态较长、上切牙前倾度较大、言语过程中闭合动作产生的一致性较差、电子腭图接触点位置更靠后以及吞咽时电子腭图接触点相对较少的趋势。/d[符号：见原文]/和/t[符号：见原文]/音素接触模式不同的这一发现表明，在通过言语测试是否存在舌前伸行为时应纳入这些音素。
