Horn H, Göz G, Bacher M, Müllauer M, Kretschmer I, Axmann-Krcmar D
Department of Orthodontics, University of Tübingen, Germany.
Eur J Orthod. 1997 Dec;19(6):647-55. doi: 10.1093/ejo/19.6.647.
For the development of malocclusions and speech disorders, major aetiological significance is attributed to orofacial malfunctions, especially of the tongue. The position of the tongue to the alveolar arch and teeth, particularly within the area of the tip of the tongue, is of special interest for orthodontists. Electromagnetic articulography is a new technique used to examine tongue function and to record its movement in the midsagittal plane. The aim of the study was to determine whether this procedure offers suitable and reliable results. Thirty-one subjects aged 14.3-37.3 years had to repeat speaking sequences five times. The German syllables they had to repeat were /asa/, /ascha/, /ata/, /ala/, /ana/, /aka/. The tongue movements were registered with an 'Articulograph AG 100'. Distances, angles and encircled planes were evaluated, and the proportion of intra-individual to overall variability was calculated in order to check the reliability of the courses of movement. Angles and distances especially showed, depending on the position of the receiver coils, strong reliability during speaking sequences, whereas area produced unfavourable results. The analysis of long trajectories and angles appeared favourable in order to describe the courses of movement. This required, however, a systematic assessment of functional movement with electromagnetic articulography.
对于错牙合畸形和言语障碍的发展，口面部功能障碍，尤其是舌头的功能障碍具有主要的病因学意义。舌头相对于牙槽弓和牙齿的位置，特别是在舌尖区域，是正畸医生特别感兴趣的。电磁关节造影术是一种用于检查舌头功能并记录其在矢状面内运动的新技术。本研究的目的是确定该方法是否能提供合适且可靠的结果。31名年龄在14.3至37.3岁之间的受试者必须重复五次说话序列。他们必须重复的德语音节是/asa/、/ascha/、/ata/、/ala/、/ana/、/aka/。舌头运动通过“关节造影仪AG 100”进行记录。评估距离、角度和环绕平面，并计算个体内部变异与总体变异的比例，以检查运动轨迹的可靠性。角度和距离尤其显示，根据接收线圈的位置，在说话序列期间具有很强的可靠性，而面积产生的结果不理想。为了描述运动轨迹，对长轨迹和角度的分析似乎是有利的。然而，这需要用电磁关节造影术对功能运动进行系统评估。
