Howell P G
J Prosthet Dent. 1986 Jul;56(1):93-9. doi: 10.1016/0022-3913(86)90289-1.
The dimensions of movement of the mandible during the reading of a standard passage of text have been measured and enable a speech envelope to be described. The relationship between closest speaking space and the vertical overlap of the incisor teeth shows that there is a trend in this direction, but it is not as definitive a correlation as has been previously assumed. The relationship between the anterior speaking space and the horizontal overlap of the incisor teeth shows a similar trend but with a much reduced correlation. There was often a small space of approximately 0.2 mm between the mandibular incisor teeth and the palatal aspects of the maxillary incisor teeth that, although a common finding in this study, was by no means a constant feature for all subjects.
在阅读标准文本段落期间，对下颌运动的维度进行了测量，并由此描绘出言语包络。最接近的说话空间与切牙垂直重叠之间的关系表明存在这样一种趋势，但这种相关性并不像之前所假设的那样明确。前位说话空间与切牙水平重叠之间的关系呈现出类似趋势，但相关性大大降低。下颌切牙与上颌切牙腭侧之间通常存在约0.2毫米的小间隙，尽管这在本研究中是常见发现，但绝不是所有受试者的恒定特征。
