Sheppard I M, Sheppard S M
J Prosthet Dent. 1977 Sep;38(3):249-53. doi: 10.1016/0022-3913(77)90300-6.
A number of subjects were studied cineflourographically during swallowing, and their vertical dimensions of occlusion were clinically evaluated. The subjects who had reduced vertical dimensions of occlusion were older than those with normal vertical dimensions, their dentures were older, their total years with complete dentures were more, and the tendency to swallow without opposing tooth contact was greater. The cumulative evidence indicates that such aberrant muscle activity might contribute to the regressive changes found in complete denture wearers.
对一些受试者在吞咽过程中进行了电影荧光造影研究，并对他们的垂直咬合距离进行了临床评估。垂直咬合距离减小的受试者比垂直咬合距离正常的受试者年龄更大，他们的假牙使用时间更长，佩戴全口假牙的总年数更多，并且在吞咽时无对颌牙接触的倾向更大。累积证据表明，这种异常的肌肉活动可能导致全口假牙佩戴者出现退行性变化。
