空嚥下時における下顎の動態について : その2. 空嚥下時および歯牙接触の持続時間

概要

論文の詳細を見る
The sagittal incisal jaw movement during swallowing saliva was measured on 11 subjects (range : 24〜30 years old) with" normal occlusion" by using a two-dimensional system applied infrared sensor. The duration of swallowing saliva and that of tooth contact were calculated with the program developed in our laboratory. The results obtained were as follows : 1. The average of the duration of swallowing saliva (T_1) was approx. 3.5 sec on 11 subjects. 2. The average of the duration of tooth contact during swallowing saliva (T_2) was approx. 2. 1 sec on 11 subjects. Type Ia had the longest T_2 (approx. 2.5sec) among the types of tooth contact. 3. Type Ia had a greater ratio T_2/T_1 (74.4%) than those of the other types. In conclusion, it was clearly shown that the subject of type Ia had a longer duration of tooth contact during swallowing saliva than those of the other types in the absolute and relative values.
日本補綴歯科学会の論文
1990-02-01