Abstract
We investigated the change of salivary Immunoglobulin A (IgA) secration rates at high-stress examination period and low-stress period. The whole unstimulated saliva during 5 minutes were obtained from 28 dental hygienist students. We recorded the weight of saliva and then assayed the IgA by using radial immunodiffusion test.
The results were as following;
1. There were no significant differences in the average IgA secration rates, theaverage salivary weight, and the total IgA in a 5-min. period between high-stress and low-stress periods.
2. The individual IgA secration rates of high-stress period were significantly correlated with those of low-stress period.
3. The relationship between the egogram and the change of IgA secration rate at highstress period and low-stress period were analyzed by means of multiple regression analysis. There was a positive correlation between NP points and the change of IgA, and a negative correlation between FC points and the change of IgA, and the multiple correlation coefficient was significant.
4. It was suggested that individual personalities might have affected the changeof IgA secration rate at high-stress period.
