実験的歯科処置に対するインフォームドコンセントのストレス緩和効果

抄録

To clarify stress reducing effect of informed consent on experimental dental treatment, psychological test, pain threshold, hemodynamics and plasma catecholamine were used as indication of stress during heat stimulation to the gingiva, impression taking and infiltration anesthesia. The subjects were divided into two groups, one group was informed about the procedure in detail before the experiment (I.C. group), while the other group was not informed at all (n-I.C. group).
1.In the n-I.C. group, state anxiety before the experiment increased significantly compared with that in the normal resting stage.
2.In the experiment of heatstimulation, fingertip blood flow decreased significantly in both groups when the probe made contact in the first trial, and that in the n-I.C. group showed a significant decrease compared with that in the I.C. group in the second trial.
3.During taking impression, systolic blood pressure in the I.C. group decreasedsignificantly 15 minutes after taking impression compared with that in the resting condition, and showed a significant difference between the two groups.
4.During infiltration anesthesia fingertip blood flow decreased significantly in the n-I.C. group. The present data suggested that informed consent is useful for reducing stress during experimental dental treatment as indicated by the sympathetic activity.