1999 Fiscal Year Final Research Report Summary
The Effect of Informed Consent on Pain Threshold and Sympathetic Activity in Gingiva Heat Stimulation
| Project/Area Number |
10671855
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
補綴理工系歯学
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| Research Institution | OSAKA DENTAL UNIVERSITY |
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Principal Investigator |
INOUE hiroshi THE THIRD DEPARTMENT OF PROSTHDONTICS, OSAKA DENTAL UNIVERSITY, PROFESSOR, 歯学部, 教授 (30067053)
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| Co-Investigator(Kenkyū-buntansha) |
DOMAE Naochika DEPARTMENT OF INTERNAL MEDICINE, OSAKA DENTAL UNIVERSITY, PROFESSOR, 歯学部, 教授 (60115889)
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| Project Period (FY) |
1998 – 1999
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| Keywords | INFORMED CONSENT / STRESS / DENTAL TREATMENT / CONTINUOUS BLOOD PRESSURE / FINGERTIP BLOOD FLOW / PAIN THRESHOLD |
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| Research Abstract |
In order to examine the importance of informed consent in dental treatment, two experiments were designed.
Experiment 1. As a basic experiment, continuous blood pressure analysis was performed to examine the change of hemodynamics during gingiva heat stimulation.
Experiment 2. We estimated that the sensitivity to pain was affected by emotional changes such as anxiety and fear during heat stimulation. In order to examine the effects of stress reduction and the sensitivity to pain on experimental informed consent, a psychological test, pain threshold and fingertip blood flow were used as indicators.
Results
Experiment 1. The average of systolic pressure when the probe made contact was higher than that when pain occurred. However, the pressure change was significant when the probe made contact for the first time with the gingiva and in skin thermal stimulation. The pressure difference and the pressure reducing effect of repetition of the same stimulation might have reflected the patient's anticipation anxiety.
Experiment 2. 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. Pain threshold of the n-I.C. group was significantly lower than that of the I.C. group.
3. Fingertip blood flow decreased significantly in both groups when the probe made contact in the first trial.
From our present results, is suggested that informed consent is useful for reducing stress during experimental dental treatment as indicated by sympathetic activity.
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Research Products
(2 results)
