| Project/Area Number |
12470429
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Aichi-Gakuin University |
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Principal Investigator |
ITO Yutaka Aichi-Gakuin University, School of dentistry, Department of fixed prosthodontics, professor, 歯学部・歯科補綴学第三講座, 教授 (20139950)
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| Co-Investigator(Kenkyū-buntansha) |
HASHIMOTO Kazuyoshi Aichi-Gakuin University, School of dentistry, Department of fixed prosthodontics, assistant professor, 歯学部・歯科補綴学第三講座, 講師 (90201706)
ARAKI Akizumi Aichi-Gakuin University, School of dentistry, Department of fixed prosthodontics, assistant professor, 歯学部・歯科補綴学第三講座, 助教授 (10201295)
SENDA Akira Aichi-Gakuin University, School of dentistry, Department of fixed prosthodontics, professor, 歯学部・歯科保存学第一講座, 教授 (80097584)
NABETA Nobuo Aichi-Gakuin University, School of dentistry, Department of fixed prosthodontics, assistant professor, 歯学部・歯科補綴学第三講座, 助手 (70308790)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥4,600,000 (Direct Cost: ¥4,600,000)
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| Keywords | dental treatment / treatment posture / stress / fatigue |
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| Research Abstract |
Dental treatment causes dentists to many uncomfortable posture. However it is not clear whether or not, that fixing position of mannequin may cause stress to dentists. The secific aim of this study is to verify the relatdentists' posture and their stress.
Twelve subjects were devided into two group. Control group(Adjustable) was allowed to adjust the position of mannequin during cuting teeth with high-speed rotary cutting instrument. Experimental group(Fixed) was not allowed to adjust the position of mannequin. Urine samples were collected at early morning, before experiment and after experiment. Urine samples were again collected each morning for 2 days to establish control data baseline. Concentrations of creatinine, 17-OHCS, 17-KS-S and catecholamine(adrenaline, noradrenaline) were measured. Creatinine ratios of 17-OHCS, 17-KS-S and catecholamine were calculated. Posture of the subjects who cut teeth with high-speed rotary cutting instrument were taken at angles from both side and back. Experimental and control levels were compared and analyzed statistically using ANOVA about urine and posture.
The result was as follows.
In some measurement angle of posture significant difference was found between control group and experimental group(p<0.001).There was no significant change of creatinine ratio on any of the neuroendocrine hormones (p<0.05). This suggests that fixing position of mannequin may cause difference of posture but fixing position of mannequin may not cause stress to dentists.
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