| Project/Area Number |
02557074
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Conservative dentistry
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| Research Institution | Nihon University School of Dentistry |
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Principal Investigator |
ONOSE Hideo Nihon Univ. Sch. of Dent. Professor, 歯学部, 教授 (70059426)
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| Co-Investigator(Kenkyū-buntansha) |
KAMIURA Hideyuki Kantum Electronics Co.Ltd. Engineering Manager, 主任研究員
KUSAKAI Shigenobu GC Corp., Research Dept. Chief Researcher, 製品管理室, 室長
ANDO Susumu Nihon Univ. Sch. of Dent. Assistant Professor, 歯学部, 講師 (40120365)
KURODA Takashi Nihon Univ. Sch. of Dent. Associate Professor, 歯学部, 助教授 (80059790)
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| Project Period (FY) |
1990 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥16,200,000 (Direct Cost: ¥16,200,000)
Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1991: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1990: ¥12,800,000 (Direct Cost: ¥12,800,000)
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| Keywords | Laser Light Unit / Argon Ion Laser / Light Cured Composites / Light Generator / Polymerization / 歯質接着性 / レ-ザ-照射器 / アルゴンイオンレ-ザ- / マルチライン |
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| Research Abstract |
An argon ion laser has some interesting characteristics for light-activating of composite resin filling materials. The laser light is monochromatic and coherent, and it's intensity is stable over a long period of time. Furthermore, there is only few decreasing of light intensity when increasing the distance from a light source. So, the usage of an argon ion laser might provide many clinical advantages, especially in area of the complicated anatomical forms where the light could not be brought into the proximity to the surface of the resin.
The first step in this investigation was accomplished to build up and to improve the argon ion laser unit to be suitable for curing composite resins. Secondary, accomplished experiments were estimated the curing ability compared with the commercially available light activator. It was determined that a significantly greater degree of polymerization was achievable following argon lasing compared to exposure with conventional light activators. And higher bond strengths were obtained with argon lasing in spite of increasing distance from the irradiation surface. In final step in this investigation, the clinical performance of this system was planned in clinics.
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