| Project/Area Number |
13672183
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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 |
Periodontal dentistry
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
AOKI Akira Tokyo Medical and Dental University, Graduate School, Research Associate, 大学院・医歯学総合研究科, 助手 (30302889)
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| Co-Investigator(Kenkyū-buntansha) |
KINOSHITA Atsuhiro Tokyo Medical and Dental University, Graduate School, Research Associate, 大学院・医歯学総合研究科, 助手 (10242207)
ODA Shigeru Tokyo Medical and Dental University, Graduate School, Lecturer, 大学院・医歯学総合研究科, 講師 (70160869)
WATANABE Hisashi Tokyo Medical and Dental University, Graduate School, Associate Professor, 大学院・医歯学総合研究科, 助教授 (40143606)
ICHINOSE Shizuko Tokyo Medical and Dental University, Instrumental Analysis Center, Research Associate, 機器分析センター, 助手 (60014156)
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| Project Period (FY) |
2001 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | Er: YAG laser / cementum / dentin / alveolar bone / periodontal tissue / gingival pigmentation / periodontitis / periodontal flap / surgery / Er : Y AG レーザー / 歯肉 / メラニン / 根面処理 |
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| Research Abstract |
1) Histological study on wound healing after Er: YAG laser irradiation on the root dentin in Beagle dogs: Er: YAG laser irradiation did not negatively affect periodontal tissue attachment on dentin. Additional acid or mechanical treatment after laser treatment showed better healing than laser treatment alone.
2) Histological study on wound healing after Er: YAG laser bone ablation in rats: The bone defect prepared with the Er: YAG laser showed better wound healing at an early stage, compared to that with the mechanical bur.
3) Histological study on wound healing after Er: YAG laser debridement of the diseased connective tissue and root surface during periodontal flap surgery in Beagle dogs: The debridement with the Er: YAG laser was performed effectively and safely, and the wound healing was much the same as the mechanical treatment. The histological investigation is in progress.
4) Clinical application of the Er: YAG laser for removal of gingival melanin or tattoo pigmentation: The ablation of the pigmented gingival tissue was easily achieved without major. thermal damage such as coagulation or carbonization. The use of water spray provided a clear operation field and microscopic monitoring during laser irradiation was of great advantage for complete remoal of pigmentation. The results suggest that the removal of gingival pigmentation can be performed safely and effectively by Er: YAG laser irradiation.
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