| Project/Area Number |
11671917
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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 |
Conservative dentistry
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| Research Institution | Fukuoka Dental College |
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Principal Investigator |
TAMURA Naoharu Fukuoka Dental College, Dental, Associated Prof., 歯学部, 助教授 (30113129)
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| Project Period (FY) |
1999 – 2001
|
| Project Status |
Completed (Fiscal Year 2001)
|
| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2001: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
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| Keywords | tunnel cavity / marginal leakage / cavity preparation / filling method / ultra sonic cutting / incremental filling / 保存実習 / 模型実習 / メルコックス・ローダミン法 / 積層充填 / Er:YAGレーザー |
|---|
| Research Abstract |
Marginal leakage of Tunnnel cavity preparation and filling method were studied. In cavity preparation, Ultra sonic scaler was improved and used to remove soft dentin located at difficult places for treatment. Attached to the scaler, spoon exca types and #2 round burs were tested and #2 round bur was found to be easier to use. In filling method, marginal leakage of incremental filling methods were excellent than that of bulk methods, and the results of incremental methods of grass ionomer cement and composite resin were as good as those of incremental methods of composite resins but were more stable. When this tunnnel cavity was prepared in the laboratory class for the 4th graders, two out of 98 students had marginal ridge defect. As being demonstrated, the tunnel cavity is safe cavity preparation, with minimal intervention, so that it should bemore widely used in clinic.
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