2019 Fiscal Year Final Research Report
Technical innovation for Er: YAG laser-formed cavity
| Project/Area Number |
16K20464
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Conservative dentistry
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| Research Institution | Tokyo Dental College |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Keywords | Er:YAGレーザー / 接着強さ / コンポジットレジン |
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| Outline of Final Research Achievements |
Microtensile bond strength to the enamel surface irradiated with Er:YAG laser was significantly lower in the two-step self-etch adhesive than in the non-irradiated one, but was significantly higher than that in the one-step self-etch adhesive when irradiated. Although the bond strength to the dentin surface irradiated with Er:YAG laser was almost the same as that of the non-irradiated surface, the two-step self-etch adhesive was significantly higher than the one-step self-etch adhesive. It was not effective to the phosphoric acid pretreatment before applying the one-step self-etch adhesive.
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| Free Research Field |
保存修復学
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| Academic Significance and Societal Importance of the Research Achievements |
歯科治療のあらゆる領域でレーザーが活用されているが，レーザー照射被着歯面への接着性の不安定さゆえに，硬組織切削でのレーザー使用は普及しているとはいいがたい．
本研究において，レーザー照射エナメル質・象牙質に対して，以前の研究と異なる結果となった．接着システムは日々材料の進歩があり，必ずしも接着システムの種類で選択するとも言い難い．接着の解明をするために，今後も研究が必要と思われる．
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