2012 Fiscal Year Final Research Report
Application to the dental treatment of free electron laser
| Project/Area Number |
22592127
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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 | Nihon University |
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Principal Investigator |
IKEMI Takuji 日本大学, 松戸歯学部, 教授 (80102565)
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| Research Collaborator |
NEMOTO Shogo 日本大学, 大学院・松戸歯学研究科保存修復学専攻, 大学院生
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| Project Period (FY) |
2010 – 2012
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| Keywords | 歯学 / 高性能レーザー / 応用工学 / 量子光工学 |
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| Research Abstract |
The present study focused on the effect of ultrashort pulses emitted by a FEL, and a high-speed camera was used to observe the aspects of bovine dentin transpiration using the FEL tuned to the same wavelength as Er:YAG laser (2.94μm). The ejected transpiration particles were also observed by a scanning electron microscope (SEM) and the depth of transpiration was compared with that obtained by an Er:YAG laser. Additionally, irradiation was performed on bovine dentin with varying FEL irradiation wavelengths of 2.50, 2.94, 3.50, and 4.00μm, the depth of transpiration was measured, and increases in temperature at the irradiated site (irradiated side) and the opposite side of the sample directly under the irradiated site (dental pulp side) were also measured by a radiation thermometer. The results showed that dentin could be ablated effectively by using a laset, having a pulse width shorter than the thermal relaxation time and an approximate wavelength of 2.94μm.
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Research Products
(4 results)
