Study on Irradiation of Wavelength-modified CO2 Laser for Tissue Engineering-Cutting Efficiency of Human Dentin-
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- YOSHIKAWA Kazushi
- Department of Operative Dentistry, Osaka Dental University
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- IKEO Takashi
- Department of Biochemistry, Osaka Dental University
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- AWAZU Kunio
- Medical Beam Physics Lab., Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University
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- INOUE Masayoshi
- Department of Operative Dentistry, Osaka Dental University
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- YAMAMOTO Kazuyo
- Department of Operative Dentistry, Osaka Dental University
書誌事項
- タイトル別名
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- - Cutting Efficiency of Human Dentin -
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抄録
In this study, the wavelength of a CO2 laser was modified to 9.45µn;m (Modi-CO2 laser) and the cutting efficiency of Modi-CO2 laser was evaluated. We used the freshly extracted human molars without carious regions. The dentin surface of the thawed teeth was polishing with alumina (0.05 mm). Modi-CO2 laser was irradiated by TEA-CO2 laser. Modi-CO2 laser was irradiated on the polished dentin surface under the irradiation conditions of 1 MW/pulse and 1, 5, 10 and 50 pulses. The pulse width of one pulse was set to 100 ns. The Modi-CO2 laser-irradiated dentin surfaces were Au-spattered and were observed by an electron surface roughness analyzer. The volume lost by the irradiation of the laser was calculated from the diameter and the depth of cavity. The relationship between the lost volume and the irradiation energy was statistically analyzed by one-way ANOVA and Scheffe's test (p<0.05). No measurable loss of dentin was detected with Modi-CO2 laser-irradiation of 1 and 5 pulses. The lost volumes of dentin with 10 and 50 pulses were 143333 and 342333 mm3. The lost volume by the irradiation of Modi-CO2 laser significantly increased with an increase of the pulse of Modi-CO2 laser.
収録刊行物
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- Journal of Oral Tissue Engineering
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Journal of Oral Tissue Engineering 3 (2), 80-86, 2005
日本再生歯科医学会
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詳細情報 詳細情報について
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- CRID
- 1390001205226262528
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- NII論文ID
- 110006263678
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- NII書誌ID
- AA1195240X
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- ISSN
- 18800823
- 13489623
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可