The Fluoridization Photochemical Reaction on Excimer Laser Irradiation of Enamel

准分子激光照射牙釉质的氟化光化学反应

• 批准号: 06672065
• 负责人: MIYAZAWA Chyuzo
• 金额: $ 1.22万
• 依托单位: Ohu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06672065/
• 关键词: Enamel; F^-concentration; Fluoridization; Photochemical reaction; Excimer laser beam irradiation; F-濃度; フッ素イオン取り込み

The effects of excimer laser beam irradiation on enamel were studied. A peak profile (2rheta : 49-54ﾟ) of micro-X-ray diffraction observed involving line profile when acting a single 2%-NaF solution, and when acting a 2%-NaF and irradiation 70mJ/cm^2. The former showed a peak at only the 213 area (This would be due to weak X-ray power), and in the latter, a marked peak was present at the 004 area.The acid resistance test were individually acted a single 2%-NaF group, and an irradiation 70mJ/cm^2 combination group. There were significant differences between the single 2%-NaF group and the combination group. These results mean a higher acid resistance due to the laser beam.There was F^- uptake after acting the 2%-NaF group and washing out with 1M-KOH,but more remarkable F^- uptake into crystal of the enamel surface due to the combination group. As a result, a photochemical reaction of laser in the ultraviolet zone would be induced. We observed low eluted Ca in irradiations 70mJ/cm^2 (12.2% and 22.7%) groups, compared with the single group, with an especially higher acid resistance in irradiations 70mJ/cm^2. By SEM,the availability of irradiations 70mJ/cm^2 was substantiated.

本文研究了准分子激光照射牙釉质的效果。在2%-NaF溶液中以及在70 mJ/cm ^2辐照下，微区X射线衍射峰形（2 reta：49-54 nm）均为线形。前者仅在213区有一个峰（这可能是由于X射线功率较弱），而后者在004区有一个明显的峰。单用2%-NaF组与联合组比较有显著性差异。2%-NaF组作用于牙釉质表面后，经1 M-KOH冲洗后，牙釉质表面仍有F^-吸收，但联合组牙釉质表面F^-吸收更明显。其结果是，在紫外区的激光光化学反应将被诱导。我们观察到70 mJ/cm ^2辐照组的钙溶出量较低（12.2%和22.7%），与单组相比，70 mJ/cm ^2辐照组的耐酸性特别高。通过扫描电镜观察，证实了70 mJ/cm ^2辐照的可行性。

项目成果

宮澤忠蔵 他: "フッ化物のエナメル質作用時におけるエキシマレーザー光照射の影響について" 日本口腔衛生学会雑誌. 45. 592-593 (1995)

Chuzo Miyazawa 等人：“准分子激光照射对牙釉质上氟化物作用的影响”日本口腔卫生学会杂志 45. 592-593 (1995)。

C.Miyazawa: "The Effect of Excimer Laser Beams Irradiation of Fluoride Ion Uptake of Tooth Enamel" ANNUAL REPORT OF THE OSAKA LABORATORY FOR RADIATION CHEMISTRY JAPAN ATOMIC ENERGY RESEARCH INSTITUTE. 27. 24-27 (1995)

C.Miyazawa：“准分子激光束照射对牙釉质氟化物离子吸收的影响”日本原子能研究所大阪辐射化学实验室的年度报告。

C.Miyazawa: "The Effect of Excimer Laser Beams Irradiation on Fluoride Ion Uptake of Tooth Enamel" ANNUAL REPORT OF THE OSAKA LABORATORY FOR RADIATION CHEMISTRY JAPAN ATOMIC ENERGY RESEARCH INSTITUTE. 27. (1995)

C.Miyazawa：“准分子激光束照射对牙釉质氟化物离子吸收的影响”日本原子能研究所大阪辐射化学实验室年度报告。

C.Miyazawa: "The Effects of Excimer Laser Beam Irradiation on F^- Uptake of Enamel" ANNUAL REPORT OF THE OSAKA LABORATORY FOR RADIATION CHEMISTRY JAPAN ATOMIC ENERGY RESEARCH INSTITUTE. 29(in print). (1996)

C.Miyazawa：“准分子激光束照射对 F^- 牙釉质吸收的影响”日本原子能研究所大阪辐射化学实验室的年度报告。

C.Miyazawa: "Qualitative Changes in the Enamel by Excimer Laser Beams Irradiation : Comparison between Deciduous and Permanent Teeth" ANNUAL REPORT OF THE OSAKA LABORATORY FOR RADIATION CHEMISTRY JAPAN ATOMIC ENERGY RESEARCH INSTITUTE. 26. 22-24 (1994)

C.Miyazawa：“准分子激光束照射对牙釉质的质变：乳牙和恒牙之间的比较”日本原子能研究所大阪辐射化学实验室的年度报告。