Recalcification of Enamel Due to Laser Ablation
激光烧蚀导致牙釉质再钙化
基本信息
- 批准号:10671949
- 负责人:
- 金额:$ 1.54万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
TCP slurry was extracted from tertiary calcium phosphate (TCP) of submicron particles, by which TCP sheets (dozens of μm in thickness) were made. The decalified enamel tip coated with slurry and sheets were irradiated by excimer laser, Q switch YAG laser and CO_2 Laser, respectively. We studied the effect of laser ablation on recalcification of enamel.According to the conventional method, we made specimens as follows ; an extracted permanent tooth that approximately 200 μm of the surface was removed was polished, which was decalcified for 4 hours into a 0.1 M-lactic acid buffer solution (0.3 mM -HAp, pH 4.5). Two enamel specimen of the same tooth were employed. One specimen was irradiated on slurry or sheets (2 reacted groups), and the other one was then treated by single slurry and sheets without irradiation (control group). Some specimens were immersed with artificial saliva for 4 weeks, whose recalcification was observed. In making slurry, TCP (a mean granular diameter of 0.41 μm) w … More as prepared to 10-20% with purified water. In making sheets, 10% TCP slurry, agar powder and potato starch mixed with purified water was heated at 85℃, and dissolved. An adequate amount of the solution was then poured into a plastic schale (30-60 μm in thickness), was then left, dried and cut to approximately 5 mm square. As adhesive agents for TCP sheets, 5% CMC, a 0.3 mM-HAp solution and 75% HAp slurry were employed. Each condition of irradiation ; 248 nm (KrF) of excimer laser, 355 nm (the 3rd harmonic generation of basic wavelength 1,064 nm) of Q switch YAG laser and 10,600 nm of CO_2 laser at 2000 shots of 70-150 mJ/cm^2 and 0.8-1.0 W/lsec were irradiated.Laser ablation occurred on slurry or sheets of enamel tip at 70-100 mJ/cm^2 of excimer laser/YAG laser and 0.8 W/lsec of CO_2 laser. The adherent effect of TCP in slurry or sheets for decalcified enamel surface was more strongly enhanced by laser ablation. In CO_2 laser irradiation, laser ablation plume was formed on slurry and sheets.Recalcification of adherent slurry and sheets was also more advanced by artificial saliva. Less
从亚微米级磷酸三钙(TCP)中提取TCP浆料,制备出几十μm厚的TCP片材。分别用准分子激光、调Q YAG激光和CO_2激光对脱钙牙釉质尖进行光固化处理。我们研究了激光烧蚀对牙釉质钙化的影响。按照常规方法,我们制作了如下样品:将一颗拔除的恒牙去除约200 μm的表面,将其抛光,将其在0.1 M-乳酸缓冲溶液(0.3 mM -HAp,pH 4.5)中脱钙4小时。两个牙釉质标本的同一牙齿。其中一个样品在浆料或片材上进行辐照(2个反应组),另一个样品在浆料和片材上进行单独辐照(对照组)。部分标本用人工唾液浸泡4周,观察其钙化情况。在制浆过程中,TCP(平均粒径为0.41 μm) ...更多信息 用纯化水稀释至10-20%。将10%磷酸三钙浆液、琼脂粉、马铃薯淀粉与纯净水混合,在85℃下加热溶解。然后将适量的溶液倒入塑料膜(厚度为30-60 μm)中,然后放置,干燥并切成约5 mm见方。作为TCP片材的粘合剂,使用5%CMC、0. 3 mM-HAp溶液和75%HAp浆料。各种辐照条件; 248 nm(KrF)准分子激光,355 nm(基本波长1, 064 nm的三次谐波产生)和10,用波长600 nm的CO_2激光,以70-150 mJ/cm ~ 2、0.8-1.0 W/lsec的能量,照射2000次,在70-100 mJ/cm ~ 2的能量范围内,激光烧蚀牙釉质表面准分子激光/YAG激光,0.8W/lsec。激光烧蚀能更有效地提高TCP在脱钙牙釉质表面的粘附效果。在CO_2激光照射下,浆料和板材表面形成激光烧蚀羽流,人工唾液也能促进浆料和板材的再钙化。少
项目成果
期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
大橋明石,宮澤忠蔵 他5名: "エナメル質の再石灰化に及ぼすTCPスラリーとレーザー光照射の影響."口腔衛生会誌. 49. 416-417 (1999)
Akashi Ohashi、Chuzo Miyazawa 和其他 5 人:“TCP 浆料和激光照射对牙釉质再矿化的影响。”口腔卫生学会杂志 49. 416-417 (1999)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
"Remineralization of the Enamel by Laser Abrasion and TCP Sheets"J Dent Res. 79 (5) (in print). (2000)
“激光磨损和 TCP 片材对牙釉质的再矿化”J Dent Res。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
大橋明石、宮澤忠蔵 他 5名: "エナメル質の再石灰化に及ぼすTCPスラリ-とレ-ザ-光照射の影響"口腔衛生会誌. 49. 416-417 (1999)
Akashi Ohashi、Chuzo Miyazawa 等 5 人:“TCP 浆料和激光照射对牙釉质再矿化的影响”口腔卫生学会杂志 49. 416-417 (1999)。
- DOI:
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- 影响因子:0
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MIYAZAWA Chyuzo其他文献
MIYAZAWA Chyuzo的其他文献
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{{ truncateString('MIYAZAWA Chyuzo', 18)}}的其他基金
Concentration for Double Acting of F^- to Fluorine Photochemical Reaction
F^-双作用制氟光化学反应的浓度
- 批准号:
08672383 - 财政年份:1996
- 资助金额:
$ 1.54万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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 - 财政年份:1994
- 资助金额:
$ 1.54万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
The CO_3^<2-> Variation of Enamel Crystals on Uptake of F^-Ion
牙釉质晶体吸收F^-离子时CO_3^<2->的变化
- 批准号:
02670928 - 财政年份:1990
- 资助金额:
$ 1.54万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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