Fundamental and Clinical Studies on the Effect of Lasers Against Dental Hard Tissues

激光对牙齿硬组织作用的基础和临床研究

• 批准号: 01304048
• 负责人: MORIOKA Toshio
• 金额: $ 3.9万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01304048/
• 关键词: Laser; Incipient Caries; Acid Resistance; Enamel; Fluoride; Hyper Sensitive Dentine; Pain Relieve; Secondary Dentine; 歯髓内酵素; 低エネルギ-・レ-ザ-; エナメル質耐酸性; 歯髄の石灰化; 初期齲蝕の進行抑制

1. Combined effect of laser and fluoride on incipient dental cariesArtificial caries lesions were made on the buccal surface of human premolars, and the enamel was then treated with laser and fluoride. The acid resistance of the enamel was examined by demineralization in acidic solutions. An increase in acid resistance and fluoride uptake was caused by floride treatment after Nd-YAG laser irradiation. Specimens of human enamel were topically applied with solutions of acidulated phosphate fluoride. In addition, remarkable remineralization of artificial caries lesions was seen in these specimens after exposure to calcifying fluid.2. Effect of laser on relieving pain of hyper sensitive dentineSixty patients with cervical hyper sensitive dentine were irradiated with 60 mW of diode laser for relieving pain. An analjesic effect was observed in all the cases, especially in the case of grade 1 and 2. The effect was less sensitive in the case of grade 3.Similar results were obtained by using He-Ne laser with 10 mW. These results indicate that the low power lasers are useful for treatment of patients with hyper sensitive dentine.3. Effect of laser on activation of enzymes in dental pulpStimulation of secondary dentine formation was observed by Nd-YAG laser irradiation. This phenomenon is due to the activation alkaline phosphatase. The pulpal chamber was almost completely filled with sencondary dentine 4 weeks after CO_2 laser irradiation.

1.激光和氟化物对初期龋齿的联合作用在人前磨牙的颊面制作人工龋病灶，然后用激光和氟化物处理牙釉质。通过在酸性溶液中脱矿质来检查牙釉质的耐酸性。 Nd-YAG 激光照射后氟化处理导致耐酸性和氟化物吸收的增加。人类牙釉质样本局部涂有酸化磷酸氟化物溶液。此外，在暴露于钙化液后，这些标本中还观察到人工龋病灶的显着再矿化。2．激光缓解牙本质过敏疼痛的效果对60例颈椎牙本质过敏患者进行60 mW二极管激光照射缓解疼痛。在所有病例中均观察到镇痛作用，特别是在1级和2级的情况下。在3级的情况下，该作用不太敏感。使用10 mW的氦氖激光也获得了类似的结果。这些结果表明低功率激光对于牙本质过敏患者的治疗是有用的。 3．激光对牙髓酶活化的影响通过Nd-YAG激光照射观察对次生牙本质形成的刺激。这种现象是由于碱性磷酸酶的激活所致。 CO_2激光照射后4周，牙髓腔几乎完全被次级牙本质充满。

项目成果

Mamoru Kumazaki: "Clinical Effects of Semi-conductor Laser on Hypersensitive Dentine" The Japanese Journal of Conservative Dentistry. 33. 911-918 (1990)

Mamoru Kumazaki：“半导体激光对过敏牙本质的临床效果”日本保守牙科杂志。

Mitso Maeda: "Laser Induced Fluorsence Detection of Sodium Atomized by a Microwave Induced Plasma" Analytical Chemistry. 62. 680-683 (1990)

Mitso Maeda：“微波诱导等离子体雾化钠的激光诱导荧光检测”分析化学。

Mitsuo Maeda: "LaserーInducedーFluoresence Detection of Sodium Atomized by a MicrowaveーInduced Plasma" Analytical Chemistry. 62. 680-683 (1990)

Mitsuo Maeda：“微波诱导等离子体雾化钠的激光诱导荧光检测”分析化学 62. 680-683 (1990)

前田 三男: "分光分折用メンテナンスフリ-TEA室素レ-ザ-" レ-ザ-研究. 18. 79-83 (1990)

Mitsuo Maeda：“用于光谱分析的免维护 TEA 室激光器”Laser Research 18. 79-83 (1990)。

熊崎 護: "象牙質知覚過敏症に対する半導体レ-ザ-の治療効果" 日本歯科保存学会雑誌. 33. 911-918 (1990)

Mamoru Kumazaki：“半导体激光对牙本质过敏的治疗效果”日本保守牙科学会杂志 33. 911-918 (1990)。