Studies on the treatment of enamel lesion by the remineralization using by laser

Research Project

Project/Area Number	14370705
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Research Field	矯正・小児・社会系歯学
Research Institution	Fukuoka Dental College
Principal Investigator	MOTOKAWA Wataru Fukuoka Dental College, 歯学部, 教授 (60084290)
Co-Investigator(Kenkyū-buntansha)	MIYAZAKI Koji Fukuoka Dental College, 歯学部, 教授 (40050041) KUBOYAMA Hiroko Fukuoka Dental College, 歯学部, 講師 (10258593) BABA Atsuko Fukuoka Dental College, 歯学部, 助手 (50271440) 石田万喜子福岡歯科大学, 歯学部, 助手 (10289572)
Project Period (FY)	2002 – 2004
Project Status	Completed (Fiscal Year 2004)
Budget Amount *help	¥8,500,000 (Direct Cost: ¥8,500,000) Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000) Fiscal Year 2003: ¥6,100,000 (Direct Cost: ¥6,100,000) Fiscal Year 2002: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords	Remineralization / Surface lesion of enamel / Nd:YAG laser / Acid phosphate fluoride / uantitative Light-induced Fluorescence / Minimal intervention / 白斑 / フッ素 / リチャージ / レーザー
Research Abstract	This study is to examined the reproducibility of Quantitative Light-induced Fluorescence to quantify an average fluorescence loss (ΔF), lesion area (ΔA) and mineral loss (ΔQ) in an artificial surface lesion on permanent teeth and to investigate the ΔF, ΔA and ΔQ of each tooth with and without Nd: YAG laser irradiation after acid phosphate fluoride (APF) application during immersion into a remineralization solution for 10 days. The coefficients of variance of standard deviation (ΔF, ΔA and ΔQ) for 10 indicated that were relatively small, 3.2%, 1.9% and 2.8% respectively, and the results good reproducibility was obtained. When the teeth treated with APF sol. were soaked in the remineralization solution for 10 days, it was observed that remineralization of the lesion in the enamel surface was advancing slowly. In the case of Nd: YAG laser irradiation after APF application, gradually remineralization proceeded from 2^<nd> day starting for 10 days after rapid demineralization occurred within the initial 2 days.