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学科主题: 口腔医学
题名:
High-Intensity Femtosecond Laser Ablation of Human Enamel and Dentin
作者: Sun, Y. C.1,2,3; Chen, H.1,2,3; Vorobyev, A. Y.4; Liu, J.1,2,3; Li, H.1,2,3; Dai, N.5; Wang, Y.1,2,3; Guo, C.4; Lu, P. J.1,2,3
关键词: Laser Ablation ; Pulsed Lasers ; Enamel ; Dentin ; Scanning Electron Microscopy ; Thermal Analysis
刊名: JOURNAL OF MEDICAL IMAGING AND HEALTH INFORMATICS
发表日期: 2014-06-01
DOI: 10.1166/jmihi.2014.1280
卷: 4, 期:3, 页:422-426
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Mathematical & Computational Biology ; Radiology, Nuclear Medicine & Medical Imaging
研究领域[WOS]: Mathematical & Computational Biology ; Radiology, Nuclear Medicine & Medical Imaging
关键词[WOS]: ER-YAG LASER ; PULSED-LASER ; HUMAN TOOTH ; TEMPERATURE ; IRRADIATION ; HEAT
英文摘要:

Human enamel and dentin were ablated with a 66 fs laser at a wavelength of 800 nm and a repetition rate of 1 kHz. With 3D laser scanning microscope, surface roughness at the bottom and sidewalls of the irradiated enamel and dentin cavity was measured to be well below 100,am, which satisfies the clinical needs for tooth preparation. Scanning electron microscopy revealed no microcracks or carbonization on the enamel. However, cracks, carbonization and a small amount of crystalline particles were observed on the dentin. During ablation, intrapulpal temperature rose to a maximum of 12.3 degrees C without cooling and rapidly decreased to 3.0 degrees C above ambient temperature following air cooling. At a laser fluence of 11 J/cm(2) and a scanning velocity of 1 mm/s, the ablation rates of enamel and dentin were measured to be 5.7 x 10(-3) mm3/s and 56.0 x 10(-3) mm(3)/s, respectively. Femtosecond lasers may therefore be useful tools for dental hard tissue ablation.

语种: 英语
所属项目编号: 2012BAI07B00 ; 2013AA040802 ; 81271181 ; NJ20130015
项目资助者: National Science and Technology Pillar Program during the 12th Five-Year Plan ; Scientific Research Innovation Foundation for Youth Doctors of Peking University School of Stomatology ; Scientific Research Staring Foundation for the Returned Overseas Chinese Scholars, Peking University School and Hospital of Stomatology ; National High Technology Research and Development Program ("863" Program) of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
WOS记录号: WOS:000336076100014
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/66599
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Peking Univ, Sch & Hosp Stomatol, Ctr Digital Dent, Beijing, Peoples R China
2.Peking Univ, Natl Engn Lab Digital & Mat Technol Stomatol, Minist Hlth, Beijing, Peoples R China
3.Peking Univ, Res Ctr Engn & Technol Digital Dent, Minist Hlth, Beijing, Peoples R China
4.Univ Rochester, Inst Opt, High Intens Femtosecond Laser Lab, Rochester, NY 14627 USA
5.Nanjing Univ Aeronaut & Astronaut, Inst Mech & Elect Engn, Nanjing 210016, Jiangsu, Peoples R China

Recommended Citation:
Sun, Y. C.,Chen, H.,Vorobyev, A. Y.,et al. High-Intensity Femtosecond Laser Ablation of Human Enamel and Dentin[J]. JOURNAL OF MEDICAL IMAGING AND HEALTH INFORMATICS,2014,4(3):422-426.
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