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学科主题: 口腔医学
题名:
Controlling Dental Enamel-Cavity Ablation Depth with Optimized Stepping Parameters Along the Focal Plane Normal Using a Three Axis, Numerically Controlled Picosecond Laser
作者: Yuan, Fusong1,2,3; Lv, Peijun1,2,3; Wang, Dangxiao4; Wang, Lei4; Sun, Yuchun1,2,3; Wang, Yong1,2,3
刊名: PHOTOMEDICINE AND LASER SURGERY
发表日期: 2015-02-01
DOI: 10.1089/pho.2014.3840
卷: 33, 期:2, 页:92-97
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Surgery
研究领域[WOS]: Surgery
关键词[WOS]: FEMTOSECOND LASER ; TEETH
英文摘要:

Objective: The purpose of this study was to establish a depth-control method in enamel-cavity ablation by optimizing the timing of the focal-plane-normal stepping and the single-step size of a three axis, numerically controlled picosecond laser. Background data: Although it has been proposed that picosecond lasers may be used to ablate dental hard tissue, the viability of such a depth-control method in enamel-cavity ablation remains uncertain. Methods: Forty-two enamel slices with approximately level surfaces were prepared and subjected to two-dimensional ablation by a picosecond laser. The additive-pulse layer, n, was set to 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70. A three-dimensional microscope was then used to measure the ablation depth, d, to obtain a quantitative function relating n and d. Six enamel slices were then subjected to three dimensional ablation to produce 10 cavities, respectively, with additive-pulse layer and single-step size set to corresponding values. The difference between the theoretical and measured values was calculated for both the cavity depth and the ablation depth of a single step. These were used to determine minimum-difference values for both the additive-pulse layer (n) and single-step size (d). Results: When the additive-pulse layer and the single-step size were set 5 and 45, respectively, the depth error had a minimum of 2.25 mu m, and 450 mu m deep enamel cavities were produced. Conclusions: When performing three-dimensional ablating of enamel with a picosecond laser, adjusting the timing of the focal-plane-normal stepping and the single-step size allows for the control of ablation-depth error to the order of micrometers.

语种: 英语
所属项目编号: 2012BAI07B04 ; 2013AA040802 ; 81271181
项目资助者: National Science &amp ; Technology Pillar Program during the 12th Five-Year Plan ; National High Technology Research and Development Program ("863" Program) of China ; National Natural Science Foundation of China
WOS记录号: WOS:000349532300007
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/58715
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.Beihang Univ, Inst Robot, Beijing 100191, Peoples R China
2.Peking Univ, Sch & Hosp Stomatol, Fac Prosthodont, Ctr Digital Dent, Beijing 100081, Peoples R China
3.Natl Engn Lab Digital & Mat Technol Stomatol, Beijing 100081, Peoples R China
4.Minist Hlth, Res Ctr Engn & Technol Digital Dent, Beijing 100081, Peoples R China

Recommended Citation:
Yuan, Fusong,Lv, Peijun,Wang, Dangxiao,et al. Controlling Dental Enamel-Cavity Ablation Depth with Optimized Stepping Parameters Along the Focal Plane Normal Using a Three Axis, Numerically Controlled Picosecond Laser[J]. PHOTOMEDICINE AND LASER SURGERY,2015,33(2):92-97.
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