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学科主题: 口腔医学
题名:
Effects of Yb:KYW thin-disk femtosecond laser ablation on enamel surface roughness
作者: Liu, Jing; Sun, Yuchun; Wang, Yong; Lu, Peijun1
关键词: Femtosecond laser ; Enamel ; Surface roughness
刊名: OPTICS AND LASER TECHNOLOGY
发表日期: 2014-07-01
DOI: 10.1016/j.optlastec.2013.12.004
卷: 59, 页:7-10
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Optics ; Physics, Applied
研究领域[WOS]: Optics ; Physics
关键词[WOS]: TOOTH PREPARATION ; ROTARY INSTRUMENTS ; DENTIN WETTABILITY ; RETENTION ; RESTORATIONS ; CEMENT ; CROWNS ; ACID ; BURS
英文摘要:

This study aimed to quantitatively evaluate the surface roughness of enamel following ablation with a Yb:KYW thin-disk femtosecond pulsed laser at different fluences (F), scanning speeds and scanning line spacings. Thirty human extracted teeth were sectioned into crowns and roots along the cementum enamel junction, and then the crowns were cut longitudinally into sheets about 1.5 mm thick. The samples were randomly divided into ten groups (n=3). Samples of groups 1-8 were irradiated with a femtosecond pulsed laser. These enamel samples were fixed on a stage at focus plane, and a laser beam irradiated onto the samples through a galvanometric scanning system, with which rectangular movement could be achieved. Samples of groups 9 and 10 were prepared with grinding instruments. Following ablation and preparation, the samples were examined for surface roughness with a three-dimensional laser profile measurement microscope. The results showed that scanning speed and scanning line spacing had little influence on the surface roughness of femtosecond pulsed laserablated enamel, except when F=4 J/cm(2). When a lower fluence was used, the enamel surface roughness was higher, and vice versa. This study showed that various laser fluences, scanning speeds and scanning line spacings can affect and alter enamel surface roughness. Therefore, adequate parameters should be chosen to achieve the proper therapeutic benefits. (C) 2013 Elsevier Ltd. All rights reserved.

语种: 英语
所属项目编号: 2012BAI07B04 ; xxhz201301
项目资助者: National Science &amp ; Technology Pillar Program ; Beijing Nova Program
WOS记录号: WOS:000331918200002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/61969
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 100081, Peoples R China
2.Natl Engn Lab Digital & Mat Technol Stomatol, Beijing 100081, Peoples R China

Recommended Citation:
Liu, Jing,Sun, Yuchun,Wang, Yong,et al. Effects of Yb:KYW thin-disk femtosecond laser ablation on enamel surface roughness[J]. OPTICS AND LASER TECHNOLOGY,2014,59:7-10.
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