Femtosecond-pulse laser ablation of dental hydroxyapatite and single-crystalline fluoroapatite

被引:0
|
作者
J. Krüger
W. Kautek
H. Newesely
机构
[1] Labor für Dünnschichttechnologien,
[2] Bundesanstalt für Materialforschung und -prüfung,undefined
[3] Unter den Eichen 87,undefined
[4] 12205 Berlin,undefined
[5] Germany (Fax: +49-30/8104-1827,undefined
[6] E-mail: joerg.krueger@bam.de),undefined
[7] Institut für Klinisch-Theoretische Zahn-,undefined
[8] Mund- und Kieferheilkunde,undefined
[9] Freie Universität Berlin,undefined
[10] Assmannshauserstrasse 4-6,undefined
[11] 14197 Berlin,undefined
[12] Germany,undefined
关键词
PACS: 42.62.C; 79.20.D; 87.45.B;
D O I
10.1007/PL00024633
中图分类号
学科分类号
摘要
Laser microdrilling of healthy human enamel and dentine using 300 fs pulses at a wavelength of 615 nm and 3 Hz repetition rate leads to an enhanced structuring quality in comparison with nanosecond-laser results. Microcracking and damage to neighboring tissue can be reduced. Ablation threshold fluences for 100 laser pulses of 0.3 J cm-2 (human dentine), 0.6 J cm-2 (human enamel) and 0.8 J cm-2 (single crystalline fluoroapatite) could be determined. Ablation depths per pulse below 1 μm were observed.
引用
收藏
页码:S403 / S407
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