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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 11, Iss. 5 — May. 1, 2013
  • pp: 051701–

Determination of ablation threshold of dental hard tissues irradiated with Er:YAG and Er,Cr:YSGG lasers

Zhenlin Zhan, Xianzeng Zhang, Wenqing Guo, and Shusen Xie  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 5, pp. 051701- (2013)


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Abstract

We evaluate the ablation thresholds of Er:YAG and Er,Cr:YSGG laser for enamel and dentin. A total of 140 dental slices is evenly divided into two groups: the dentin group and the enamel group. Dental tissues are irradiated with either an Er:YAG laser or an Er,Cr:YSGG laser with pulse widths in the order of 100 μs. The laser fluence is increased gradually until the ablation crater is formed. The laser ablation threshold is calculated using probit analysis. The ablation thresholds of the Er:YAG laser for dentin and enamel range from 2.88 to 3.36 J/cm<sup>2</sup> and from 2.94 to 3.8 J/cm<sup>2</sup>, respectively, and the ablation thresholds of the Er,Cr:YSGG laser for dentin and enamel range from 2.92 to 4.2 J/cm<sup>2</sup> and from 4.93 to 5.66 J/cm<sup>2</sup>, respectively.

© 2013 Chinese Optics Letters

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(170.1020) Medical optics and biotechnology : Ablation of tissue
(170.1850) Medical optics and biotechnology : Dentistry

ToC Category:
Medical Optics and Biotechnology

Citation
Zhenlin Zhan, Xianzeng Zhang, Wenqing Guo, and Shusen Xie, "Determination of ablation threshold of dental hard tissues irradiated with Er:YAG and Er,Cr:YSGG lasers," Chin. Opt. Lett. 11, 051701- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-5-051701


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