JOURNAL OF SHANDONG UNIVERSITY (OTOLARYNGOLOGY AND OPHTHALMOLOGY) ›› 2016, Vol. 30 ›› Issue (4): 75-79.doi: 10.6040/j.issn.1673-3770.0.2015.552

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Bone ablation in middle ear with pulsed CO2 laser and Er:YAG laser: an experimental study.

WANG Xiaoyan1, ZHENG Yanqing2, ZHENG Hao1, YE Qing   

  1. 1. Department of Otolaryngology, Provincial Hospital of Fujian Medical University, Fuzhou 350001, Fujian, China;2. Quanzhou Women and Childrens Hospital, Quanzhou 362000, Fujian, China
  • Received:2015-12-29 Online:2016-08-16 Published:2016-08-16

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Abstract: Objective To study the feasibility of bone ablation in middle ear with pulsed CO2 laser and Er:YAG laser in rabbit models, in order to provide a new and safe tool for fenestration operation in middle ear. Methods A total of 24 New Zealand rabbits were randomly divided into 3 groups: drill group, CO2 laser group, and Er:YAG laser group. The three tools were used to perform fenestration operation of middle ear. The feasibility of bone ablation, experimental phenomena, total operation time and light irradiation time, and opening efficiency were compared. The morphologic changes of adjacent tissues were observed with tissue slicing and HE staining after irradiation. Results All of the three approaches were suitable for fenestration operation of middle ear bone, with different operation time, but there was no statistical difference(P>0.05). The three groups had similar morphologic characteristics after fenestration. Conclusion Both pulsed CO2 laser and Er:YAG laser can ablate bone rapidly in the fenestration operation, which can serve as a new tool in otological surgeries besides electric drill.

Key words: Middle ear, Er:YAG laser, Bone ablation, Electric drill, CO2 laser

CLC Number: 

  • R764.9
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