期刊
LASERS IN SURGERY AND MEDICINE
卷 36, 期 5, 页码 347-350出版社
WILEY
DOI: 10.1002/lsm.20168
关键词
erbium; oral surgery; root resection; speed; VSP laser
Background and Objectives: Variable square pulse (VSP) Er:YAG laser should be quicker than older Er:YAG lasers. The objectives were: (1) comparison of VSP laser and mechanical handpiece efficacy for apicectomy and (2) determination of optimal pulse width/energy/frequency combination. Study Design/Materials and Methods: Sixty extracted, single-rooted mature human teeth with round apical parts were instrumented, root filled, cleaned, and divided into four groups. Apical 2 mm of each root were apicectomized with mechanical handpiece and Er:YAG laser with three different settings (LaserA=200 mJ/300 microseconds/ 8 Hz; LaserB = 200 mJ/100 microseconds/8 Hz; LaserC = 380 mJ/100 microseconds/20 Hz). Timing results were statistically compared. Results: LaserC was the most efficient setting. differences between groups were significant except between LaserC-Mechanical and LaserA-LaserC (P < 0.05). Conclusions: VSP Er:YAG laser used for apicectomy is slower by a factor of 7-31 than mechanical handpiece, but treatment outcome is acceptable. Optimal settings for apicectomy with VSP laser are 380 mJ/100 microseconds/ 20 Hz. (c) 2005 Wiley-Liss, Inc.
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