engleski

In vitro study of the variable square pulse Er:YAG laser cutting efficacy for apicectomy

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. 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 μ s/8 Hz ; LaserB=200 mJ/100 μ s/8 Hz ; LaserC=380 mJ/100 μ s/20 Hz). Timing results were statistically compared. LaserC was the most efficient setting. Differences between groups were significant except between LaserC-Mechanical, and LaserA -LaserC (p<0.05). 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 μ s/20 Hz.

Erbium:YAG; oral surgery; root resection; speed; VSP laser

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