β Scribed by Gregory B. Altshuler; Andrei V. Belikov; Yury A. Sinelnik
No coin nor oath required. For personal study only.
This paper introduced a new method for the removal of hard dental tissue based upon the use of particles accelerated by laser irradiation, which the authors have called the laserβabrasive method.
The particles used were sapphire as powder or an aqueous suspension. The effect of the products of enamel ablation was also investigated. The particles were accelerated using submillisecond pulses of Er:YAG and Nd:YAG lasers. A strobing CCD camera was used to measure the speed of the ejected particles. The additional contribution of these particles to the efficiency of laser ablation of enamel and dentin was also investigated.
The results showed that the enamel particles produced by the beamβtissue interaction were also accelerated by this process of ablation and were effective in the removal of enamel and dentin. The use of an aqueous suspension of sapphire particles increased the efficiency of enamel removal threefold when compared with the use of an Er:YAG laser with water spray.
The laserβabrasive method allowed for the removal of enamel and dentin at speeds approaching those of the highβspeed turbine. Lasers Surg. Med. 39:435β444, 2001. Β© 2001 WileyβLiss, Inc.
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