Cutting efficiency of a mid-infrared laser on human enamel

Journal of Endodontics
G LevyL J Miserendino

Abstract

In this study, the cutting ability of a newly developed dental laser was compared with a dental high-speed handpiece and rotary bur for removal of enamel. Measurements of the volume of tissue removed, energy emitted, and time of exposure were used to quantify the ablation rate (rate of tissue removal) for each test group and compared. Cutting efficiency (mm3/s) of the laser was calculated based on the mean volume of tissue removed per pulse (mm3/pulse) and unit energy expended (mm3/J) over the range of applied powers (2, 4, 6, and 8 W). The specimens were then examined by light microscopy and scanning electron micrographs for qualitative analysis of the amount of remaining debris and the presence of the smear layer on the prepared enamel surface. Calculations of the cutting efficiency of the laser over the range of powers tested revealed a linear relationship with the level of applied power. The maximum average rate of tissue removal by the laser was 0.256 mm3/s at 8 W, compared with 0.945 mm3/s by the dental handpiece. Light microscopy and scanning electron micrograph examinations revealed a reduction in the amount of remaining debris and smear layer in the laser-prepared enamel surfaces, compared with the conventional method....Continue Reading

References

Jan 1, 1992·Caries Research·I AnićM Tudja
Feb 1, 1990·Journal of Endodontics·G Bergenholtz
Jul 1, 1989·Journal of Endodontics·L J MiserendinoW Brantley
Mar 1, 1972·Journal of Dental Research·R H SternR F Sognnaes
Jan 1, 1993·Lasers in Surgery and Medicine·L J MiserendinoC A Miserendino

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Citations

Jan 24, 2004·Australian Dental Journal·A V RodeP Hannaford
Jan 8, 2004·Journal of Clinical Laser Medicine & Surgery·O R KellerG K Eyrich
Jan 18, 2006·Journal of Oral Rehabilitation·C TürkmenM Günday
Apr 9, 2011·Lasers in Medical Science·Ozgul BayginMehmet Tanriver
Jan 22, 2002·Journal of Clinical Laser Medicine & Surgery
Jan 22, 2002·Journal of Clinical Laser Medicine & Surgery·D G YuK Matsumoto

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