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- Title
Precision ablation of dental enamel using a subpicosecond pulsed laser.
- Authors
Rode, A.V.; Gamaly, E.G.; Luther-Davies, B.; Taylor, B.T.; Graessel, M.; Dawes, J.M.; Chan, A.; Lowe, R.M.; Hannaford, P.
- Abstract
In this study we report the use of ultra-short-pulsed near-infrared lasers for precision laser ablation of freshly extracted human teeth. The laser wavelength was ∼800nm, with pulsewidths of 95 and 150fs, and pulse repetition rares of 1kHz. The laser beam was focused to an approximate diameter of 50µm and was scanned over the tooth surface. The rise in the intrapulpal temperature was monitored by embedded thermocouples, and was shown to remain below 5°C when the tooth was air-cooled during laser treatment. The surface preparation of the ablated teeth, observed by optical and electron microscopy, showed no apparent cracking or heat effects, and the hardness and Raman spectra of the laser-treated enamel were not distinguishable from those of native enamel. This study indicates the potential for ultra-short-pulsed lasers to effect precision ablation of dental enamel. Key words: Laser treatment; subpicosecond laser ablation; temperature monitoring; dental enamel.
- Subjects
DENTAL enamel; LASER ablation; LASER beams; ELECTRON microscopy; RAMAN effect; DENTISTRY
- Publication
Australian Dental Journal, 2003, Vol 48, Issue 4, p233
- ISSN
0045-0421
- Publication type
journal article
- DOI
10.1111/j.1834-7819.2003.tb00036.x