Pulsed HF laser ablation of dentin

Papagiakoumou, E; Papadopoulos, DN; Makropoulou, M; Khabbaz, MG; Serafetinides, AA

dc.contributor.author	Papagiakoumou, E	en
dc.contributor.author	Papadopoulos, DN	en
dc.contributor.author	Makropoulou, M	en
dc.contributor.author	Khabbaz, MG	en
dc.contributor.author	Serafetinides, AA	en
dc.date.accessioned	2014-03-01T02:50:11Z
dc.date.available	2014-03-01T02:50:11Z
dc.date.issued	2005	en
dc.identifier.issn	0277786X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34939
dc.subject	Ablation rate	en
dc.subject	Ablation threshold	en
dc.subject	Dentin	en
dc.subject	Hard tissue ablation	en
dc.subject	HF laser	en
dc.subject.other	Carbonization	en
dc.subject.other	Data reduction	en
dc.subject.other	Laser beams	en
dc.subject.other	Laser damage	en
dc.subject.other	Light amplifiers	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Ablation rate	en
dc.subject.other	Ablation threshold	en
dc.subject.other	Dentin	en
dc.subject.other	Hard tissue ablation	en
dc.subject.other	Hydrogen fluoride (HF) laser beams	en
dc.subject.other	Laser ablation	en
dc.title	Pulsed HF laser ablation of dentin	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1117/12.611336	en
heal.identifier.secondary	http://dx.doi.org/10.1117/12.611336	en
heal.identifier.secondary	191	en
heal.publicationDate	2005	en
heal.abstract	The interaction of a TEA (Transversally Excited Atmospheric pressure) corona preionized oscillator double amplifier HF (hydrogen fluoride) laser beam with dentin tissue is reported. Pulses of 39 ns in the wavelength range of 2.65-3.35 μm and output energies in the range of 10-45 mJ, in a predominantly TEM00 beam were used to interact with dentin tissue. Ablation experiments were conducted with the laser beam directly focused on the tissue. Several samples of freshly extracted human teeth were used, cut longitudinally in facets of about 1mm thick and stored in phosphate buffered saline after being cleaned from the soft tissue remains. The experimental data (ablation thresholds, ablation rates) are discussed with respect to the ablation mechanism(s). Adequate tissue removal was observed and the ablation behavior was, in the greatest part of the available fluences, almost linear. From the microscopic examination of the samples, in a scanning electron microscope (SEM), the irradiated surfaces displayed oval craters (reflecting the laser beam shape) with absence of any melting or carbonization zone. It is suggested that the specific laser removes hard tissue by a combined photothermal and plasma mediated ablation mechanism, leaving a surface free from thermal damage and with a well-shaped crater.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.doi	10.1117/12.611336	en
dc.identifier.volume	5777	en
dc.identifier.issue	PART II	en
dc.identifier.spage	978	en
dc.identifier.epage	981	en