Picosecond laser ablation of dentine in endodontics

Serafetinides, AA; Khabbaz, MG; Makropoulou, MI; Kar, AK

dc.contributor.author	Serafetinides, AA	en
dc.contributor.author	Khabbaz, MG	en
dc.contributor.author	Makropoulou, MI	en
dc.contributor.author	Kar, AK	en
dc.date.accessioned	2014-03-01T01:15:03Z
dc.date.available	2014-03-01T01:15:03Z
dc.date.issued	1999	en
dc.identifier.issn	0268-8921	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13313
dc.subject	Endodontics	en
dc.subject	Laser ablation	en
dc.subject	Nd:YAG laser	en
dc.subject	Picosecond laser	en
dc.subject	Root canal therapy	en
dc.subject.classification	Engineering, Biomedical	en
dc.subject.classification	Surgery	en
dc.subject.other	article	en
dc.subject.other	dentin	en
dc.subject.other	device	en
dc.subject.other	endodontics	en
dc.subject.other	human	en
dc.subject.other	human tissue	en
dc.subject.other	laser surgery	en
dc.subject.other	microscope	en
dc.subject.other	neodymium laser	en
dc.subject.other	priority journal	en
dc.subject.other	scanning electron microscope	en
dc.subject.other	scanning electron microscopy	en
dc.title	Picosecond laser ablation of dentine in endodontics	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s101030050080	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s101030050080	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The interaction of picosecond laser radiation with human dental tissue was investigated in this study, in order to determine the ablation rates and the surface characteristics of the dentine by using scanning electron microscopy (SEM). Dentine ablation was performed by using tooth sections of different thicknesses (0.5-2.0 mm). Dental tissue samples were irradiated in air with the fundamental wavelength and first harmonic of a regenerative amplifier Nd:YAG laser system, at 1064 nm and 532 nm, respectively, with a pulse duration of 100 ps and a pulse repetition rate of 10 Hz. The results showed very clean craters surrounded by minimum melting of the surface of dentine when the 1064 nm pulses were used. In contrast, when the first harmonic 532 nm pulses were used, the SEM examinations revealed cracks and melting of dentine with irregular surface modification. Consequently, it seems that cleaning and shaping of the root canal walls during endodontic therapy with the picosecond Nd:YAG laser application may be possible in the future. The, as yet unexplored, field of the picosecond laser interaction with hard dental tissue is expected to be a potential alternative for powerful laser processing of biomedical structures.	en
heal.publisher	SPRINGER-VERLAG LONDON LTD	en
heal.journalName	Lasers in Medical Science	en
dc.identifier.doi	10.1007/s101030050080	en
dc.identifier.isi	ISI:000083393600002	en
dc.identifier.volume	14	en
dc.identifier.issue	3	en
dc.identifier.spage	168	en
dc.identifier.epage	174	en