Picosecond and femtosecond laser ablation of hard tissues

Serafetinides Alexander, A; Makropoulou Mersini, I; Kar Ajoy, K; Khabbaz, Marouan

dc.contributor.author	Serafetinides Alexander, A	en
dc.contributor.author	Makropoulou Mersini, I	en
dc.contributor.author	Kar Ajoy, K	en
dc.contributor.author	Khabbaz, Marouan	en
dc.date.accessioned	2014-03-01T01:44:50Z
dc.date.available	2014-03-01T01:44:50Z
dc.date.issued	1996	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24497
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0030354384&partnerID=40&md5=c80c290a10f074441bccd06c02446675	en
dc.subject.other	Dentin	en
dc.subject.other	Femtosecond laser ablation	en
dc.subject.other	Hard dental tissue	en
dc.subject.other	Picosecond laser ablation	en
dc.subject.other	Second harmonic lasers	en
dc.subject.other	Thermal damage	en
dc.subject.other	Tunable dye amplifiers	en
dc.subject.other	Dentistry	en
dc.subject.other	Laser pulses	en
dc.subject.other	Radiation damage	en
dc.subject.other	Second harmonic generation	en
dc.subject.other	Laser ablation	en
dc.title	Picosecond and femtosecond laser ablation of hard tissues	en
heal.type	journalArticle	en
heal.publicationDate	1996	en
heal.abstract	In this study, the interaction of picosecond and femtosecond pulsed laser radiation with human dental tissue was investigated experimentally, as this unexplored field is expected to be a potential alternative in powerful laser processing of biomedical structures. Dentin ablation rate experiments were performed by using teeth sections of different thickness. Dental tissue samples were irradiated in air with i) a regenerative amplifier laser at 1064 nm, pulse duration 110 ps, ii) the second harmonic laser at 532 nm, pulse duration 100 ps, and iii) a picosecond tunable dye amplifier at 595 nm, pulse width 800 fs. In all the experiments the pulse repetition rate was 10 Hz. The ablation rate per pulse at different energy fluence settings was calculated by measuring the time needed for the perforation of the whole dental sample thickness. Short laser pulses can confine thermal energy within the optical zone, which maximizes photothermal and photomechanical mechanisms of interaction. Tissue ablation rates were found to be comparable to or better than other nanosecond lasers, and left smooth surfaces, free of thermal damage.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.volume	2922	en
dc.identifier.spage	200	en
dc.identifier.epage	208	en