The University of Southampton
University of Southampton Institutional Repository

Laser characteristics on hard tissue laser machining

Laser characteristics on hard tissue laser machining
Laser characteristics on hard tissue laser machining
Laser ablation of hard-tissue is coming today the most common medical application of the laser, mainly because of ability to cut faster, less invasive, and free incision geometry with a higher quality than the competing processes. Great efforts have been taken in the past to develop laser systems suitable for efficient laser ablation of hard-tissue. One of the drawbacks of the water-cooled laser-assisted bone cutting process is the limitation in incision depth. There are two main energy loss mechanisms which limit the achievable depth in addition to the absorption and scattering of laser energy by water. The first is the growing heat diffusion from the increasing surface area of the incision. The second is the increasing absorption and scattering of laser light by the ablation debris which is confined in deeper cuts. The desired specifications on the laser hard tissue ablation vary a lot in terms of laser parameters. In this paper, the influence of main laser parameters on water-cooled hard tissue laser ablation is reviewed. In particular, the role of the laser intensity, wavelength, duration of the laser pulse on depth of incision and mechanisms of photon energy transfer to biomedical materials are presented. In addition, the dependence of the ablation efficiency AE on the water content of the hard-tissue is presented. Finally, we presented a novel method that can bypass the limitation of the incision depth that can be introduced to laser osteotomy by long-pulsed mid-infrared lasers. In this technique an array of rotational micro-lens combined with a normal lens focuses the laser light on the bone tissue sample to increase the maximal incision depth.
17-36
Shayeganrad, Gholamreza
8ea55a9a-4fe2-49df-a0f4-55fa81596dab
Shayeganrad, Gholamreza
8ea55a9a-4fe2-49df-a0f4-55fa81596dab

Shayeganrad, Gholamreza (2018) Laser characteristics on hard tissue laser machining. Sensors & Transducers, 226 (10), 17-36.

Record type: Article

Abstract

Laser ablation of hard-tissue is coming today the most common medical application of the laser, mainly because of ability to cut faster, less invasive, and free incision geometry with a higher quality than the competing processes. Great efforts have been taken in the past to develop laser systems suitable for efficient laser ablation of hard-tissue. One of the drawbacks of the water-cooled laser-assisted bone cutting process is the limitation in incision depth. There are two main energy loss mechanisms which limit the achievable depth in addition to the absorption and scattering of laser energy by water. The first is the growing heat diffusion from the increasing surface area of the incision. The second is the increasing absorption and scattering of laser light by the ablation debris which is confined in deeper cuts. The desired specifications on the laser hard tissue ablation vary a lot in terms of laser parameters. In this paper, the influence of main laser parameters on water-cooled hard tissue laser ablation is reviewed. In particular, the role of the laser intensity, wavelength, duration of the laser pulse on depth of incision and mechanisms of photon energy transfer to biomedical materials are presented. In addition, the dependence of the ablation efficiency AE on the water content of the hard-tissue is presented. Finally, we presented a novel method that can bypass the limitation of the incision depth that can be introduced to laser osteotomy by long-pulsed mid-infrared lasers. In this technique an array of rotational micro-lens combined with a normal lens focuses the laser light on the bone tissue sample to increase the maximal incision depth.

This record has no associated files available for download.

More information

Accepted/In Press date: 31 August 2018
Published date: 31 October 2018

Identifiers

Local EPrints ID: 479100
URI: http://eprints.soton.ac.uk/id/eprint/479100
PURE UUID: 54a845c4-02d7-432a-8fa7-077d7ff35504
ORCID for Gholamreza Shayeganrad: ORCID iD orcid.org/0000-0002-5225-2176

Catalogue record

Date deposited: 20 Jul 2023 16:33
Last modified: 28 Jul 2023 01:54

Export record

Contributors

Author: Gholamreza Shayeganrad ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×