Performance of Er:YAG laser ablation of hard bone under different irrigation water cooling conditions
Performance of Er:YAG laser ablation of hard bone under different irrigation water cooling conditions
The biological applicability of the Erbium-doped Yttrium Aluminum Garnet
(Er:YAG) laser in surgical processes is so far limited to hard dental
tissues. Using the Er:YAG laser for bone ablation is being studied since
it has shown good performance for ablating dental hard tissues at the
wavelength 2.94 μm, which coincides with the absorption peak of
water, one of the main components of hard tissue, like teeth and bone.
To obtain a decent performance of the laser in the cutting process, we
aim at examining the influence of sequenced water jet irrigation on
both, the ablation rate and the prevention of carbonization while
performing laser ablation of bone with fixed laser parameters. An Er:YAG
laser at 2.94 μm wavelength, 940 mJ energy per pulse, 400 μs pulse
width, and 10 Hz repetition rate is used for the ablation of a porcine
femur bone under different pulsed water jet irrigation conditions. We
used micro-computed tomography (micro-CT) scans to determine the
geometry of the ablated areas. In addition, scanning electron microscopy
(SEM) is used for qualitative observations for the presence of
carbonization and micro-fractures on the ablated surfaces. We evaluate
the performance of the laser ablation process for the different water
jet conditions in terms of the ablation rate, quantified by the ablated
volume per second and the ablation efficiency, calculated as the ablated
volume per pulse energy. We provide an optimized system for laser
ablation which delivers the appropriate amount of water to the bone and
consequently, the bone is ablated in the most efficient way possible
without carbonization.
Beltrán Bernal, Lina M.
025992a8-d8d4-4b28-b993-bdb46771834b
Shayeganrad, Gholamreza
8ea55a9a-4fe2-49df-a0f4-55fa81596dab
Kosa, Gabor
ccaf6a92-2fad-4dc7-9802-a85a7a821dff
Zelechowski, Marek
431207d6-3cf3-4402-89e6-5709b1f51d48
Rauter, Georg
194752ee-f8d3-4916-a618-733b13f0747f
Friederich, Niklaus
431eff65-1a1c-4996-a258-bbaa3b94d7f5
Cattin, Philippe C.
8f98e27f-7f72-490f-8189-5f10d2d3b25c
Zam, Azhar
c5223d19-47f2-43a6-9a4e-c48e467e532a
1 February 2018
Beltrán Bernal, Lina M.
025992a8-d8d4-4b28-b993-bdb46771834b
Shayeganrad, Gholamreza
8ea55a9a-4fe2-49df-a0f4-55fa81596dab
Kosa, Gabor
ccaf6a92-2fad-4dc7-9802-a85a7a821dff
Zelechowski, Marek
431207d6-3cf3-4402-89e6-5709b1f51d48
Rauter, Georg
194752ee-f8d3-4916-a618-733b13f0747f
Friederich, Niklaus
431eff65-1a1c-4996-a258-bbaa3b94d7f5
Cattin, Philippe C.
8f98e27f-7f72-490f-8189-5f10d2d3b25c
Zam, Azhar
c5223d19-47f2-43a6-9a4e-c48e467e532a
Beltrán Bernal, Lina M., Shayeganrad, Gholamreza, Kosa, Gabor, Zelechowski, Marek, Rauter, Georg, Friederich, Niklaus, Cattin, Philippe C. and Zam, Azhar
(2018)
Performance of Er:YAG laser ablation of hard bone under different irrigation water cooling conditions.
Proceedings of the SPIE, 0492.
(doi:10.1117/12.2290929).
Abstract
The biological applicability of the Erbium-doped Yttrium Aluminum Garnet
(Er:YAG) laser in surgical processes is so far limited to hard dental
tissues. Using the Er:YAG laser for bone ablation is being studied since
it has shown good performance for ablating dental hard tissues at the
wavelength 2.94 μm, which coincides with the absorption peak of
water, one of the main components of hard tissue, like teeth and bone.
To obtain a decent performance of the laser in the cutting process, we
aim at examining the influence of sequenced water jet irrigation on
both, the ablation rate and the prevention of carbonization while
performing laser ablation of bone with fixed laser parameters. An Er:YAG
laser at 2.94 μm wavelength, 940 mJ energy per pulse, 400 μs pulse
width, and 10 Hz repetition rate is used for the ablation of a porcine
femur bone under different pulsed water jet irrigation conditions. We
used micro-computed tomography (micro-CT) scans to determine the
geometry of the ablated areas. In addition, scanning electron microscopy
(SEM) is used for qualitative observations for the presence of
carbonization and micro-fractures on the ablated surfaces. We evaluate
the performance of the laser ablation process for the different water
jet conditions in terms of the ablation rate, quantified by the ablated
volume per second and the ablation efficiency, calculated as the ablated
volume per pulse energy. We provide an optimized system for laser
ablation which delivers the appropriate amount of water to the bone and
consequently, the bone is ablated in the most efficient way possible
without carbonization.
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Published date: 1 February 2018
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Local EPrints ID: 479705
URI: http://eprints.soton.ac.uk/id/eprint/479705
PURE UUID: 03c9d80f-4513-45c5-bad3-452d26dd9f0b
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Date deposited: 26 Jul 2023 16:49
Last modified: 17 Mar 2024 03:53
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Contributors
Author:
Lina M. Beltrán Bernal
Author:
Gabor Kosa
Author:
Marek Zelechowski
Author:
Georg Rauter
Author:
Niklaus Friederich
Author:
Philippe C. Cattin
Author:
Azhar Zam
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