Optimizing Deep Bone Ablation by Means of a Microsecond Er:YAG Laser and a Novel Water Microjet Irrigation System

Overview

Journal Biomed Opt Express

Specialty Radiology

Date 2021 Jan 7

PMID 33408994

Citations 11

Authors

Lina M Beltran Bernal

Ferda Canbaz

Antoine Droneau

Niklaus F Friederich

Philippe C Cattin

Azhar Zam

Affiliations

Soon will be listed here.

Abstract

The microsecond Er:YAG pulsed laser with a wavelength of = 2.94 m has been widely used in the medical field, particularly for ablating dental tissues. Since bone and dental tissues have similar compositions, consisting of mineralized and rigid structures, the Er:YAG laser represents a promising tool for laserosteotomy applications. In this study, we explored the use of the Er:YAG laser for deep bone ablation, in an attempt to optimize its performance and identify its limitations. Tissue irrigation and the laser settings were optimized independently. We propose an automated irrigation feedback system capable of recognizing the temperature of the tissue and delivering water accordingly. The irrigation system used consists of a thin 50 m diameter water jet. The water jet was able to penetrate deep into the crater during ablation, with a laminar flow length of 15 cm, ensuring the irrigation of deeper layers unreachable by conventional spray systems. Once the irrigation was optimized, ablation was considered independently of the irrigation water. In this way, we could better understand and adjust the laser parameters to suit our needs. We obtained line cuts as deep as 21 mm without causing any visible thermal damage to the surrounding tissue. The automated experimental setup proposed here has the potential to support deeper and faster ablation in laserosteotomy applications.

Citing Articles

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Numerical study of a convective cooling strategy for increasing safe power levels in two-photon brain imaging.

Roy A, Ben-Yakar A Biomed Opt Express. 2024; 15(2):540-557.

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Relevant parameters for laser surgery of soft tissue.

Hohmann M, Kuhn D, Ni D, Spath M, Ghosh A, Rohde M Sci Rep. 2024; 14(1):1263.

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Towards phase-sensitive optical coherence tomography in smart laser osteotomy: temperature feedback.

Hamidi A, Bayhaqi Y, Canbaz F, Navarini A, Cattin P, Zam A Lasers Med Sci. 2023; 38(1):222.

PMID: 37752387 PMC: 10522524. DOI: 10.1007/s10103-023-03886-z.

Thermal damage and the prognostic evaluation of laser ablation of bone tissue-a review.

Xiao L, Guo J, Wang H, He Q, Xu Y, Yuan L Lasers Med Sci. 2023; 38(1):205.

PMID: 37676517 DOI: 10.1007/s10103-023-03868-1.

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