Quantitative determination of cut efficiency during soft tissue surgery using diode lasers in the wavelength range between 400 and 1500 nm.
Efficiency factor
Evaluation masks
Histology
Interaction zones
Porcine gingiva
Journal
Lasers in medical science
ISSN: 1435-604X
Titre abrégé: Lasers Med Sci
Pays: England
ID NLM: 8611515
Informations de publication
Date de publication:
Oct 2021
Oct 2021
Historique:
received:
24
09
2020
accepted:
29
12
2020
pubmed:
27
1
2021
medline:
16
10
2021
entrez:
26
1
2021
Statut:
ppublish
Résumé
Within the scope of this ex vivo study, the cut efficiency was investigated with eight diode laser wavelengths in the range from 400 to 1500 nm. Incisions on porcine gingiva samples were generated in CW-mode at a power range of 0.5-4 W using a bare fiber (∅ = 320 μm) in contact and non-contact mode at a cut speed of 2 mm/s. Cut depths, cut widths, and thermal damages were recorded based on histological sections and were evaluated via measurement masks. Moreover, with respect to the controllability of a therapeutic measure, an efficiency factor was defined. At powers above 2 W, for 445 nm, the maximum cut depth was 820 μm and 344 μm for 810 nm, respectively. At all wavelength and power ranges, the cut width averaged 125 μm. At minimum output power (0.5 W), the spatial expansion of the thermal damage in the tissue surface layer corresponds in the blue/green wavelength range from the very beginning of the laser impact to the fiber core diameter. It could be shown that increases in the diode laser power output do not correlate to the same extent with the incision depth nor with thermal damage to tissue.
Identifiants
pubmed: 33496905
doi: 10.1007/s10103-020-03243-4
pii: 10.1007/s10103-020-03243-4
pmc: PMC8433103
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1633-1647Informations de copyright
© 2021. The Author(s).
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