Data for: Comparative Study of Nanosecond Laser Wavelengths for Improved LIBS Analysis of Soft Tissues [* Cross-Reference *]

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Kopřivová, Hana; Fedra, Vojtěch; Buday, Jakub; Holub, Daniel; Šperka, Petr; Vrlikova, Lucie; Buchtova, Marcela; Pořízka, Pavel; Kaiser, Jozef, 2026, "Data for: Comparative Study of Nanosecond Laser Wavelengths for Improved LIBS Analysis of Soft Tissues [* Cross-Reference *]", https://lore.list.lu/citation?persistentId=perma:LIST.MLLK4Z, LIST Open Repository, V1
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Description
Objective: We have investigated and compared the main morphological features of human enamel tissue under Nd:YAG nanosecond and picosecond laser ablation. Background Data: The use of ultrashort laser pulses on teeth ablation is an alternative to avoid overheating and presents the advantage of minimizing the volume of damaged material during laser ablation. Comparison of the morphology obtained in laser ablation using nanosecond and picosecond laser pulses is a way to investigate the advantages of ultrashort laser pulses for ablation. Methods: Trains of pulses with picosecond duration from a Q-switched and mode-locked Nd:YAG laser and pulses with nanosecond duration from a Q-switched Nd:YAG laser, both operating at 15 Hz kept at the same average power, were focused in human sound molars for 30 sec. Drilled holes with different morphological characteristics were observed using several laser intensity regimes. Enamel surfaces were examined using a scanning electron microscope (SEM) and their morphological characteristics compared. Results: An interesting contrast between the morphology of the enamel when treated with different level of laser power and pulse duration was observed. Picosecond pulses promote a better-defined material removal with a minimum intermediate region, whereas nanosecond pulses at the equivalent average power level cause a large intermediate modified region between ablated and normal tissue, as well as a complete superficial modification of the existent original structure. Conclusion: Our results show an important correlation between the surface morphology and the pulse width of the lasers, suggesting advantages toward the use of ultrashort laser pulses in dentistry. (2026-02-03)
***This entry has been automatically imported via Datacite by LIST harvest scripts. Please refer to https://doi.org/10.5281/zenodo.18376508 for the original and latest version of the dataset and data downloads***
Subject Medicine, Health and Life Sciences; Physics
Keyword laser ablation, ultrashort laser pulses, dentistry
Related Publication References: Lizarelli, R.F.Z. & Kurachi, C & Misoguti, L & Bagnato, V.. (2000). A Comparative Study of Nanosecond and Picosecond Laser Ablation in Enamel: Morphological Aspects. Journal of clinical laser medicine & surgery. 18. 151-7. 10.1089/clm.2000.18.151.doi: 10.1089/clm.2000.18.151
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