Femtosecond laser ablation on dental hard tissues—Analysis of ablated profile near an interface using local effective intensity

Dutra-Correa, Maristela; Nicolodelli, Gustavo; Rodrigues, Jeferson; Kurachi, Cristina; Bagnato, Vanderlei Salvador

doi:10.1134/s1054660x11090064

Cited by 17 publications

(14 citation statements)

References 34 publications

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“…To start the remineralization activity of the dentin surface, the power of the femtosecond laser was adjusted to milliwatts (300 mW). The photoactivation duration was set at 5 min [ 23 ].…”

Section: Methodsmentioning

confidence: 99%

Using Femtosecond Laser Light-Activated Materials: The Biomimetic Dentin Remineralization Was Monitored by Laser-Induced Breakdown Spectroscopy

et al. 2023

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Introduction: The purpose of this study is to investigate and compare the effects of the antimicrobial agents Moringa oleifera and bioactive glass nanoparticles activated by femtosecond laser light on the biomimetic dentin remineralization using teeth having carious dentin ICDAS code 3. Methods and Materials: A total of 27 dentin surface samples were divided into three groups: the first group was treated with a Moringa oleifera extract, while the second group was treated with bioactive glass nanoparticles, and as for the control group, the third group received no additional agent. All groups were subjected to femtosecond laser light at three different wavelengths: 390 nm, 445 nm, and 780 nm. The photoactivation of each sample was achieved using the femtosecond laser light for 5 min with an average power rating of 300 mW, a pulse duration of 100 fs, and a pulse repetition rate of 80 Hz. The mineral content of the samples was obtained and analyzed using the laser-induced breakdown spectroscopy (LIBS). The LIBS analysis was conducted with the following laser light parameters: average power of ~215 mW, wavelength of 532 nm, pulse duration of 10 ns, and a pulse repetition rate of 10 Hz. Results: Most studied samples exhibited a relative increase in the mineral content that may enhance biomimetic remineralization. Moringa oleifera photoactivated by femtosecond laser light at 445 nm achieved a significant increase in mineral content. Conclusion: Using the femtosecond laser light to activate the relatively cheap and commercially available antimicrobial agent Moringa oleifera supports the strategy of minimal invasive approaches for the treatment and biomimetic remineralization of carious dentin ICDAS code 3.

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“…To start the remineralization activity of the dentin surface, the power of the femtosecond laser was adjusted to milliwatts (300 mW). The photoactivation duration was set at 5 min [ 23 ].…”

Section: Methodsmentioning

confidence: 99%

Using Femtosecond Laser Light-Activated Materials: The Biomimetic Dentin Remineralization Was Monitored by Laser-Induced Breakdown Spectroscopy

et al. 2023

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“…Recently, the use of fields started to be applied in an interventionist way with apparent damage containment in relation to the alleged benefits, sometimes in a noninvasive way. Examples of these techniques are radiotherapy for intervention in neoplastic processes; implant of cardiac pacemakers; electrical cardioversion in emergencies of cardiac arrhythmias; shock wave lithotripsy (SWL); laser beams for surgical interventions; cardioversion with blue light (optogenetics); neuromodulation; but they continue disregarding the biofield for treatment as the traditional knowledge can do [25][26][27][28][29][30][31].…”

Section: Literature Review 21 the Biofield For Sciencementioning

confidence: 99%

La Gioconda Effect and Self-Organizing Factors of Biofield

Silva¹

2019

Traditional and Complementary Medicine

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The intriguing trajectory of Mona Lisa painting by Leonardo da Vinci and its attraction to people is similar to the story of Homeopathy: an unprecedented brief description of La Gioconda effect. Homeopathy continues to move through the use, textual production, and new modalities of using its medications. The development of the "Self-Organizing Factors of Biofield" (BioFAO) with complex of seven homeopathic medicines will be presented applied in life sciences. BioFAO corroborates Hering's Healing Laws and obstacles to healing. Regardless of the point of view, innovations happen in Homeopathy, either in the stricto sensu or in the lato sensu of its classical known terminology. The La Gioconda effect mysteriously maintains Homeopathy for centuries, as well as Mona Lisa's trajectory of magnetism over people, which made it become the most famous painting of mankind. Quantum theory brings elements that can fundamentally be connected with phenomena applied with living beings already observed.

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“…Femtosecond laser (FSL) devices are rapidly emerging as unmatched tools for clinical optical therapeutics with respect to their precision and ability to generate therapeutic effects with substantially less energy [1][2][3][4][5][6]. The large impact that this advanced technology is having on the medical field is exemplified by its use in several of the most commonly performed surgical procedures in the world, specifically, LASIK, cataract surgery, and corneal transplantation [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of therapeutic femtosecond laser pulse energy, repetition rate, and numerical aperture on laser-induced second and third harmonic generation in corneal tissue

Calhoun

Ilev

2015

Lasers Med Sci

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Clinical therapy incorporating femtosecond laser (FSL) devices is a quickly growing field in modern biomedical technology due to their precision and ability to generate therapeutic effects with substantially less laser pulse energy. FSLs have the potential to produce nonlinear optical effects such as harmonic generation (HG), especially in tissues with significant nonlinear susceptibilities such as the cornea. HG in corneal tissue has been demonstrated in nonlinear harmonic microscopy using low-power FSLs. Furthermore, the wavelength ranges of harmonic spectral emissions generated in corneal tissues are known to be phototoxic above certain intensities. We have investigated how the critical FSL parameters pulse energy, pulse repetition rate, and numerical aperture influence both second (SHG) and third harmonic generation (THG) in corneal tissue. Experimental results demonstrated corresponding increases in HG intensity with increasing repetition rate and numerical aperture. HG duration decreased with increasing repetition rate and pulse energy. The data also demonstrated a significant difference in HG between FSL parameters representing the two most common classes of FSL therapeutic devices.

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Femtosecond laser ablation on dental hard tissues—Analysis of ablated profile near an interface using local effective intensity

Cited by 17 publications

References 34 publications

Using Femtosecond Laser Light-Activated Materials: The Biomimetic Dentin Remineralization Was Monitored by Laser-Induced Breakdown Spectroscopy

Using Femtosecond Laser Light-Activated Materials: The Biomimetic Dentin Remineralization Was Monitored by Laser-Induced Breakdown Spectroscopy

La Gioconda Effect and Self-Organizing Factors of Biofield

Effect of therapeutic femtosecond laser pulse energy, repetition rate, and numerical aperture on laser-induced second and third harmonic generation in corneal tissue

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