Dr. Vitor Hugo Panhóca Profile

Dr. Vitor Hugo Panhóca

at Univ de São Paulo

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Publications (6)

Proceedings Article | 13 March 2024 Presentation + Paper

Photobiomodulation therapy for the management of oral mucositis: a clinical case

Marcelo Saito Nogueira, Carolina Almeida Gianini, Raissa Biason Pereira, Gabriel Silvani, Vanderlei Salvador Bagnato, Vitor Hugo Panhóca

Proceedings Volume 12818, 1281805 (2024) https://doi.org/10.1117/12.3003713

KEYWORDS: Laser therapeutics, Radiotherapy, Physics, Neck, Light sources and illumination, Infrared radiation, Head, Chemotherapy, Tumors

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Proceedings Article | 14 March 2023 Presentation + Paper

Application of low-level laser therapy in trigeminal neuralgia: a clinical case

Laís Tatiane Ferreira, Viviane Brocca Souza, Simone Aparecida Ferreira, Gabriely Simão, Antonio Eduardo Aquino, Marcelo Saito Nogueira, Vanderlei Salvador Bagnato, Vitor Hugo Panhóca

Proceedings Volume 12354, 123540H (2023) https://doi.org/10.1117/12.2650557

KEYWORDS: Nerve, Biomedical applications, Therapeutics, Laser therapeutics, Physics, Infrared radiation, Phosphates, Nervous system, Surface plasmons, Inflammation, Phototherapy, Low level phototherapy, Neurological disorders, Photochemistry

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Proceedings Article | 4 March 2022 Presentation + Paper

Effectiveness of whitening treatments employing violet illumination alone or combined with bleaching agents

Marcelo Saito Nogueira, Vanderlei Salvador Bagnato, Vitor Hugo Panhoca

Proceedings Volume 11942, 1194205 (2022) https://doi.org/10.1117/12.2610551

KEYWORDS: Teeth, Hydrogen, Minerals, Safety, Manufacturing, Visible radiation, Surface plasmons, Physics, Natural surfaces, Excel

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Tooth whitening has grown as one of the most requested dental procedures as the public continuously demands whiter smiles for appearance enhancement. This demand resulted in many options of home-based products (toothpastes, films, gels) and in-office-based products based on concentrated bleaching agents (typically hydrogen peroxide and carbamide peroxide) to be applied under professional supervision. However, protocols involving bleaching agents may increase tooth demineralization, tooth-surface roughening/softening, as well as degradation of dental restorations. Violet illumination alone has been proposed as an alternative to reduce tooth sensitivity while keeping desired whitening effects. In this study, we assessed the effectiveness of whitening treatments using violet illumination (VI) alone or combined with 35% hydrogen peroxide (HP) gel, as well as cleaning teeth with and without mineral oil. This assessment was performed by calculating whiteness and yellowness indexes based on the color change for the experimental groups: control, VI alone (VI group), VI with 35% HP gel (VI + HP group), violet illumination without 35% HP gel and cleaned with mineral oil before washing (VI + HP + oil group). All procedures were performed in 16 bovine teeth (1) stored in 5% thymol solution immediately after extraction, (2) subsequently cleaned and (3) stained with instant coffee solution for 24 hours (except by the control group). Our results suggested that the VI + gel whitening treatment was able to completely restore the teeth whiteness while lowering its yellowness by 31.2% compared to the control group. The VI + oil treatment was 3.7 times more effective in increasing whiteness and decrease yellowness compared to VI treatment. The performance of whitening treatments could potentially be increased by cleaning the tooth surface with mineral oil. The VI + gel treatment should be recommended against coffee stains and potentially investigated for stain types in future research.

Proceedings Article | 31 March 2020 Paper

Calculation of whiteness and yellowness indexes using colorimetric and photographic methods for tooth shade evaluation

Marcelo Saito Nogueira, Vanderlei Salvador Bagnato, Vitor Hugo Panhóca

Proceedings Volume 11238, 112381H (2020) https://doi.org/10.1117/12.2546999

KEYWORDS: Teeth, Photography, Visualization, Luminescence, Digital photography, Digital cameras, Hydrogen, Fluorescence spectroscopy, In vitro testing, Spectrophotometry

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Proceedings Article | 31 March 2020 Paper

Characterization of teeth fluorescence properties due to coffee pigmentation: towards optimization of quantitative light-induced fluorescence for tooth color assessment

Marcelo Saito Nogueira, Vanderlei Salvador Bagnato, Vitor Hugo Panhóca

Proceedings Volume 11238, 112381G (2020) https://doi.org/10.1117/12.2546835

KEYWORDS: Luminescence, Teeth, Fluorescence spectroscopy, Signal attenuation, Spectroscopy, Tissues, Absorption, Skin, Biomedical optics, Reflectivity

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Proceedings Article | 1 March 2019 Paper

Fluorescence spectroscopy analysis of light-induced tooth whitening

Marcelo Saito Nogueira, Vitor Hugo Panhóca, Vanderlei Salvador Bagnato

Proceedings Volume 10876, 108761I (2019) https://doi.org/10.1117/12.2507665

KEYWORDS: Teeth, Luminescence, Light emitting diodes, Fluorescence spectroscopy, Tissues, LED lighting, Reflectivity, Surface plasmons, Spectroscopy, Visual analytics

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