Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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Naji, M.
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Silva, S.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (16/16 displayed)

  • 2023Transmissive glucose concentration plasmonic Au sensor based on unclad optical fiber3citations
  • 2020Evaluation of the effect of fluorinated tooth bleaching products using polarized Raman microscopy and particle induced gamma-ray emission11citations
  • 2019FUNCTIONAL METAMATERIALS FOR OPTICAL SENSING OF HYDROGENcitations
  • 2018Genotoxicity analysis of different magnetite-based nanoparticles applied in chemical catalysis processescitations
  • 2015Does Electronic Type Matter when Single-Walled Carbon Nanotubes are Used for Electrode Applications?10citations
  • 2015High Quality Carbon Nanotubes on Conductive Substrates Grown at Low Temperatures39citations
  • 2014A novel direct contact method for the assessment of the antimicrobial activity of dental cements5citations
  • 2013Towards the rational design of polymers using molecular simulation: predicting the effect of cure schedule on thermo-mechanical properties for a cycloaliphatic amine-cured epoxy resincitations
  • 2013Towards the rational design of polymers using molecular simulation: Predicting the effect of cure schedule on thermo-mechanical properties for a cycloaliphatic amine-cured epoxy resin14citations
  • 2013A novel direct contact method for the assessment of the antimicrobial activity of dental cements5citations
  • 2012Natural Polymers in Tissue Engineering Applications31citations
  • 2012The origin of the metal enrichment of carbon nanostructures produced by laser ablation of a carbon-nickel target1citations
  • 2012Marine collagen scaffolds crosslinked 'in situ' with genipin for cartilage regenerationcitations
  • 2011Hybridsolar project: hybrid Si-Nanoparticle/polymer layers for solar cell applicationscitations
  • 2008Natural Polymers in Tissue Engineering Applications59citations
  • 2004Formation of three dimensional Ni nanostructures for large area catalystscitations

Places of action

Chart of shared publication
Cunha, C.
1 / 3 shared
Frazao, O.
2 / 57 shared
Novais, Susana
1 / 7 shared
Mendes, Jp
1 / 1 shared
Leitao, C.
1 / 3 shared
Monteiro, Cs
1 / 2 shared
Assuncao, As
1 / 1 shared
Pessanha, Sofia
1 / 13 shared
Manteigas, V.
1 / 1 shared
Jesus, Ap
1 / 1 shared
Mata, A.
1 / 5 shared
Fonseca, M.
1 / 3 shared
Silveira, Jm
1 / 1 shared
Otel, I.
1 / 1 shared
Luis, H.
1 / 1 shared
Guerreiro, A.
1 / 4 shared
Rodrigues, P.
1 / 6 shared
Araujo, Jp
1 / 91 shared
Jorge, Pedro
1 / 4 shared
Lopes, A.
1 / 7 shared
Moraes, Ss
1 / 1 shared
Santos, Jl
1 / 42 shared
Ferreira, Td
1 / 1 shared
Apolinario, A.
1 / 8 shared
Quiterio, P.
1 / 1 shared
Silva, Na
1 / 1 shared
Aguilar, G.
1 / 1 shared
Hierro Rodriguez, A.
1 / 2 shared
Baptista, Jm
1 / 8 shared
Moreira, M. T.
1 / 3 shared
Feijoo, G.
1 / 1 shared
Gamallo, M.
1 / 3 shared
Pintado, M. E.
1 / 2 shared
Sam, Flm
1 / 1 shared
Adikaari, Aadt
2 / 3 shared
Rozanski, Lj
1 / 1 shared
Prabhath, Mrr
1 / 1 shared
Lai, Kt
1 / 1 shared
Jayawardena, Kdgi
2 / 4 shared
Dabera, Gdmr
1 / 1 shared
Ahmad, Muhammad
1 / 23 shared
Anguita, Jose
3 / 4 shared
Carey, James
1 / 4 shared
Chen, J.
1 / 51 shared
Stolojan, Vlad
1 / 17 shared
Corless, T.
1 / 1 shared
Tavaria, F. K.
2 / 2 shared
Madureira, A. R.
2 / 2 shared
Cardelle-Cobas, A.
2 / 3 shared
Pintado, M. M.
2 / 4 shared
Costa, E. M.
2 / 2 shared
Hamerton, Ian
2 / 113 shared
Tang, Winnie
1 / 5 shared
Malafaya, P.
2 / 2 shared
Oliveira, J.
2 / 31 shared
Azevedo, H.
2 / 3 shared
Gomes, M.
2 / 14 shared
Silva, G.
2 / 16 shared
Reis, Rui Luís
3 / 1359 shared
João Mano, R. S.
1 / 1 shared
Henley, Simon
2 / 4 shared
Fryar, J.
1 / 2 shared
Sotelo, C.
1 / 1 shared
Perez-Martin, R.
1 / 1 shared
Mano, J.
2 / 4 shared
Fernandes-Silva, S.
1 / 2 shared
Moreira-Silva, J.
1 / 13 shared
Marques, A.
1 / 8 shared
Silva, T.
1 / 4 shared
Águas, H.
1 / 2 shared
Pereira, L.
1 / 17 shared
Cunha, Mara
1 / 7 shared
Hilliou, L.
1 / 43 shared
Bernardo, Gabriel
1 / 19 shared
Busani, T.
1 / 1 shared
Ram, S.
1 / 19 shared
Torres, V. J. B.
1 / 4 shared
Almeida, Luís De
1 / 4 shared
Cavaleiro, J.
1 / 1 shared
Tomé, J.
1 / 1 shared
Nayak, P. K.
1 / 3 shared
Vicente, A.
1 / 2 shared
Rino, L.
1 / 1 shared
Coutinho, J.
1 / 9 shared
Filonovich, Sergej
1 / 14 shared
Pereira, Ricardo
1 / 7 shared
Wojcik, P. J.
1 / 1 shared
Carvalho, A.
1 / 11 shared
Sousa, R.
1 / 7 shared
Giusca, Ce
1 / 1 shared
Carey, Jd
1 / 8 shared
Mendoza, E.
1 / 5 shared
Chart of publication period
2023
2020
2019
2018
2015
2014
2013
2012
2011
2008
2004

Co-Authors (by relevance)

  • Cunha, C.
  • Frazao, O.
  • Novais, Susana
  • Mendes, Jp
  • Leitao, C.
  • Monteiro, Cs
  • Assuncao, As
  • Pessanha, Sofia
  • Manteigas, V.
  • Jesus, Ap
  • Mata, A.
  • Fonseca, M.
  • Silveira, Jm
  • Otel, I.
  • Luis, H.
  • Guerreiro, A.
  • Rodrigues, P.
  • Araujo, Jp
  • Jorge, Pedro
  • Lopes, A.
  • Moraes, Ss
  • Santos, Jl
  • Ferreira, Td
  • Apolinario, A.
  • Quiterio, P.
  • Silva, Na
  • Aguilar, G.
  • Hierro Rodriguez, A.
  • Baptista, Jm
  • Moreira, M. T.
  • Feijoo, G.
  • Gamallo, M.
  • Pintado, M. E.
  • Sam, Flm
  • Adikaari, Aadt
  • Rozanski, Lj
  • Prabhath, Mrr
  • Lai, Kt
  • Jayawardena, Kdgi
  • Dabera, Gdmr
  • Ahmad, Muhammad
  • Anguita, Jose
  • Carey, James
  • Chen, J.
  • Stolojan, Vlad
  • Corless, T.
  • Tavaria, F. K.
  • Madureira, A. R.
  • Cardelle-Cobas, A.
  • Pintado, M. M.
  • Costa, E. M.
  • Hamerton, Ian
  • Tang, Winnie
  • Malafaya, P.
  • Oliveira, J.
  • Azevedo, H.
  • Gomes, M.
  • Silva, G.
  • Reis, Rui Luís
  • João Mano, R. S.
  • Henley, Simon
  • Fryar, J.
  • Sotelo, C.
  • Perez-Martin, R.
  • Mano, J.
  • Fernandes-Silva, S.
  • Moreira-Silva, J.
  • Marques, A.
  • Silva, T.
  • Águas, H.
  • Pereira, L.
  • Cunha, Mara
  • Hilliou, L.
  • Bernardo, Gabriel
  • Busani, T.
  • Ram, S.
  • Torres, V. J. B.
  • Almeida, Luís De
  • Cavaleiro, J.
  • Tomé, J.
  • Nayak, P. K.
  • Vicente, A.
  • Rino, L.
  • Coutinho, J.
  • Filonovich, Sergej
  • Pereira, Ricardo
  • Wojcik, P. J.
  • Carvalho, A.
  • Sousa, R.
  • Giusca, Ce
  • Carey, Jd
  • Mendoza, E.
OrganizationsLocationPeople

article

Evaluation of the effect of fluorinated tooth bleaching products using polarized Raman microscopy and particle induced gamma-ray emission

  • Silva, S.
  • Pessanha, Sofia
  • Manteigas, V.
  • Jesus, Ap
  • Mata, A.
  • Fonseca, M.
  • Silveira, Jm
  • Otel, I.
  • Luis, H.
Abstract

In this in vitro study, the effect of the application of tooth bleaching products in human enamel was evaluated using polarized Raman microscopy, particle induced gamma-ray emission (PIGE) and Vickers Hardness test. Due to their acidic nature, teeth whitening products are associated with changes in enamel mineralization. Consequently, products have appeared in the market that promote the incorporation of fluorine in order to decrease the solubility of the hydroxyapatite in enamel and prevent demineralization. This way, four commercial products with different active principle concentrations: 16% carbamide peroxide (Opalescence PF (R) and VivaStyle (R)) or 6% hydrogen peroxide (Opalescence Go PF (R) and VivaStyle Paint On (R)) and presence or not of fluorine were compared. The information on the crystalline state of the enamel was provided by the determination of the depolarization ratio of the symmetric stretching band of phosphate (at 959 cm(-1)). Furthermore, the content and uptake of F was evaluated using PIGE in the two fluorinated products as well as in one negative control group. In order to evaluate the microhardness of enamel by means of Vickers test, another group of polished samples was prepared (using Opalescence PF (R)) and evaluated. Conversely to what could be expected, the obtained results determined a statistically significant decrease of depolarization ratio, leading to an increase of mineralization after the application of the bleaching products, except for VivaStyle (R). For this group, no significant variation was obtained before-after treatment, most likely due to the acidity of the product (pH=5.8). Additionally, an increase of concentration of F in the dental tissues was determined for the fluorinated products. On the other hand, enamel polishing, required for the application of the Vickers test, led to increased susceptibility to erosion, resulting in decreased hardness and an increased enamel depolarization rat(i)o.

Topics
  • hardness
  • Hydrogen
  • susceptibility
  • polishing
  • particle-induced gamma-ray emission spectroscopy
  • Raman microscopy