Calcium phosphate nanoparticles functionalized with a dimethacrylate monomer

Rodrigues, Marcela Charantola; Hewer, Thiago L.R.; Brito, Giancarlo Espósito de Souza; Arana-Chavez, Victor E.; Braga, Roberto Ruggiero

doi:10.1016/j.msec.2014.08.066

Cited by 33 publications

(34 citation statements)

References 32 publications

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“…Besides, the literature advocates particle silanization because the presence of silane produces interaction between inorganic and organic matrixes and uniform stress distribution (19). Silanization prevents cluster formation in the adhesive layer and compromise of the cohesive strength of adhesive systems (19). This is why this study included an experimental group with silanized NbG micro-filler.…”

Section: Introductionmentioning

confidence: 99%

Adhesives Doped with Bioactive Niobophosphate Micro-Filler: Degree of Conversion and Microtensile Bond Strength

et al. 2016

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To evaluate the effect of incorporating niobium phosphate bioactive glass (NbG) into commercial etch-and-rinse adhesive systems, with and without silane, on their degree of conversion (DC) (%) and microtensile bond strength (μTBS). The NbG micro-filler was added to two etch-and-rinse adhesive systems: One Step (OS) and Prime & Bond (PB) at 40% concentration. The following groups were formed: control without glass addition OS; addition of unsilanized NbG (OSNbG); addition of silanized NbG (OSNbGS); control without glass PB; addition of unsilanized NbG (PBNbG); addition of silanized NbG (PBNbGS). The DC was determined using total Fourier spectroscopy reflection (FTIR/ATR). For μTBS testing, 48 human third molars (n=8) were restored and sliced to obtain specimens (0.8 mm2) and they were tested at two different time intervals: immediately and after 6 months. The fracture mode was evaluated with a stereoscopic loupe (40×) and by scanning electron microscopy (SEM). The data were subjected to ANOVA and Tukey tests (a=0.05). NbG addition did not compromise the adhesive system DC values (p>0.05). Furthermore, the NbG added to the adhesive systems did not affect μTBS values (p>0.05). Fracture occurred predominantly at the dentin-adhesive interface. NbG bioactive glass did not affect the DC or microtensile bond strength results.

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Section: Introductionmentioning

confidence: 99%

Adhesives Doped with Bioactive Niobophosphate Micro-Filler: Degree of Conversion and Microtensile Bond Strength

et al. 2016

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“…82 Recently, the synthesis of TEGDMA-functionalized DCPD particles was described. 83 TEGDMA is capable of bonding to Ca 2+ via ion-dipole interactions with the oxygen atoms from the ethylene glycol groups. The incorporation of 20 vol% of these particles in a BisGMA/TEGDMA resin resulted in a 32% increase in flexural strength in comparison to the material containing non-functionalized particles.…”

Section: Strategy 3a: Remineralizing Compositesmentioning

confidence: 99%

Trends in restorative composites research: what is in the future?

et al. 2017

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Clinical trials have identified secondary caries and bulk fracture as the main causes for composite restoration failure. As a measure to avoid frequent reinterventions for restoration replacement, composites with some sort of defense mechanism against biofilm formation and demineralization, as well as materials with lower susceptibility to crack propagation are necessary. Also, the restorative procedure with composites are very time-consuming and technically demanding, particularly concerning the application of the adhesive system. Therefore, together with bulk-fill composites, self-adhesive restorative composites could reduce operator error and chairside time. This literature review describes the current stage of development of remineralizing, antibacterial and self-healing composites. Also, an overview of the research on fiber-reinforced composites and self-adhesive composites, both introduced for clinical use in recent years, is presented.

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“…Uma forma de se contornar estes problemas é modificar a superfície das partículas com o uso de agentes funcionalizantes, processo que reduziria a aglomeração e permitiria o estabelecimento de uma interface mais resistente entre as partículas e a matriz resinosa (Antonucci, Liu et al 2007, Rodrigues, Hewer et al 2014. Por exemplo, ácidos carboxílicos foram utilizados para funcionalizar partículas de hidroxiapatita nanométricas (50-100 nm) e micrométricas (1-5 µm).…”

Section: Introductionunclassified

“…Sua característica de ácido fraco permite o estabelecimento de ligações íon-dipolo entre os átomos de oxigênio dos grupos etileno glicol (-O-CH2-CH2-) do TEGDMA e os íons cálcio do DCPD Kihara 1987, Morra 1993). Além disso o grupo vinila do TEGDMA pode co-polimerizar com os monômeros dimetacrilato da matriz orgânica (Rodrigues, Hewer et al 2014).…”

Section: Introductionunclassified

Desenvolvimento de partículas de fosfato de cálcio funcionalizadas para aplicação em compósitos resinosos de uso odontológico

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Calcium phosphate nanoparticles functionalized with a dimethacrylate monomer

Cited by 33 publications

References 32 publications

Adhesives Doped with Bioactive Niobophosphate Micro-Filler: Degree of Conversion and Microtensile Bond Strength

Adhesives Doped with Bioactive Niobophosphate Micro-Filler: Degree of Conversion and Microtensile Bond Strength

Trends in restorative composites research: what is in the future?

Desenvolvimento de partículas de fosfato de cálcio funcionalizadas para aplicação em compósitos resinosos de uso odontológico

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