On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

Totu, Eugenia Eftimie; Cristache, Corina Marilena; Voicila, Elena; Oprea, Ovidiu; Agir, Ismail; Tavukcuoglu, Ozlem; Didilescu, Andreea Cristiana

doi:10.37358/mp.17.4.4922

Cited by 19 publications

(33 citation statements)

References 18 publications

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“…The morphological and structural studies presented in this work offer a valuable confirmation of our previous findings [6,7,18] regarding the improved characteristics of the PMMA-TiO 2 nanocomposite.…”

Section: Discussionsupporting

confidence: 85%

“…Dealing with complications is not only an expensive matter but is also inconvenient for the patients. Lately, several studies [7,17] proved that doping the PMMA with an appropriate filler, as TiO 2 nanoparticles could modify the specific properties of polymeric matrix resulting into a composite material with improved functions.…”

Section: Resultsmentioning

confidence: 99%

“…The reagents used in this work are similar to those presented in our previously published paper [7]. The polymer matrix, denoted as PMMA-D, consisting in a mixture of poly(methyl metharcrylate)(PMMA) -methyl methacylate (MMA) and reinforcing additives solution (from EnvisionTEC GmbH, Gladbeck, Germany) has been used throughout experiments, as provided.…”

Section: Experimental Part Reagents and Apparatusmentioning

confidence: 99%

“…In order to avoid the inhomogeneity and local agglomeration of the nanofiller within the PMMA matrix, the titania nanoparticles have been functionalized with methacrylic acid (Aldrich) according to the procedure described in detail in [7]. After functionalization, the nanofiller was carefully mixed with the PMMA-D matrix.…”

Section: Experimental Part Reagents and Apparatusmentioning

confidence: 99%

“…Poly (methyl methacrylate) (PMMA), the material of choice for removable dentures, has been lately investigated and there are studies highlighting the effect of adding nanofillers such as titanium dioxide (TiO 2 ) to improve their specific properties [6]. PMMA-nano TiO 2 composite have shown better thermal behavior [7] in connection with a lower water sorption and solubility [8]. From the mechanical point of view, such composites are characterized by an improved hardness, fracture resistance and/or flexural strength [9].…”

mentioning

confidence: 99%

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Structural Investigations on Poly(methyl methacrylate) Various Composites Used for Stereolithographyc Complete Dentures

Totu¹,

Cristache²,

Işildak³

et al. 2018

Mat.Plast.

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The present paper is focused on analyzing if appropriate adhesion between the polymeric matrix and titania filler nanoparticles is obtained for the PMMA-TiO2 photo-curable dental material, suitable for application in RP - stereolithography (SLA) for complete denture manufacturing. It was found that different amounts, between 0.2% and 2.5 % (w/w%), of added titanium oxide nanoparticles slightly modify the structural behavior of the PMMA polymeric matrix. The material characterization was carried out using FT-IR and microscopy techniques.

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Section: Discussionsupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Experimental Part Reagents and Apparatusmentioning

confidence: 99%

Section: Experimental Part Reagents and Apparatusmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Structural Investigations on Poly(methyl methacrylate) Various Composites Used for Stereolithographyc Complete Dentures

Totu¹,

Cristache²,

Işildak³

et al. 2018

Mat.Plast.

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3D Printing-Processed Polymers for Dental Applications

Cristache

Totu

2020

Reactive and Functional Polymers Volume Three

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Added value recyclability of glass fiber waste as photo-oxidation catalyst for toxic cytostatic micropollutants

Nechifor

Totu

Nechifor

et al. 2020

Sci Rep

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There is an increased interest in recycling valuable waste materials for usage in procedures with high added values. Silica microparticles are involved in the processes of catalysis, separation, immobilization of complexants, biologically active compounds, and different nanospecies, responding to restrictive requirements for selectivity of various chemical and biochemical processes. This paper presents the surface modification of accessible and dimensionally controlled recycled silica microfiber with titanium dioxide. Strong base species in organic solvents: methoxide, ethoxide, propoxide, and potassium butoxide in corresponding alcohol, activated the glass microfibres with 12-13 µm diameter. In the photo-oxidation process of a toxic micro-pollutant, cyclophosphamide, the new composite material successfully proved photocatalytic effectiveness. The present work fulfills simultaneously two specific objectives related to the efforts directed towards a sustainable environment and circular economy: recycling of optical glass microfibers resulted as waste from the industry, and their usage for the photooxidation of highly toxic emerging micro-pollutants. Inorganic-inorganic oxide-type composite materials offer the most interesting technical solutions in many physicochemical processes of bio-degradation, coating, separation, or catalysis 1,2. A particular case is presented by the silicon dioxide-titanium dioxide (TiO 2-SiO 2) composites that combine the distinctive characteristics of the two oxides. Thus, silicon dioxide is a technically-economically accessible material and can be made in the form of spherical particles 3 , nanofibers 4 , nanotubes 5 , or films 6 , thus being used as an active material, adsorbent or support for other materials with higher selectivity 7. Titanium dioxide prepared in predetermined forms: spheres 8 , nanotubes 9 , nano-threads 10 , or films 11 could be used as an adsorbent or covering, but especially like catalytic material 12. Of course, the combination of the two oxides' properties has been used for the most advanced applications: photocatalytic degradation of organic/pharmaceutical pollutants 13 , fuel cells 14 , membrane reactors 15 , bioreactors 16 , advanced separations 17 and clinical devices 18. Environmental researches proved that the widely used cytostatic drug, N, N-bis(2-chloroethyl)-1,3,2-oxazaphosphinan-2-amine 2-oxide known as cyclophosphamide, which is a cyclic amide, produces residues with mutagenic action. Although mainly known as an anticancer drug, cyclophosphamide is also administrated frequently as an anti-inflammatory or immunolytic agent for rheumatoid arthritis 19 , or nephrotic syndrome 20 , systemic lupus erythematosus 21 , or systemic sclerosis lung fibrosis 22. This important cytostatic compound administrated for autoimmune diseases, and cancer chemotherapy, as well as its metabolites, are released into effluents that reach surface and ground waters 23. The cyclophosphamide action through nucleophilic compounds' alkylation and metabolic activation result in dra...

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On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

Cited by 19 publications

References 18 publications

Structural Investigations on Poly(methyl methacrylate) Various Composites Used for Stereolithographyc Complete Dentures

Structural Investigations on Poly(methyl methacrylate) Various Composites Used for Stereolithographyc Complete Dentures

3D Printing-Processed Polymers for Dental Applications

Added value recyclability of glass fiber waste as photo-oxidation catalyst for toxic cytostatic micropollutants

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