Diffusion and solubility of commercial poly(methyl methacrylate) denture base material modified with dimethyl itaconate and di-n-butyl itaconate during water absorption/desorption cycles

2012 ◽  
Vol 61 (8) ◽  
pp. 1272-1278 ◽  
Author(s):  
Pavle Spasojević ◽  
Dragoslav Stamenković ◽  
Rada Pjanović ◽  
Nevenka Bošković-Vragolović ◽  
Jelena Dolić ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Water Absorption ◽  
Base Material ◽  
Denture Base ◽  
Poly Methyl Methacrylate ◽  
Dimethyl Itaconate

scholarly journals Heat-cured poly(methyl methacrylate) resin incorporated with different food preservatives as an anti-microbial denture base material

2020 ◽  
Author(s):  
Montri Ratanajanchai ◽  
Widchaya Kanchanavasita ◽  
Kallaya Suputtamongkol ◽  
Amonrat Wonglamsam ◽  
Sirinporn Thamapipol ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Base Material ◽  
Food Preservatives ◽  
Denture Base ◽  
Poly Methyl Methacrylate

scholarly journals Effect of Antibacterial Silver-Releasing Filler on the Physicochemical Properties of Poly(Methyl Methacrylate) Denture Base Material

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4146 ◽  
Author(s):  
Grzegorz Chladek ◽  
Katarzyna Pakieła ◽  
Wojciech Pakieła ◽  
Jarosław Żmudzki ◽  
Marcin Adamiak ◽  
...  
Keyword(s):  
Impact Strength ◽  
Flexural Strength ◽  
Methyl Methacrylate ◽  
Flexural Modulus ◽  
Base Material ◽  
Distilled Water ◽  
Denture Base ◽  
Inorganic Particles ◽  
Poly Methyl Methacrylate ◽  
Enhanced Solubility

Colonization of polymeric dental prosthetic materials by yeast-like fungi and the association of these microorganisms with complications occurring during prosthetic treatment are important clinical problems. In previously presented research, submicron inorganic particles of silver sodium hydrogen zirconium phosphate (S–P) were introduced into poly(methyl methacrylate) (PMMA) denture base material which allowed for obtaining the antimicrobial effect during a 90 day experiment. The aim of the present study was to investigate the flexural strength, impact strength, hardness, wear resistance, sorption, and solubility during three months of storage in distilled water. With increasing S–P concentration after 2 days of conditioning in distilled water, reduced values of flexural strength (107–72 MPa), impact strength (18.4–5.5 MPa) as well as enhanced solubility (0.95–1.49 µg/mm3) were registered, but they were at acceptable levels, and the sorption was stable. Favorable changes included increased hardness (198–238 MPa), flexural modulus (2.9–3.3 GPa), and decreased volume loss during wear test (2.9–0.2 mm3). The percentage changes of the analyzed properties during the 90 days of storage in distilled water were similar for all materials.

scholarly journals The Mechanical Properties of a Poly(methyl methacrylate) Denture Base Material Modified with Dimethyl Itaconate and Di-n-butyl Itaconate

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Pavle Spasojevic ◽  
Milorad Zrilic ◽  
Vesna Panic ◽  
Dragoslav Stamenkovic ◽  
Sanja Seslija ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Surface Hardness ◽  
Base Material ◽  
Dynamic Mechanical Properties ◽  
Denture Base ◽  
Mean Values ◽  
Poly Methyl Methacrylate ◽  
Base Materials ◽  
Wide Range

This study investigates a wide range of clinically relevant mechanical properties of poly(methyl methacrylate) (PMMA) denture base materials modified with di-methyl itaconate (DMI) and di-n-butyl itaconate (DBI) in order to compare them to a commercial PMMA denture base material. The commercial denture base formulation was modified with DMI and DBI by replacing up to 10 wt% of methyl methacrylate (MMA) monomer. The specimens were prepared by standard bath curing process. The influence of the itaconate content on hardness, impact strength, tensile, and thermal and dynamic mechanical properties was investigated. It is found that the addition of di-n-alkyl itaconates gives homogenous blends that show decreased glass transition temperature, as well as decrease in storage modulus, ultimate tensile strength, and impact fracture resistance with increase in the itaconate content. The mean values of surface hardness show no significant change with the addition of itaconates. The magnitude of the measured values indicates that the poly(methyl methacrylate) (PMMA) denture base material modified with itaconates could be developed into a less toxic, more environmentally and patient friendly product than commercial pure PMMA denture base material.

scholarly journals Effect of nano- and micro-alumina fillers on some properties of poly(methyl methacrylate) denture base composites

2018 ◽  
Vol 83 (1) ◽  
pp. 75-91 ◽  
Author(s):  
Fathie Kundie ◽  
Che Azhari ◽  
Zainal Ahmad
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Fracture Toughness ◽  
Methyl Methacrylate ◽  
Water Absorption ◽  
Nano Particles ◽  
Nano Composites ◽  
Al2o3 Nanoparticles ◽  
Denture Base ◽  
Poly Methyl Methacrylate

This research investigated the effects of alumina (Al2O3) micro- and nano-particles on poly(methyl methacrylate) (PMMA) denture base. Al2O3 was surface treated using (3-methacryloxypropyl)trimethoxysilane (?-MPS), added to methyl methacrylate (MMA), and mixed with PMMA powder. The filler volume fractions in the micro-composites were 0.5, 1, 2, 5 and 7 wt. %, whereas those in the nano-composites were 0.13, 0.25, 0.5, 1, 2 and 5 wt. %. The treated fillers were examined using Fourier transform infrared spectroscopy (FTIR). The influence of filler size and loading on mechanical properties was studied using fracture toughness and flexural tests. The thermal stability of the PMMA/Al2O3 composites was investigated using thermogravimetric analysis (TGA). In addition, the water absorption and solubility characteristic of the prepared composites was also investigated. The FTIR spectra showed new absorption bands, indicating the occurrence of surface modifications. Both micro- and nanoscale particles showed increased fracture toughness. The maximum value of 2.02 MPa?m1/2 was achieved with the addition of 0.5 wt. % nano-Al2O3, which accounts for a 39 % increase. In contrast to the flexural strength, the flexural modulus improved with increasing filler content. The micro-composites showed higher thermal stability than nano-composites. The water absorption and solubility of the prepared composites were slightly higher than those of the control. The use of low concentrations of Al2O3 nanoparticles may be of considerable interest in future studies to improve the mechanical properties of PMMA denture base.

Poly(methyl methacrylate) denture base composites enhancement by various combinations of nitrile butadiene rubber/treated ceramic fillers

2015 ◽  
Vol 30 (8) ◽  
pp. 1069-1090 ◽  
Author(s):  
AO Alhareb ◽  
HBM Akil ◽  
ZAB Ahmad
Keyword(s):  
Methyl Methacrylate ◽  
Base Material ◽  
Butadiene Rubber ◽  
Stabilized Zirconia ◽  
Denture Base ◽  
X Ray ◽  
Poly Methyl Methacrylate ◽  
Nitrile Butadiene Rubber ◽  
Ceramic Fillers ◽  
The Impact

Nitrile butadiene rubber (NBR) particles as impact modifier mixed with treated ceramic fillers (aluminum oxide, yttria-stabilized zirconia, and silicon dioxide) were used to reinforce poly(methyl methacrylate) (PMMA) denture base material. The powder components are PMMA, benzoyl peroxide, NBR (5, 7.5, and 10 wt%), and ceramic fillers (5 wt%) treated with silane. The liquid components are 90% methyl methacrylate and 10% ethylene glycol dimethacryate. Fourier transform infrared spectroscopy and energy dispersive X-ray spectroscopy analyses confirmed that the ceramic fillers were successful. The morphology of fracture surfaces of specimens was characterized using field emission scanning electron microscopy. The impact strength (IS) and fracture toughness ( KIC) improved significantly. IS increased to 56% (8.26 kJ m−2) and 73% (2.77 MPa m1/2) for KIC when compared with unreinforced PMMA matrix. Statistical analyses of data results were significantly improved ( p < 0.005). PMMA denture base reinforced by NBR particles mixed with treated ceramic fillers are ideally suited for dentistry applications with the ability to withstand high mastication forces.

scholarly journals Effect of Storage in Distilled Water for Three Months on the Antimicrobial Properties of Poly(methyl methacrylate) Denture Base Material Doped with Inorganic Filler

Materials ◽  
2016 ◽  
Vol 9 (5) ◽  
pp. 328 ◽  
Author(s):  
Grzegorz Chladek ◽  
Katarzyna Basa ◽  
Anna Mertas ◽  
Wojciech Pakieła ◽  
Jarosław Żmudzki ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Antimicrobial Properties ◽  
Base Material ◽  
Inorganic Filler ◽  
Distilled Water ◽  
Denture Base ◽  
Poly Methyl Methacrylate

scholarly journals Comparison Study on the Influence of Al2O3 Nanoparticle Size and Ternary Hybrid on Several Properties of a PMMA Denture Composite

2021 ◽  
Vol 58 (2) ◽  
pp. 119-129
Author(s):  
Kamel Earar ◽  
Oleg Solomon ◽  
Gabi Topor ◽  
Iulian Constantin ◽  
Adrian Beznea ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Water Absorption ◽  
Low Cost ◽  
Base Material ◽  
Polymeric Materials ◽  
Ease Of Use ◽  
Composite Resins ◽  
Resin Matrix ◽  
Denture Base

In esthetic restorative dentistry, resin composites are generally encountered. Because of their excellent biocompatibility, lack of taste, odour, tissue discomfort, and toxicity, insolubility in body fluids, ease of use, good clinical/ aesthetic properties, stable colours, optical characteristics, efficient pigmentation, low cost, and repairability, they are becoming more common. Currently used composite resins have some flaws, particularly inconsistent mechanical properties. For a long time, particles of various sizes have been used as fillers to enhance these properties. In prosthodontics, poly(methyl methacrylate) (PMMA) is commonly used as a dental base material. It does, nevertheless, have several weaknesses, including low strength and weak thermal properties. The effects of different sizes of alumina (Al2O3) particles on the poly(methyl ethacrylate) (PMMA) denture base were determined in this experiment. PMMA powder was blended with Al2O3 added to methyl methacrylate (MMA).For PMMA polymeric materials strengthened with Al2O3 (40 nm, 140 nm and 0.3-0.8 μm) in various concentrations, the mechanical properties were studied.Also, the synergetic influence of the three nanoparticle sizes in the resin matrix was studied.Furthermore, thermogravimetric (TGA) analysis and water absorption and solubility characteristics of the composites prepared were also examined. Among the most significant properties to be obtained for good denture materials is high mechanic properties, water absorption and solubility, since they have different attributes in the aqueous condition of the oral cavity. Results showed clear properties optimization, especially for the size-hybrid alumina composites.

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