The present study aimed to assess the eighteen month follow-up patient-centered outcomes of a simple and predictable protocol for 3D-printed functional complete dentures manufactured using an improved poly(methyl methacrylate) (PMMA)–nanoTiO2. A detailed morphological structural characterization PMMA–TiO2 nanocomposite, SEM, EDX, XRD, AFM, after 3D-printing procedure post-wearing micro-CT, was also performed. Methods: total 35 fully edentulous patients were enrolled in this prospective...

The preparation of membranes from polymer solutions by the phase inversion method, immersion—precipitation technique has proved since beginning obtaining technological most versatile and simple possibility to create polymeric membrane nanostructures. Classically, involves four essential steps: Preparation a solution in desired solvent, formation film on flat support, immersion coagulation bath containing solvents, conditioning. All stages are important for prepared membrane’s nanostructure...

The present paper synthesized, characterized, and evaluated the performance of novel biopolymeric membrane enriched with cellulose acetate chitosan (CHI)-silver (Ag) ions in order to remove iron ion from synthetic wastewater using a new electrodialysis system. prepared membranes were characterized by Fourier Transforms Infrared Spectroscopy-Attenuated Total Reflection (FTIR-ATR), Thermal Gravimetric Analysis (TGA) Differential (DSC), contact angle measurements, microscopy studies,...

The present study introduces the process performances of nitrophenols pertraction using new liquid supported membranes under action a magnetic field. membrane system is based on dispersion silver–iron oxide nanoparticles in n-alcohols hollow microporous polypropylene fibers. iron oxide–silver are obtained directly through cyclic voltammetry electrolysis run presence soluble silver complexes ([AgCl2]−; [Ag(S2O3)2]3−; [Ag(NH3)2]+) and pure electrodes. nanostructured particles characterized...

The polymer-inorganic nanoparticles composite membranes are the latest solutions for multiple physicochemical resistance and selectivity requirements of membrane processes. This paper presents production polysulfone-silica microfiber grafted with titanium dioxide (PSf-SiO2-TiO2) membranes. Silica length 150-200 μm diameter 12-15 were nanoparticles, which aggregated as microspheres 1-3 μm, applying sol-gel method. SiO2 microfibers nano-TiO2 used to prepare 12% polysulfone-based nanocomposite...

Background: Knee osteoarthritis (KOA) is a chronic degenerative pathology that associated with multiple risk factors such as age, sex, obesity, or metabolic syndrome (MetS). The present clinical trial aimed to investigate the influence of environment origin, body mass index (BMI), and MetS parameters on KOA differentiated degrees. Methods: 85 patients were admitted for study. presence was investigated using X-rays analysis. Kellgren−Lawrence classification (KL) severity characteristic...

(1) Background: Prosthetically-driven implant positioning is a prerequisite for long-term successful treatment. Transferring the planned position information to clinical setting could be done using either static or dynamic guided techniques. The 3D model of bone and surrounding structures obtained via cone beam computed tomography (CBCT) patient’s oral condition can acquired conventionally then digitalized desktop scanner, partially digital workflow (PDW) digitally with aid an intraoral...

The aim of the present study was to characterize and preliminary assess cytotoxicity genotoxicity different PMMA-TiO2 nanocomposites suitable be used for two-parts stereolithographic complete denture manufacturing. In order improve mechanical antibacterial characteristics materials 3D printing dentures, two matrix consisting in commercially available solutions poly(methyl methacrylate) (PMMA), referred as dent-PMMA respectively base-PMMA, have been doped with amount TiO2 nanoparticles: 0.4,...

The paper presents experimental data obtained in the study of liquid–liquid partition equilibriums biphasic system order to optimize process transport through bulk liquid membranes (triphasic systems). some nitrophenols using chloroform as extraction solvent and membranary solvent, respectively, were studied. influence pH on was investigated. repartition constants pKa values studied calculated. Nitrophenols transferred triphasic from a feed phase with 2, membrane, into receiving 12,...

Abstract There is an increased interest in recycling valuable waste materials for usage procedures with high added values. Silica microparticles are involved the processes of catalysis, separation, immobilization complexants, biologically active compounds, and different nanospecies, responding to restrictive requirements selectivity various chemical biochemical processes. This paper presents surface modification accessible dimensionally controlled recycled silica microfiber titanium dioxide....

The aim of the present study was to evidence improved behavior our modified PMMA-TiO2 nanocomposite material used obtain 3D printed complete dentures. A protocol for long-term rapid prototyping denture manufacturing using material, completely characterized and evaluation clinical performance complications after eighteen months continuous wearing also described. Thirty-five fully edentulous patients were enrolled in this prospective forty-five dentures (31 maxillary 14 mandibular) have been...

The objective of this paper is to present the thermal behavior various PMMA/TiO2 nanocomposite for complete dentures fabrication with 3D printing technology. There have been prepared and thermally characterized polymeric composites varied nanofiller content ranging between 0.2% 2.5% (w/w%). nanocomposites proved a better performance than that pure copolymer PMMA-MMA or PMMA polymer complex matrix. A small difference in glass transition (Tg) temperature all compounds studied was recorded.

(1) Background: The development of a biocompatible material for direct additive manufacturing maxillofacial extraoral prosthesis is still challenging task. aim the present study was to obtain photocurable PDMS, with nano TiO2 inclusions, directly 3D printing extraoral, prosthesis. biocompatibility newly obtained nanocomposite also investigated; (2) Methods: 2.5% (m/m) titania nanoparticles (TiO2) oxide anatase and photoinitiator, benzophenone (BF) 4.5% were added commercially available PDMS...

The aim of the present paper was to highlight individual effects melatonin (MEL) and hyaluronic acid (HA) on periodontal structures repair mechanism investigate a possible synergic effect if each component proposed mixture (MEL-HA) would maintain their specific characteristics, when using booth active principles, for topical application. A comprehensive review recent literature focusing role MEL HA in therapy, as well use both compounds effect, have been conducted. An experimental...

The aim of the present paper was to characterize new pink PMMA doped with 0.4% TiO2 nanoparticles utilized for denture base manufacturing as alternative one-piece, single color material removable denture. structurally characterized through XRD, SEM, EDX, and subsequently by FT-IR Raman spectroscopy. An improvement in thermal stability obtained compared matrix without filler evidenced. All performed structural analyzes are recommending nano-titania an dentures processing.

In this paper, it is studied the influence of TiO2 nanoparticles content (0.2-5% wt:wt) on electrical conductivities and dielectric constants poly (methyl methacrylate) (PMMA) nanocomposites used for 3D printing in dentistry. The films, which have been obtained applying casting method followed by UV exposure, were mounted a four electrodes cell electrochemical a.c. impedance analysis. experimental data showed that both constant conductivity increase with increasing amounts nano-TiO2...

Color stability through wear and time, one of the most important esthetic factor, influencing patient�s acceptance an acrylic removable prosthesis, was investigated in vivo a limited number studies solely on prefabricated denture teeth.The aims present paper were to assess color changes occurred with commercially available PMMA for 3D printing technique, improved by doping titania nanoparticles, evaluate stainability 0.4%TiO2 teeth, wearers, over period year. Ten patients rehabilitated...