The novelty of this study consists in the formulation and characterization three experimental dental composites (PM, P14M, P2S) for cervical lesion restoration compared to commercial Enamel plus HRi® - En (Micerium S.p.A, Avengo, Ge, Italy), G-ænial Anterior® (GC Europe N.V., Leuven, Belgium), Charisma® Ch (Heraeus Kulzer, Berkshire, UK). physio-chemical properties were studied, like degree conversion residual monomers cured samples using FTIR-ATR (attenuated total reflectance) HPLC-UV...

Fly ash-based geopolymers can be considered as a greener alternative to ordinary Portland cement, featuring comparable properties and cost yet with lower CO2 emissions. New wood fiber reinforced geopolymer composites sand addition (WFSGC) have been synthesized at room temperature by mixing powder (fly ash, randomly fiber) sodium silicate hydroxide alkaline activators. WFSGC were cured 90°C for 24 h. The design investigation of based on fix 5 wt.% percentage sand, variable (5, 10, 15, 20, 25,...

Fly ash-based geopolymers represent a new material, which can be considered an alternative to ordinary Portland cement. MiniBars™ are basalt fiber composites, and they were used reinforce the geopolymer matrix for creation of unidirectional reinforced composites (MiniBars™ FRBCs). New materials obtained by incorporating variable amount (0, 12.5, 25, 50, 75 vol.% MiniBars™) in matrix. Geopolymers prepared mixing fly ash powder with Na2SiO3 NaOH as alkaline activators. FRBCs cured at 70 °C 48...

The clinical performances of dental materials depend on their mechanical profiles, determining long-term deformation and wear resistance. This paper describes a study the properties, water absorption morphological properties polymethyl methacrylate (PMMA) resin enriched with graphene-silver nanoparticles (Gr-Ag). Two different concentrations—1 2 wt.%—of Gr-Ag were loaded into PMMA material. For characterization, compression behavior, flexural strength tensile evaluated. Optical microscopy in...

Composites based on polylactic acid (PLA) and copper for food packaging applications were obtained. Copper clusters synthesized in polyethylene glycols 400 600, respectively, using ascorbic as a reducing agent, by reactive milling. characterized Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FT-IR), Ultraviolet-Visible (UV-VIS) spectroscopy. Copper/PLA composites containing Proviplast plasticizer FT-IR spectroscopy, mechanical tests, Differential Calorimetry (DSC),...

Various powders of graphene oxide (GO), GO with silver (GO-Ag) and zinc (GO-ZnO) were obtained. The silanized (3-aminopropyl) triethoxysilane (APTES) aiming to be used, in a future stage, as additives the hydraulic lime mortars composition. characterized by Fourier Transform Infrared Spectrometry (FTIR) Scanning Electron Microscopy (SEM) before after silanization process. GO, GO-Ag, GO-Ag-APTES, GO-ZnO GO-ZnO-APTES also investigated Thermogravimetric Analysis (TG/DTA) Ultraviolet–Visible...

This study aimed to evaluate the micro-nanostructure and color changes of dental enamel after treatment with new gel formulations containing papain or bromelain. Eighty caries-free, extracted human teeth were randomly divided into two groups (n = 40) stained by immersion in either coffee Tedi juice for 4 h daily over five consecutive days. After staining, samples washed stored artificial saliva at 37 °C. The then treated four different whitening gels (GC, G1, G2, Opalescence 15%) daily....

Geopolymer concrete reinforced with MiniBars™ could be an eco-friendly, innovative, durable, high-strength material substitute for common Portland cement in buildings. AR glass fiber composites (AR MiniBars™) (ReforceTech AS, Royken, Norway) 60 mm length were utilized to strengthen the geopolymer matrix fabrication of unidirectional by FRBCs). New FRBCs fabricated adding different amounts (0, 12.5, 25, 50, 75 vol.%) into fly ash paste. Geopolymers obtained combining powder Na2SiO3/NaOH a...

Background: Advancements in therapeutic approaches and standard medical interventions have significantly improved the prognosis of patients with differentiated thyroid cancer. However, uncertainties remain regarding optimal timing protocols for dental implant placement undergoing radioiodine-131 (I-131) therapy. Debates continue about potential effects radiation on osseointegration dynamics viability. This vitro study assessed impact radiodiodine-131 used cancer structure zirconia titanium...

AbstractThe purpose of the present study is to analyze effect new nanofiller type graphene–gold nanoparticles on surface structure and properties some dental nanocomposites based BisGMA/triethyleneglicol dimethacrylate matrix. Materials used in our were three experimental nanocomposites, two them as filler different percent. As reference material, a commercial nanocomposite product named Herculite XRV Ultra was used. FTIR-ATR spectroscopy determine residual double bonds degree conversion...

The main objective of this research is to demonstrate the biocompatibility two experimental graphene dental materials by in vitro and vivo tests for applications dentistry. novel materials, including one restorative composite cement, were subjected cytotoxicity implantation using a rat model non-critical mandibular defect. In induced on human follicle stem cells (restorative composite) dysplastic oral keratinocytes (dental cement) was investigated at 37 °C 24 h. After implantation, 7 weeks,...

(1) Background: This study investigated the influence of Bis-GMA, TEGDMA, UDMA, and two different polyethylene glycol (PEG)-containing, UDMO-based co-monomers on Young’s modulus flexural strength, degree methacrylate C=C double bond conversion residual monomer elution experimental dental resins. (2) Methods: Urethane methacrylate-based was synthesised via a radical chain growth polymerization mechanism using PEG in order to improve mechanical properties. Dental resins were formulated or UDMO...

Among the newest trends in dental composites is use of graphene oxide (GO) nanoparticles to assure better cohesion composite and superior properties. Our research used GO enhance several hydroxyapatite (HA) nanofiller distribution three experimental CC, GS, GZ exposed coffee red wine staining environments. The presence silane A-174 on filler surface was evidenced by FT-IR spectroscopy. Experimental were characterized through color stability after 30 days coffee, sorption solubility distilled...

Considering recent climate changes, special importance is given to any attempt depollute and protect the environment. A circular economy seems be ideal solution for valorization of mineral waste, resulting from various industrial branches, by reintroducing them in process obtaining alternative building materials, more friendly Geopolymers can considered as a promising option compared Portland cement. Information about influence composition precursors, activation system on mechanical...

Poor oral hygiene leads to serious damages of theteeth’s surface enamel such as micro-abrasions and acid erosion. These alterations combined with bacterial plaque result in cavity appearance. Prophylactic measures include various techniques for restoration. Fluorination is one the most important treatments this purpose. Therefore, present research, we investigated classical fluorination treatment compared laser photodynamic performed on human samples poor quality. Three sample groups were...

Food additives are utilized in countless food products available for sale. They enhance or obtain a specific flavor, extend the storage time, desired texture. This paper presents an automatic classification system five based on their absorbance ultraviolet domain. Solutions with different concentrations were created by dissolving measured additive mass into distilled water. The analyzed samples either simple (one solution) mixed (two solutions). substances presented peaks between 190 nm and...

Graphene/TiO2-Ag based composites having various quantities of TiO2-Ag nanoparticles (5, 10 or 15 wt%) were successfully prepared through a facile chemical-thermal route. The morphological and structural characteristics the synthesized materials denoted GTA-5, GTA-10 GTA-15 investigated by TEM, XRD FTIR techniques. used for modification three gold electrodes (Au/GTA-5, Au/GTA-10, Au/GTA-15) which next employed in electrochemical detection degradation amaranth (an azo dye model). electrode...

This study aims to investigate the effect of new natural photosensitizers (PS) (based on oregano essential oil, curcuma extract, and arnica oil) through in vitro cytotoxicity biological tests rat-induced periodontal disease, treated with photodynamic therapy (aPDT). The PS was performed human dental pulp mesenchymal stem cells (dMSCs) keratinocyte (HaCaT) cell lines. Periodontal disease induced by ligation first mandibular molar 25 rats, which were divided into 5 groups: control group,...

The study evaluated the impact of graphene powders used as additives in recipe experimental lime mortar to a mixture ratio 1:2.5 NHL3.5 hydraulic lime:fine sand. content binder, aggregate and water was kept constant, varying only amount type added relation natural NHL3.5. following five types mortars were prepared follows: reference (without additive); containing 1 wt.% GO 5 powder; with mixture: powder functionalized silver nanoparticles fly ash (GO-Ag + GO-fly ash); zinc oxide titanium...

(1) Background: the current study investigated three nanohybrid composites: two commercial products ClearfilMajestyTM (CM) and HarmonizeTM (HU), compared with an experimental product PS2. (2) Methods: Two sample types were molded using Teflon dies. The first type was represented by standard discs (20 mm diameter 2 thickness) (n = 60, 20/each material), used for surface conditioning investigation, specifically roughness monitoring color stability analysis AFM CIELab test, respectively. second...

Dental caries is an avoidable and complex condition impacting billions of individuals worldwide, posing a specific concern among younger generations, despite the progress oral hygiene products. This deterioration occurs due to acid demineralization tooth enamel, leading loss minerals from enamel subsurface. The remineralisation early carious lesions could prevent cavitation teeth. protein amelogenin constitutes 90% total matrix plays key role in bio mineralisation process. aim this study...

Interproximal enamel reduction, also known as stripping, is a common orthodontic procedure that reduces the mesiodistal diameter of teeth, allowing for balance available space in dental arches. The aim this study was to assess surface microhardness resulting from application currently methods interproximal reduction. Forty-two extracted human permanent teeth were divided into six different groups, each subjected therapeutic stripping using various (i.e., diamond burs, abrasive strips 90 μm,...