Most of the dental materials available on market are still based traditional monomers such as bisphenol A-glycidyl methacrylate (Bis-GMA), urethane dimethacrylate (UDMA), triethyleneglycol (TEGDMA), and ethoxylated bisphenol-A (Bis-EMA). The interactions that arise in monomer mixture characteristics resulting polymer network most important factors, which define final properties materials. use three different proper proportions may create a strong matrix. In this paper, fourteen resin...

Bisphenol A-glycidyl methacrylate (bis-GMA) and urethane dimethacrylate (UDMA) are usually combined with low-viscosity monomers to obtain more desirable viscosity, handling characteristics general properties. The present study determined the flexural strength (FS), modulus (FM), diametral tensile (DTS), hardness (HV) of five matrices composites based on these resins. polymerization shrinkage stress (PSS) was also studied for composites. polymer were formed using bis-GMA UDMA. TEGDMA, HEMA...

Custom mouthguards are used in various sports disciplines as a protection for teeth, temporomandibular joints, and soft tissues of the oral cavity from impact forces. The purpose this research was to evaluate mechanical properties flexible polymeric 3D-printable materials select material with most favourable physical making intraoral protectors. Four were selected evaluation: IMPRIMO LC IBT (Scheu-Dental, Iserlohn, Germany), Keyortho (EnvisionTEC, Gladbeck, (Formlabs, Somerville, MA, USA),...

The aim of this study was to compare two testing methodologies employed for assessing the polymerization shrinkage stress dental resin composites. Ten commercial composites were investigated (EverX Posterior & Flow; G-ænial Anterior, Posterior, A'CHORD Universal Injectable; Filtek One Bulk Fill Restorative; SDR flow+ and Aura Fill). Photoelastic contraction forces measurement methods performed. slope linear trendline C-factor specimens calculated. values (range between: 6.4–13.4 MPa)...

Resin matrix dental materials undergo contraction and expansion changes due to polymerization water absorption. Both phenomena deform resin-dentin bonding influence the stress state in restored tooth structure two opposite directions. The study tested three composite resin cements (Cement-It, NX3, Variolink Esthetic DC), adhesive (Estecem, Multilink Automix, Panavia 2.0), seven self-adhesive (Breeze, Calibra Universal, MaxCem Elite Chroma, SA Cement Plus, RelyX U200, SmartCem 2, SpeedCEM...

The contraction stress generated during the photopolymerization of resin dental composites is major disadvantage. water sorption in oral environment should counteract stress. purpose was to evaluate influence composite materials on polymerization shrinkage at restoration-tooth interface. following were tested: Filtek Ultimate, Gradia Direct LoFlo, Heliomolar Flow, Tetric EvoCeram, EvoCeram Bulk Fill, EvoFlow, EvoFlow X-tra Base, Venus BulkFil, and Ceram.X One. measured immediately after...

Contemporary self-etch and multi-mode adhesives were introduced to ensure a fast reliable bonding procedure. Yet, in terms of bond strength stability they failed perform as well two-bottle, etch-and-rinse adhesives, which remain the gold standard durability. The purpose this study was assess shear (SBS) dental dentin with different application protocols. Two (Adper Easy One Xeno V) two (Single Bond Universal Prime&Bond Select) used study. highest SBS obtained for Single applied three layers,...

In restorative dentistry, there are no standardized in vitro accelerated aging methods to evaluate the long-term stability of dental composites. Current research aimed at extending clinical success restorations emphasizes need for post-aging evaluation. This study represents final stage assessing three selected protocols that utilize a 0.1 M sodium hydroxide solution as primary agent accelerate degradation processes. Twelve resin-based composites, categorized into five types, were evaluated...

Abstract Aim of the study was to evaluate influence filler amounts on mechanical properties and contraction stress light-curing experimental composite. Hardness, flexural strength, diametral tensile strength material filled with 40, 50 or 60 wt. % silanized silica were tested. The measured after 24 h by means photoelastic study. addition 40-60 composite caused significant increase in hardness, Young’s modulus strength. DTS , incorporating into polymer matrix, valued at ~26 MPa. containing 40...

The clinical performance of a dental restoration is strongly influenced by the complex and dynamically-changing oral environment; however, no standard procedure exists to evaluate this lifetime. This research provides an in-depth analysis effect different aging procedures on flexural strength (FS), diametral tensile (DTS) hardness (HV) selected materials (Resin F, Flow-Art Arkon). Material structure was evaluated scanning electron microscopy. It found that each protocol had some influence...

Due to its unique properties, zirconia is increasingly being used in dentistry, but surface preparation for bonding difficult because of polycrystalline structure. This study aimed determine the effect a new etching technique (Zircos-E) on Ceramill Zi (Amann Girrbach). The and use primers (Monobond Plus MKZ Primer) bond strength with resin cement (NX3) was assessed. Shear evaluated after storage water 24 h thermal aging (5000 thermocycling at 5 °C/55 °C). A scanning electron microscope...

The durability and performance of dental composites are essential for ensuring long-lasting restorations. However, there is a lack standardized procedure evaluating the lifespan materials. Our proposal assumed that materials should be tested under aggressive aging conditions to accelerate materials’ degradation in vitro such an approach simulate prolonged material usage oral cavity. A comprehensive examination impacts three methodologies on various mechanical properties, including flexural...

Ion-releasing polymeric restorative materials seem to be promising solutions, due their possible anticaries effect. However, acid functional groups (monomers) and glass filler increase hydrophilicity and, supposedly, water sorption. The purpose of the study was evaluate influence sorption on stress state at restoration-tooth interface. Beautifil Bulk Fill Flow, Flow Plus F00, F02, Dyract eXtra, Compoglass Ionosit, Glasiosite, TwinkiStar, Ionolux Fuji II LC were used for study. measured using...

Aim of the study was to evaluate mechanical properties light-curing composite materials modified with addition calcium fluoride. The used one experimental material (ECM) and commercially available flowable (FA) that were 0.5–5.0 wt% anhydrous Morphology samples uniformity CaF 2 distribution analyzed using Scanning Electron Microscopy (SEM) Energy Dispersive Spectroscopy (EDS). Mechanical tested after 24-hour storage specimens in dry or wet conditions. Stored ECM enriched 0.5–1.0 showed...

Dual-curing composites have a wide spectrum of use in practice (rebuilding, reconstruction, and luting). The characterization this type material comparative study selected mechanical properties with light-cured materials were carried out for paper. In study, we used six dual-cure system—Bulk EZ, Fill-Up!, StarFill 2B, Rebilda DC, MultiCore Flow, Activa Bioactive-Restorative—and three materials—Filtek Bulk Fill Posterior, Charisma Classic, G-aenial Universal Flo. conditioned 24 h water at 37...

The successful restoration of teeth requires a good connection between the inlay and natural tissue. A strong bond may improve retention reinforce tooth structure. purpose this study was to evaluate influence cement layer thickness on contraction stress generated during photopolymerization, determine changes in state occurring aging water (over 84 days). Two cements were used: resin composite (NX3) self-adhesive (Maxcem Elite Chroma). cylindrical sample made CuZn alloy used imitate inlay....

Contemporary adhesives use etch-and-rinse, self-etch, and multimode adhesive strategies. Simplified universal present lower bond strength to dentin than conventional, two-bottle etch-and-rinse adhesives. The purpose of this study was evaluate bonding performance simplified after modifying their application protocol (multiplying applications extending time). Adhesive layer thickness (ALT) shear (SBS), as well the correlation between these parameters calculated. Two (Single Bond Universal...

Materials with potential use as dental restoration should be evaluated in an aggressive environment. Such accelerated aging is widely used other industries and allows the assessment of service life. In presented study, three neat resins (UDMA/Bis-GMA/TEGDMA 70/10/20 wt.%, UDMA/Bis-GMA/TEGDMA 40/40/20 wt.% UDMA/Bis-EMA/TEGDMA wt.%) composites based on these matrices were tested before after protocols (I-7500 cycles, 5 °C 55 °C, water 7 days, 60 0.1 M NaOH; II-5 NaOH). Flexural strength (FS),...

Due to the questionable durability of dental restorations, there is a need increase lifetime composite restoration. The present study used diethylene glycol monomethacrylate/4,4′-methylenebis(cyclohexyl isocyanate) (DEGMMA/CHMDI), monomethacrylate/isophorone diisocyanate (DEGMMA/IPDI) monomers, and bis(2,6-diisopropylphenyl)carbodiimide (CHINOX SA-1) as modifiers polymer matrix (40 wt% urethane dimethacrylate (UDMA), 40 bisphenol A ethoxylateddimethacrylate (bis-EMA), 20 triethyleneglycol...

Background. MTA cannot be used as a single restorative material due to poor esthetics and mechanical properties. Resin-based composite is often placed on top of MTA. Optimal time doing that the most effective bonding strategy have not been clearly determined.Objectives. The aim study was evaluate bond strength at various intervals with different adhesive strategies.Material Methods. Composite bonded after intervals: directly placement (group I), 24 h II), 72 III). Each group divided into 2...

StreszczenieWprowadzenie.Tworzywo akrylowe jest materiałem powszechnie stosowanym w stomatologii,