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Spot-Bonding and Full-Bonding Techniques for Fiber Reinforced Composite (FRC) and Metallic Retainers
Fiber reinforced Composite (FRC) retainers have been introduced as an aesthetic alternative to conventional metallic splints, but present high rigidity. The purpose of the present investigation was to evaluate bending and ...
Enhancing Mechanical Properties of Glass Ionomer Cements with Basalt Fibers
<p>With the aim to reinforce mechanical properties of glass ionomer cements (GICs), basalt fibers (BF, Ф13.3 μm) with 1 mm and 2 mm length were added into glass powders of commercial self-cure GIC Fuji IX with a series of mass fraction to prepare BF reinforced GICs. Fuji IX without BF was used as control. The influences of BF fibers length and mass fraction on flexural strength (FS), flexural modulus (FM), compressive strength (CS) and fracture toughness (FT) were investigated. The results showed that BF could reinforce mechanical properties of GIC significantly (p < 0.05), and the BF reinforced GIC with 7 wt.% (mass ratio in glass powders of GIC) of 2 mm fibers had the optimal mechanical properties in this research. Water sorption (WS), solubility (SL), and flexural properties after water aging of optimal BF reinforced GIC were then investigated and compared with control GIC. The FS of BF reinforced GIC decreased with the increasing of water aging time (p < 0.05), and became comparable with that of control GIC after 1 month of aging time (p > 0.05), while FMs of BF reinforced GIC and control GIC were comparable with each other (p > 0.05) and had no variation after water aging (p > 0.05). The WS of BF reinforced GIC was higher than that of control GIC (p < 0.05), but there was no significant difference in SL between these two GICs (p > 0.05). In conclusion, BF could be used to reinforce GIC, but the weak interaction between fibers and cement matrix would influence its long-time serving properties, thus further study concerned about increasing interaction between fibers and cement matrix should be taken.<br></p>...
Load-bearing capacity and fracture behavior of glass fiber-reinforced composite cranioplasty implants
Background: Glass fiber-reinforced composites (FRCs) have been adapted for routine clinical use in various dental restorations and are presently also used in cranial implants. The aim of this study was to measure the ...
The effect of smear layer removal on E faecalis leakage and bond strength of four resin-based root canal sealers
<div><b>Background: </b>The aim of the study was to assess bacterial sealability and bonding ability of methacrylate-based Resilon (RS, SybronEndo), Endo Rez (ER, Ultradent Products Inc), and epoxy-based AH Plus (AH, ...
Bilayered composite restoration: the effect of layer thickness on fracture behavior
<p><b>Purpose:</b> By combining the
increased toughness of a resin composite reinforced with discontinuous fibers
and the surface wear resistance of a particulate filler composite (PFC), a
bilayered composite technique ...
Physicochemical properties of dimethacrylate resin composites with comonomer of Hexa/Tri-ethylene glycol bis(carbamate-isoproply-α-methylstyrene)
<p>New photocurable “Phene” like monomers Hexaethylene
glycol bis(carbamate-isoproply-α-methylstyrene) (HE-Phene) and Triethylene
glycol bis(carbamate-isoproply-α-methylstyrene) (TE-Phene) were synthesized and
incorporated ...
An overview of development and status of fiber-reinforced composites as dental and medical biomaterials
Fibr-reinforced composites (FRC) have been used successfully for decades in many fields of science and engineering applications. Benefits of FRCs relate to physical properties of FRCs and versatile production methods, which ...
The effect of ethanol on surface of semi-interpenetrating polymer network (IPN) polymer matrix of glass-fibre reinforced composite
<p>Aim of the study:The aim of this laboratory study was to evaluate the effect of ethanol treatment on the surfaceroughness (Sa), nano-mechanical properties (NMP) and surface characterization of dentalfiber reinforcedcomposite ...
Dual-curing resin cement with colour indicator for adhesively cemented restorations to dental tissues: Change of colour by curing and some physical properties
<p>The study was aimed to investigate a color indicator containing dual
curing resin composite luting cement and to plot the color change to the
time of solidification of the cement. In addition some physical
properties ...
Three-dimensional printing of zirconia: characterization of early stage material properties
<p><b>Objective:</b> The aim of this study was to evaluate the mechanical properties of 3D printed zirconia (ZrO2). </p><p><b>Materials and Methods:</b> The test specimens were produced with a 3D printer that uses ...