Development and characterization of new AR glass fiber‐reinforced cements with potential medical applications

Abstract

The aim of this study was to obtain and investigate new biomedical glass fiber resin cements with improved mechanical properties and radiopacity, using alkaline-resistant (AR) glass fibers. New light-curing, self-curing, and dual-curing resin cements were obtained from AR glass fibers and BaSO 4 powder mixed with 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)-phenyl]propane and triethyleneglycol dimethacrylate monomers at different weight ratios, such as 5/20/75, 10/20/70, 20/20/60. The newly obtained cements were investigated for mechanical properties-compressive yield strength (CYS), compressive modulus (CM), diametral tensile strength (DTS)-as well as for radiopacity. Slight increases in CYS, CM, DTS and improved radiopacity with increasing amount of glass fibers were observed. The mechanical properties were found to increase in the order light-curing < self-curing < dual-curing. SEM images support the reinforcement of resin cements by glass fibers.

Mechanical Properties of MiniBars™ Basalt Fiber-Reinforced Geopolymer Composites

“…These results were in agreement with other studies regarding the stopping of crack propagation of glass/basalt fiber in composites [ 20 , 21 , 22 ]. In our study, unidirectional MiniBars™ showed higher mechanical properties than Fly100.…”

“…The flexural modulus of MiniBars™ FRBCs ( Figure 4 b) increased in the same way with the increased addition of MiniBars™: more than 3.33–5.92 times than that of Fly100, with values between 267.74–475.63 MPa. These results were in agreement with other studies when the addition of glass fiber increased mechanical properties and fibers acted as crack stoppers [ 19 , 20 , 21 , 22 ]. Under the load applied to MiniBars™ FRBC, the cracks will be bridged by MiniBars™.…”

“…In our study, unidirectional MiniBars™ showed higher mechanical properties than Fly100. This could be explained by the direction of orientation of MiniBars™ (unidirectional) that was perpendicular to the direction of the applied force [ 21 ]. The strength of the MiniBars™ FRBC also depends on the fiber direction inside composites [ 21 ].…”

Influence of Filler Loading on the Mechanical Properties of Flowable Resin Composites

“…The mechanical properties of FRCs depend on two main variables: the type of organic matrix [9,10], which gives the mechanical properties of the organic part [11,12], and the inorganic filler [13], characterized by the type, size, and geometry [13,14]. Other factors that influence the mechanical behavior of FRCs are the silanization [8], factors affecting the polymerization efficiency [15,16], and the binding between the inorganic filler and the organic matrix [8,17]. The clinical longevity of a dental material such as FRCs is correlated with the mechanical properties [18], because increased mechanical properties facilitate a good response to occlusal mechanical stress (clinical wear) [19].…”

Novel bioresorbable phosphate glass fiber textile composites for medical applications

“…After the first introduction of bioactive glasses by Hench et al, bioactive glasses have been a growing interest for implant application with ability to form a direct bond to living bone by forming a surface hydroxyapatite layer in physiological conditions [21][22][23]. There are now several types of bioactive glasses, including conventional silicate glass [24][25][26], phosphate-based glass [27][28][29][30], and borate-based glass [31][32][33].…”