Optical characterization of bisphenol-A-glycidyldimethacrylate–triethyleneglycoldimethacrylate (BisGMA/TEGDMA) monomers and copolymer

Lehtinen, Janne; Laurila, Toni; Lassila, Lippo; Vallittu, Pekka K.; Räty, Jukka; Hernberg, Rolf

doi:10.1016/j.dental.2008.02.012

Cited by 38 publications

(34 citation statements)

References 12 publications

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“…A few studies examined the optical properties of these materials. Since the formulation affects the optical properties of a resin composite 14,15) , the silorane-based resin composites might exhibit differences in the color and translucency compared to methacrylate-based resin composites. In addition, although silorane-based resin composites are believed to be suitable for both anterior and posterior restorations by manufacturers according to their product advertisements, its long-term clinical performance and color stability are yet to be determined.…”

Section: Introductionmentioning

confidence: 99%

The color stability of silorane- and methacrylate-based resin composites

et al. 2012

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The purpose of this study were to evaluate the discoloration of a silorane-based resin and two methacrylated-based resin composites upon exposure to different staining solutions coffee, red wine, porcine liver esterase and distilled water for 7 days. The colors of all specimens before and after storage in the solutions were measured by a spectrophotometer based on CIE Lab system, and the color differences thereby calculated. Data were statistically analyzed by ANOVA and Scheffe's test. For coffee and red wine, the mean color change in silorane-based resin was significantly lower than that in methacylate-based resin composites (p<0.05). For porcine liver esterase and distilled water, there was no significant difference in the mean values of color change between silorane-and methacrylate-based resin composites (p>0.05). In conclusion, the silorane-based resin composites exhibited better color stability (less ΔE) after exposure to the colored staining solutions.

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Section: Introductionmentioning

confidence: 99%

The color stability of silorane- and methacrylate-based resin composites

et al. 2012

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“…This effect may be attributed to the scattering effects by glass fiber fillers, thus allowing less light to be transmitted through the composite structure. Le Bell et al and Lehtinen et al have shown that unidirectional E-glass fiber-reinforced composites conduct and scatter the light better than conventional composite resins (Le Bell, et al, 2003;Lehtinen, et al, 2008). They also showed that by polymerization, the monomer system to polymer, the light scattering improves.…”

Section: Discussionmentioning

confidence: 92%

Effect of Short Fiber Fillers on the Optical Properties of Composite Resins

Garoushi¹,

Vallittu²,

Lassila³

2012

JMSR

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Objectives: The aim was to evaluate the effect of different fractions of fiber fillers on the translucency and color change of short fiber composite with various thicknesses. Methods:Fiber composite resin was prepared by mixing resin matrix with various weight fractions of short (3 mm in length) E-glass fiber fillers (0, 11.7, 21.0, 28.5, 34.7 wt%) and then silane treated particulate silica fillers were gradually added by using high speed mixing machine. Particulate filler composite resin without fibers was used as control. Composite resins disks of 10 mm in diameter and with various thicknesses (1.0, 2.0, 3.0, 4.0, and 5.0 mm) of each group were prepared (n=3). Translucency parameter (TP) and color change (∆E) were calculated over a white and black background using spectrophotometer to determine the CIELAB values of each specimen. Data were statistically analyzed with analysis of variance (ANOVA).Results: ANOVA revealed that fraction of fiber fillers had a significant effect (P<0.05) on the translucency and color change values of the short fiber composite resin. Translucency values at various thicknesses of short fiber composite was significantly lower than particulate filler composite with same total fillers weight fractions.Significance: Inclusion of short glass fiber fillers reduced the translucency values of the composite resins. Thus, the masking ability of short fiber composite resin at various thicknesses was better than particulate filler composite. Color change was also altered with an increase of fractions of fiber fillers.

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“…Specimens of 12-mm length polymerized with the 40-second blue light cure had a high degree of monomer conversion (DC%) of approximately 50% (Le Bell et al, 2003;Lehtinen et al, 2008).…”

Section: Surgical Proceduresmentioning

confidence: 98%

Prepolymerized vs. in situ-polymerized Fiber-reinforced Composite Implants – a Pilot Study

Ballo

Närhi²,

Akça

et al. 2010

J Dent Res

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The aim of this study was to investigate bone response to bioactive fiber-reinforced composite (FRC) implants under two polymerization conditions. Glass-fiber-dimethacrylate composite was tested as prepolymerized cylinder-shaped FRC implants and as cylindrical FRC implants polymerized in situ with blue light transmitted and scattered by the glass fibers. Ten FRC implants (6 prepolymerized and 4 in situ-polymerized implants) were placed in the right tibias of 3 pigs by means of a press-fit technique. After 12 weeks, light microscopy revealed only mild foreign-body reaction, with no accumulation of inflammatory cells on both the prepolymerized and the in situ-polymerized implants. The prepolymerized implants appeared to be fully integrated, whereas the in situ-polymerized implants were almost completely surrounded by a fibrous capsule. The present study suggests that in situ polymerization of FRC implants results in fibrous capsule formation and prevents integration with bone.

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Optical characterization of bisphenol-A-glycidyldimethacrylate–triethyleneglycoldimethacrylate (BisGMA/TEGDMA) monomers and copolymer

Cited by 38 publications

References 12 publications

The color stability of silorane- and methacrylate-based resin composites

The color stability of silorane- and methacrylate-based resin composites

Effect of Short Fiber Fillers on the Optical Properties of Composite Resins

Prepolymerized vs. in situ-polymerized Fiber-reinforced Composite Implants – a Pilot Study

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