Comparison of silorane and methacrylate-based composite resins on the curing light transmission

Guiraldo, Ricardo Danil; Consani, Símonídes; Berger, Sandrine Bittencourt; Mendes, Wilson Batista; Sinhoreti, Mário Alexandre Coelho; Correr-Sobrinho, Lourenço

doi:10.1590/s0103-64402010000600010

Cited by 40 publications

(34 citation statements)

References 17 publications

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“…The DC directly influences the mechanical properties of a dental resin composite (8). Thus, a higher degree of conversion is desirable in order for the filling material to convert its monomers into a polymer and achieve the best mechanical properties (10). The DC has also been found to be reduced at greater depths in a restorative material.…”

Section: Introductionmentioning

confidence: 99%

Microtensile Bond Strength and Microhardness of Composite Resin Restorations Using a Sonic-Resin Placement System

et al. 2017

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The aim of this study was to evaluate the efficacy of applying sonic energy on microtensile bond strength and microhardness after the restoration process. A total of 40 human third molars were extracted. Class II cavities were prepared and restored with composite SonicFill or Filtek Z350 XT with and without the application of sonic energy. After the teeth were stored in water for 24 h, the teeth were sectioned into sticks (1.0 mm 2 ) and subjected to tensile testing. For a depth Knoop hardness test, the samples were cut and indentations were made sequentially from the surface of the samples to the bottom of the samples in three intervals of 1 mm each. The samples were then subjected to a load of 50 g for 10 s. The results from the tensile (factors: placement system and composite) and hardness (factors: placement system, composite and depth) tests were subjected to the Kolmogorov-Smirnov normality test, followed by analysis of variance and Tukey's test (5% significance). For the placement system factor, higher bond strength was observed for the cavities that were restored with sonic energy (p < 0.001). For depth Knoop hardness, the hardness at 1 mm depth was significantly greater than that at 3 mm depth just for the restorations with Filtek Z350 XT composite without the application of sonic energy. Therefore, the use of sonic energy during the restorative process improved bonding, yet it did not markedly affect the depth hardness for both composites.

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Section: Introductionmentioning

confidence: 99%

Microtensile Bond Strength and Microhardness of Composite Resin Restorations Using a Sonic-Resin Placement System

et al. 2017

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“…This result can be attributed, in part, to the chemical differences between the 2 composites. Guiraldo et al (2010) demonstrated that a difference in light transmission between silorane and methacrylate-based resin composites does exist, with the latter having a significantly higher degree of subsurface polymerization. Moreover, the depth of curing and degree of conversion were statistically lower in the low-shrinkage (silorane) composites than in the conventional (methacrylate) composites (Kusgoz et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Influence of Tooth Bleaching on the Bonding Strength of Silorane-Based Restorative System

Monteiro

Carneiro

Nogueira

et al. 2015

Int. J. Odontostomat.

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Bleaching procedures can interfere on adhesive bonding of methacrylate-based restorative materials. After introduction of silorane-based composites, little information is available about this interaction. The objective is evaluate the influence of bleaching on enamel shear bond strength of silorane-based restorative system. Forty sound incisive bovine teeth were randomly divided into 04 groups (n= 10), being: G1 (control) -not bleached + Clearfil SE Bond (CSEB)/Filtek Z250 (Z250), G2 (control) -not bleached + Silorane Adhesive (SA)/Filtek P90 (P90), G3 -bleached + CSEB/Z250; G4 -bleached + SA/P90. The teeth were sectioned, had crowns included in a PVC rings, and the enamel surfaces gridded and polished with silicon carbide abrasive papers. G1 and G2 were stored in artificial saliva (37 ºC), daily renewed, for a period of 04 days. G3 and G4 were exposed to 02 sessions of 38% hydrogen peroxide (38HP), with 03 applications of 15 min in each session. Composite resin cylinders were built up on the enamel surfaces. Bonding procedures were performed according the manufacturer's instructions. After storage in distilled water for 24 h (37 ºC), the samples were submitted to shear bond test. Data were analyzed by two-way ANOVA and t (LSD) tests (5%). Intra group comparison showed significant difference for Z250 after bleaching, but not for P90. Shear strength was significant lower for P90, despite bleaching procedures. In conclusion, 38HP bleaching had no influence on the enamel bond strength of P90, even though presenting lower bond strength than Z250.

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“…More often dental composites used in a dental practice are based on silorane matrix [3,4]. Siloranes consist of a cyclic main silorane chain, which bestows hydrophobic properties, and cycloaliphatic oxirane groups connected through organic alkane groups directly to silica atoms.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Light Source and Curing Parameters on Microhardness of a Silorane-Based Dental Composite Material

Malara

Czech

Świderski³

2016

Archives of Metallurgy and Materials

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The aim of the study was to determine the influence of the light source and the light-curing parameters (the distance of the material from the light source and time of light-curing) on microhardness of Flitek Silorane dental composite material. Standardized samples of Filtek Silorane material were cured using two types of Light Curing Units (LCUs) – halogen and LED. The distance of the light source and time of curing differed between samples. The Knoop’s microhardness was tested using microhardness tester Micromet 5103. Using LED light curing unit allowed to achieve significantly higher microhardness of silorane-based dental material Filtek Silorane than using halogen light curing unit. Decreasing the distance from the light source to the surface of silorane-based material Filtek Silorane improved its microhardness. A prolonged curing time could compensate the drop in microhardness of Filtek Silorane material resulting from an increased distance from the light source to the surface of the material only in a limited range of intervals.

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Comparison of silorane and methacrylate-based composite resins on the curing light transmission

Cited by 40 publications

References 17 publications

Microtensile Bond Strength and Microhardness of Composite Resin Restorations Using a Sonic-Resin Placement System

Microtensile Bond Strength and Microhardness of Composite Resin Restorations Using a Sonic-Resin Placement System

Influence of Tooth Bleaching on the Bonding Strength of Silorane-Based Restorative System

Influence of the Light Source and Curing Parameters on Microhardness of a Silorane-Based Dental Composite Material

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