Physical properties of a new silorane-based restorative system

Lien, Wen; Vandewalle, Kraig S

doi:10.1016/j.dental.2009.12.004

Cited by 159 publications

(117 citation statements)

References 26 publications

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“…Conversely, the other tested materials consisted predominantly of glass, whose silica (SiO 2 ) structures have an amorphous (non-crystalline) orientation. 27 Such differences in filler composition do not allow a reliable analysis of the effects of filler size and shape on mechanical properties of commercial RCs. Moreover, because of the differences in filler composition among the products, it was not possible to distinguish the influence of silorane monomer from the influence of the filler particle features on the FS observed in 3MLS.…”

Section: Discussionmentioning

confidence: 99%

Silorane- and high filled-based"low-shrinkage" resin composites: shrinkage, flexural strength and modulus

et al. 2013

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Silorane-and high filled-based "lowshrinkage" resin composites: shrinkage, flexural strength and modulus Abstract: This study compared the volumetric shrinkage (VS), flexural strength (FS) and flexural modulus (FM) properties of the low-shrinkage resin composite Aelite LS (Bisco) to those of Filtek LS (3M ESPE) and two regular dimethacrylate-based resin composites, the microfilled Heliomolar (Ivoclar Vivadent) and the microhybrid Aelite Universal (Bisco). The composites (n = 5) were placed on the Teflon pedestal of a videoimaging device, and VS was recorded every minute for 5 min after 40 s of light exposure. For the FS and FM tests, resin discs (0.6 mm in thickness and 6.0 mm in diameter) were obtained (n = 12) and submitted to a piston-ring biaxial test in a universal testing machine. VS, FS, and FM data were submitted to two-way repeated measures and one-way ANOVA, respectively, followed by Tukey's post-hoc test (α = 5%). Filtek LS showed lower VS than did Aelite LS, which in turn showed lower shrinkage than did the other composites. Aelite Universal and Filtek LS exhibited higher FS than did Heliomolar and Aelite LS, both of which exhibited the highest FM. No significant difference in FM was noted between Filtek LS and Aelite Universal, while Heliomolar exhibited the lowest values. Aelite LS was not as effective as Filtek LS regarding shrinkage, although both lowshrinkage composites showed lower VS than did the other composites. Only Filtek LS exhibited FS and FM comparable to those of the regular microhybrid dimethacrylate-based resin composite.

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Section: Discussionmentioning

confidence: 99%

Silorane- and high filled-based"low-shrinkage" resin composites: shrinkage, flexural strength and modulus

et al. 2013

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“…1,2 Recently, a silorane-based material was introduced. Silorane composite has shown approximately 0.94 vol% to 1.5 vol% shrinkage [3][4][5] and comparable flexural strength to methacrylate composite. 3 A silorane molecule comes from the reaction of oxirane and siloxane molecules.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Treatments on Microtensile Bond Strength of Repaired Aged Silorane Resin Composite

Palasuk

Platt

Cho

et al. 2013

Operative Dentistry

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SUMMARY Objective: This laboratory study compared the repaired microtensile bond strengths of aged silorane resin composite using different surface treatments and either silorane or methacrylate resin composite. Methods: One hundred eight silorane resin composite blocks (Filtek LS) were fabricated and aged by thermocycling between 8°C and 48°C (5000 cycles). A control (solid resin composite) and four surface treatment groups (no treatment, acid treatment, aluminum oxide sandblasting, and diamond bur abrasion) were tested (N=12 blocks, 108 beams/group). Each treatment group was randomly divided in half and repaired with either silorane resin composite (LS adhesive) or methacrylate resin composite (Filtek Z250/Single Bond Plus). After 24 hours in 37°C distilled water, microtensile bond strength testing was performed using a non-trimming technique. Surface topography after surface treatment was analyzed using scanning electron microscopy (SEM). Failure mode was examined using optical microscopy (50×). Results: Weibull-distribution survival analysis revealed that aluminum oxide sandblasting followed by silorane or methacrylate resin composite and acid treatment with methacrylate resin composite provided insignificant differences from the control (p>0.05). All other groups were significantly lower than the control. Failure was primarily adhesive in all groups. Conclusion: Aluminum oxide sandblasting produced microtensile bond strength not different from the cohesive strength of silorane resin composite. After aluminum oxide sandblasting, aged silorane resin composite can be repaired with either silorane resin composite with LS system adhesive or methacrylate resin composite with methacrylate dental adhesive.

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“…The acid cation attacks oxirane rings, causing the cleavage and opening of these rings that compensate for loss of volume due to covalent bonds among the atoms 11) . This mechanism allows a reduction in polymerization shrinkage [18][19][20][21] , and according to some studies, siloranes also decrease polymerization stress 19,22) .…”

Section: Discussionmentioning

confidence: 82%

Effect of thermo-mechanical load cycling on silorane-based composite restorations

et al. 2012

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The aim of this study was to compare the formation of marginal gaps after thermo-mechanical load cycling, between siloranebased and methacrylate-based restorations. Standardized class II cavities were made in 10 permanent human third molars that were restored with the adhesive system Clearfil SE Bond+composite Filtek Z-350 (Methacrylates) and with the composite bonding Filtek P90+P90 (Siloranes), respectively. After 24 h of storage in 100% humidity at 37°C, the restoration margins were stained, photographed, and evaluated. The gap length was calculated as the percentage of the total length of the margins. Thereafter, the specimens were tested by a thermo-mechanical machine and the marginal gap formation of the specimens was re-evaluated. The results were expressed as percentages of gaps and were submitted to a Mann Whitney test at 5% level of significance. Methacrylates showed a statistically significant higher percentage of gaps than Siloranes, both before and after cycling.

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Physical properties of a new silorane-based restorative system

Cited by 159 publications

References 26 publications

Silorane- and high filled-based"low-shrinkage" resin composites: shrinkage, flexural strength and modulus

Silorane- and high filled-based"low-shrinkage" resin composites: shrinkage, flexural strength and modulus

Effect of Surface Treatments on Microtensile Bond Strength of Repaired Aged Silorane Resin Composite

Effect of thermo-mechanical load cycling on silorane-based composite restorations

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