Repair Strength in Simulated Restorations of Methacrylate- or Silorane-Based Composite Resins

Marinho, Tatiane; Bacchi, Ataís; Caldas, Ricardo Armini; Feitosa, Victor Pinheiro; Pfeifer, Carmem S.

doi:10.1590/0103-6440201600730

Cited by 6 publications

(3 citation statements)

References 18 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All groups were restored with three 1.5 mm thick composite increments of Filtek Supreme XTE (3M; color A1E) using cylindrical Teflon molds. Each repair composite increment was leveled with CompoRoller (KerrHawe), and light-cured for 20 s. Prior to microtensile bond strength testing, all specimens underwent a further thermal cycling procedure (5000 times, 5-55 • C) [26,35].…”

Section: Repair Restorationmentioning

confidence: 99%

Silane Effect of Universal Adhesive on the Composite–Composite Repair Bond Strength after Different Surface Pretreatments

et al. 2020

View full text Add to dashboard Cite

This study investigated the impact of a separate silanization step on the repair bond strength of composite substrates using a universal adhesive after various mechanical surface treatments. Composite specimens were aged and exposed to the following mechanical roughening treatments: diamond bur abrasion, aluminum oxide sandblasting, or silica coating. The specimens were then either left untreated or conditioned with universal adhesive (Scotchbond Universal), or a silane coupling agent was applied before the use of the universal adhesive or a conventional adhesive (Optibond FL). The conditioned surfaces and fresh substrate (positive control group) were covered with repair composite, and microtensile bond strength testing was performed. The significantly highest bond strength was obtained in the positive control group. Repair bond strength of the universal adhesive applied after a separate silanization step was similar to that without prior silanization, independent of the mechanical surface treatment. Moreover, after silica coating, no significant differences in the repair bond strength were detected among the different adhesive treatments. In conclusion, a separate silanization step before surface conditioning with the universal adhesive does not enhance the repair bond strength. On silica-coated composite substrates, repair bond strength values of the universal adhesive were similar to those of the conventional adhesive.

show abstract

Section: Repair Restorationmentioning

confidence: 99%

Silane Effect of Universal Adhesive on the Composite–Composite Repair Bond Strength after Different Surface Pretreatments

et al. 2020

View full text Add to dashboard Cite

show abstract

“…35 In our study, 500 thermal cycles were applied, and it was observed that the materials to which the pH cycle was applied were significantly lower than the repair shear bond strengths and had a negative effect on the shear bond strength in accordance with other studies. 22,43 This can be explained by the decrease in bond stability at the adhesive interface between direct and indirect restorations and repair materials due to continuous stress on bonding interfaces caused by temperature changes. Since there is insufficient information about the effect of pH cycling models on the bond strength and the destruction of the bonding agent, which have been successfully used to evaluate artificial caries formation or remineralization, [31][32][33] there is no study about the repair bond strength of resin composites, as they may have different effects on the degradation of composite resins.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Repairability of Different Resin Composites After ph and Thermal Cycling

ATA

Yılmaz²,

Balin³

2022

European Annals of Dental Sciences

View full text Add to dashboard Cite

Purpose: The aim of this study was to investigate the effect of different aging methods on repair bond strength of different types of composite resins. Materials and Methods: Thirty resin composite blocks (5mm×5mm×4mm) were built up with a nanohybrid universal resin composite and a bulk-fill resin composite according to the manufacturer’s instructions, using a silicone matrix. Indirect resin composite blocks were obtained with similar dimensions from prefabricated blocks by microtome. All the samples were air abraded with 50µm aluminum oxide particles. Specimens were then repaired with a nanohybrid resin composite using two step adhesive system. All these specimens were then randomly divided into three groups for aging process (pH cycle, thermal cycle and control group) and tested for shear bond strength. Results were recorded in MPa. Additionally fractured specimens were examined under stereomicroscope to determine the mode of failure. The data was statistically analyzed using two-way ANOVA and Bonferroni correction test (p

show abstract

“…The volumetric polymerization shrinkage still represents an important factor limiting the behavior and clinical longevity (CONSANI et al, 2016) of composite restorations.…”

Section: Introductionmentioning

confidence: 99%

Thermal-induced polymerization shrinkage in silorane versus methacrylate based resin composite

Baseggio¹,

Nahsan²,

Francisconi-dos-Rios³

et al. 2017

Biosci. J.

View full text Add to dashboard Cite

Shrinkage is a limitation of resin composite, compromising the clinical longevity of the restorative procedure. In an attempt to reduce their harmful effects, researchers have studied monomers with lower values of contraction. As a result, low-shrinkage composites were developed. This study evaluated quantitatively the shrinkage as a function of power density increase based on methacrylates, comparing them with silorane based resin, and qualitatively regarding gap formation between the adhesive interface as function of tooth substrate. Resin Filtek P90 and Filtek Z250 were polymerized with the device Blue Star 3 with 200, 400, 600, 800 and 1000 mW/cm 2 keeping volume constant in 12 mm 3. For qualitative analysis of restorative interface, class V cavity preparations in bovine incisors were restored in (2x2x2 mm 3), photoactivated with the same values of irradiance, and analyzed by scanning electron microscopy at the interface of the wall surrounding enamel, dentin and axial. The quantitative results of the polymerization shrinkage were analyzed by two-way ANOVA and Tukey's test (p<0.05), while qualitative data were submitedd to Mann-Whitney's, Kruskal-Wallis' and Miller's tests. The progressive increase in power density directly influenced the polymerization shrinkage of the materials studied, although the silorane based resin demonstrated significantly lower values. The marginal integrity was influenced by the dental substrate and the power density used.

show abstract

Repair Strength in Simulated Restorations of Methacrylate- or Silorane-Based Composite Resins

Cited by 6 publications

References 18 publications

Silane Effect of Universal Adhesive on the Composite–Composite Repair Bond Strength after Different Surface Pretreatments

Silane Effect of Universal Adhesive on the Composite–Composite Repair Bond Strength after Different Surface Pretreatments

Evaluation of Repairability of Different Resin Composites After ph and Thermal Cycling

Thermal-induced polymerization shrinkage in silorane versus methacrylate based resin composite

Contact Info

Product

Resources

About