The bond strength of highly filled flowable composites placed in two different configuration factors

Sağsöz, Ömer; Ilday, Nurcan Özakar; Karataş, Özcan; Cayabatmaz, Muhammed; Parlak, Hatice; Ölmez, Melek Hilal; Demirbuğa, Sezer

doi:10.4103/0972-0707.173188

Cited by 12 publications

(11 citation statements)

References 16 publications

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“…Higher filler content is therefore not a higher bond strength indicator [35]. On the other hand, the reason for the differences in µTBS results between the incrementally applied nanohybrid RC (Grandio ® SO) and packable bulk fill RC (X-tra fil ® ), despite their similar filler mass fraction (around 85%), may be related to the involvement of the other parameters such as particle size, density, type, and ratio of monomers or photoinitiators in both of them [36], [37] This could also be due to the incremental packing technique used with the nanohybrid RC that providing better polymerization of the RC material [38], [39].…”

Section: Discussionmentioning

confidence: 98%

Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Selim¹,

Elezz

Safy

2020

Open Access Maced J Med Sci

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AIM: Investigation of the aging effect on the microtensile bond strength (μTBS) of bulk-fill resin composite (RC) versus a conventionally incrementally applied one. MATERIALS AND METHODS: A total number of 45 sound human impacted third molars extracted molars have been selected to prepare specimens for the μTBS test. Teeth were randomly divided into three groups (C) according to type of RC material which used for restoring the teeth. Where nanohybrid RC (Grandio®SO) was used as the control Group (C1), packable bulk-fill RC (X-tra fil®) was used for restoring teeth in C2 group and flowable bulk-fill RC (X-tra base®) was used for restoring teeth in C3 group. Each group was further subdivided into 3 subgroups (n = 5) according to the water storage time, where in subgroup 1; teeth were stored for 24 h, subgroup 2; teeth were stored for 3 months while for subgroup 3; and teeth were stored for 6 months. After water storage, teeth were sectioned for preparation of μTBS testing beams. Maximum tensile stresses were recorded in megapascal (MPa). RESULTS: After 24 h of water storage, the X-tra base® showed a higher statistically significant μTBS to dentin (33.82 ± 9.84 MPa) than did the other two types of RCs. After 3 months, the X-tra fil® showed the lowest mean value of μTBS (10.90 ± 5.66 MPa), meanwhile, after 6 months of water storage Grandio®SO showed the highest mean value of μTBS (15.85 ± 6.76 MPa). Regardless of the time the X-tra fil® showed the lowest mean of μTBS (15.07 ± 11.73 MPa), while there is no significant difference between the X-tra base® and Grandio®SO. Furthermore, the water aging adversely affects μTBS values which deceased gradually by time. CONCLUSION: The packable bulk-fill RC characterized by lower μTBS to dentin in comparison to the flowable bulk fill and the incrementally applied nanohybrid RCs. Furthermore, the μTBS of the three tested materials decreased gradually by aging.

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Section: Discussionmentioning

confidence: 98%

Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Selim¹,

Elezz

Safy

2020

Open Access Maced J Med Sci

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“…2) raises doubts about whether pre-test failures are exclusively caused by polymerization shrinkage. Sagsoz et al (4) observed satisfactory results of μTBS for bulk fill composites; however, studies that evaluate the bond strength without observing the marginal adaptation before and after polymerization may not be reliable. The preparation of the specimens to evaluate the μTBS, as well as the preparation to observe the tooth/ composite interface in scanning electronic microscopy (7), can generate stresses and cracks in the test body.…”

Section: Discussionmentioning

confidence: 99%

“…These materials have been indicated for use in a single layer in deep cavities (4 to 5 mm) and with a high-factor cavity configuration (Factor-C), simplifying the steps in the clinic (1). Some studies have shown that BFCs have presented adequate marginal adaptation (2), low polymerization shrinkage (1) and satisfactory results in bond strength (3,4).…”

Section: Introductionmentioning

confidence: 99%

“…The most obvious concern with respect to the PS stresses is the detrimental effect on marginal integrity and sealing of the composite restoration to the tooth (5), which may lead to tooth/composites interface failure, but these failures can be minimized by performing the incremental insertion technique, with the decrease of the C-factor (4).…”

Section: Introductionmentioning

confidence: 99%

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Polymerization Shrinkage of Bulk Fill Composites and its Correlation with Bond Strength

et al. 2018

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The present study aimed to evaluates polymerization shrinkage (PS) using microcomputed tomography (μCT) and microtensile bond strength (μTBS) in bulk fill composites (BFC) and conventional class I restorations as well as the correlation between these factors. Class I cavities (4 x 5 x 4 mm), factor-C = 4.2, were created in third molars that were free of caries, which were randomly divided in 4 groups (n = 6): XTI (Filtek Supreme XTE: incremental technique); XTB (Filtek Supreme XTE: single fill technique); TBF (Tetric Bulk Fill); and SF (SonicFill). Each tooth was scanned twice in μCT: T0 was after filling the cavity with composite, and T1 was after light curing. The data were analyzed by subtracting the composite volume for each time (T1 - T0). After 1 week, the teeth were sectioned crosswise in the buccolingual and mesiodistal directions to obtain specimens with approximately 1 mm² thickness and fixed in a universal testing machine to perform μTBS. The Kruskal-Wallis and Dunn tests showed a statistically significant difference for shrinkage in µCT among the XTI and XTB and between the SF and XTB. Regarding the μTBS, all the groups differed from XTB. Bulk fill composites type presents a PS similar to that of the conventional nanoparticulate composite inserted using the incremental technique, but the bond strength was higher for the incremental group, which presented a lower number of pre-test failures when compared to BFC. No correlation was observed between the polymerization shrinkage and bond strength in the studied composites.

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“…In 2012, Giovannetti et al performed some cementation protocols with a flowable composite originally proposed for bulk filling posterior restorations [9]. Their study showed that bulk-fill flowable composites produced better results regarding cavity configurations (C-factors) to build up class I or II cavities [10] than conventional composite resins; in deep cavities, bulk-fill flowable composites exhibited satisfactory bond strength with the remaining structure [11].…”

Section: Introductionmentioning

confidence: 99%

Bond strength of glass fiber posts cemented with bulk-fill flowable composite resin

et al. 2019

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This study evaluated the adhesive bond strength of glass fiber posts cemented with bulk-fill flowable resin in endodontically treated teeth, and the results were compared with those of glass fiber posts cemented with resin cement. Forty bovine incisor roots were selected and randomly divided into 2 groups (n = 20). The external surfaces of the roots were coated with a molding material. The canals were prepared, and then the fiber posts (Whitepost no. 2, FGM) were cemented with either resin cement (Allcem, FGM) (n = 20) or bulk-fill flowable resin (Opus Bulk Fill, FGM) (n = 20). Ten roots (n = 10) of each material were subjected to push-out and pull-out tests (EMIC DL 2000, Brazil) under compressive and tensile loading, respectively; a 50 N load cell and a constant crosshead speed of 0.5 mm/min was used for both tests. The testing data were analyzed using multifactorial analyses of variance two-way ANOVA and the Tukey test (α = 0.05). Two skilled operators determined the failure modes of the samples using a stereomicroscope at 40× magnification with a 2.5D analysis. For push-out bond strength, there were no statistically significant differences between the root thirds in the bulk-fill flowable resin group and those in the resin cement group (p = 0.536). However, there were statistically significant differences (p < 0.001) among the root thirds within the same group. For pull-out bond strength, there were no statistically significant differences between the groups (p = 0.739). Therefore, the bulk-fill flowable resin exhibited similar results to those of the resin cement from the same manufacturer in terms of the cementation of glass fiber posts, which suggests that bulk-fill flowable resin is a suitable alternative material for cementation. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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The bond strength of highly filled flowable composites placed in two different configuration factors

Cited by 12 publications

References 16 publications

Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Influence of Water Aging on Microtensile Bond Strength of a Flowable and a Packable Bulk-fill Resin Composites to Dentin

Polymerization Shrinkage of Bulk Fill Composites and its Correlation with Bond Strength

Bond strength of glass fiber posts cemented with bulk-fill flowable composite resin

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