Bulk fill restoratives: To cap or not to cap – That is the question?

The present study investigated the effect of three high-viscosity bulk-fill resin-based composite materials on cuspal deflection in natural teeth. Thirty-two sound maxillary premolar teeth with large slot mesio-occlusal-distal cavities were distributed into four groups (n=8). Three groups were restored with bulk-fill resin composite materials (Tetric EvoCeram Bulk Fill, Ivoclar Vivadent, Schaan, Liechtenstein; x-tra fil, VOCO, Cuxhaven, Germany; and SonicFill, Kerr, Orange, CA, USA) in a single 4-mm increment. The conventional composite group, Filtek Z100 (3M ESPE, St Paul, MN, USA), was used to restore the cavities in 2-mm increments. Cusp deflection was recorded postirradiation using a Nikon measurescope UM-2 (Nikon, Tokyo, Japan) by measuring the changes in the bucco-palatal widths of the teeth at five minutes, 24 hours, and 48 hours after completion of the restorations. Cuspal deflection was significantly higher in the conventional composite than in the Tetric EvoCeram Bulk Fill ( p=0.0031), x-tra fil ( p=0.0029), and SonicFill Bulk ( p=0.0002) groups. There were no significant differences in cuspal deflection among the three bulk-fill materials (all p<0.05). In conclusion, all the investigated bulk-fill resin composites exhibited cuspal deflection values that were smaller than those associated with a conventional incrementally placed resin composite.

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“…Nevertheless, results related to these specific bulk-fill materials cannot be generalized to describe all kinds of bulk-fill composites. 75…”

Section: Bulk-fill Composite Materialsmentioning

confidence: 99%

Cuspal Deflection in Premolar Teeth Restored with Bulk-Fill Resin-Based Composite Materials

Elsharkasi

Platt

Cook

et al. 2018

Operative Dentistry

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“…However, because of the low resistance to wear expected with lower filler contents, the clinical placement technique calls for bulk fill of the cavity preparation with the flowable material, except for the last 2 mm of the occlusal surface, which needs to be filled with a conventional, highly filled material. In other words, the restoration still has a “cap” made of a hybrid or micro-hybrid regular consistency composite to ensure sufficient mechanical strength to withstand occlusal loading and reduce the amount of wear [63, 80]. The degree of conversion of such flowable bulk-fill materials at the bottom of 4 mm increments was indeed shown to be similar to that of the top in some studies [81].…”

Section: Bulk-fill Materialsmentioning

confidence: 99%

Polymer-Based Direct Filling Materials

Pfeifer

2017

Dental Clinics of North America

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Synopsis After a brief review of current restorative materials and classifications, this article discusses the latest developments in polymer-based direct filling materials, with emphasis on products and studies available in the last 10 years. This will include the more recent bulk-fill composites and self-adhesive materials, for which clinical evidence of success, albeit somewhat limited, is already available. The article will also introduce the latest cutting edge research topics on new materials for composite restorations, and an outlook for the future of how those may help improve the service-life of dental composite restorations.

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“…19 As a result, problems related to polymerization could be minimized. 21,22 The formation of gaps along the gingival margins of composite restorations might be related to compositetooth bond strength. 8 In this study, none of the groups' bulk-filling technique, with bulk-fill composites (SDR and Filtek Bulk-Fill), caused less gap-free margins compared with the control groups using incrementally layered restorative technique.…”

Section: Discussionmentioning

confidence: 99%

Clinical Time Required and Internal Adaptation in Cavities restored with Bulk-fill Composites

Vianna-de-Pinho

Rego

Vidal

et al. 2017

The Journal of Contemporary Dental Practice

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Aim:The aim of this study was to compare the restorative time required and the internal adaptation after thermomechanical aging of class I restorations using either the conventional incremental technique or bulk-fill technique. Materials and methods:Cavities (Class I) were prepared on the occlusal surface of human third molars. 40 teeth were divided into four experimental groups according to the restorative technique (n = 10): G1 = 3 mm increment of Surefill SDR Flow + 1 mm Filtek P60; G2 = 3 mm increment of Filtek Bulk-Fill + 1 mm Filtek P60; G3 = Filtek P60 inserted with incremental technique; G4 = 3 mm increment of Filtek Z350 Flow XT + 1 mm increment of Filtek P60. The required restorative clinical time for each technique was marked. Specimens were submitted to thermomechanical loading (20,000 mechanical cycles-80 N/thermal cycling-5/55°C for 30 seconds). After, samples were sectioned, ratio of internal gaps to interface length (%) was recorded using Results: There was no significant difference in gap formation and none of the groups was completely gap-free. However, a significant reduction on required restorative clinical time was observed for G1 (167 ± 7 seconds), G2 (169 ± 4 seconds), and G4 (169 ± 8 seconds) when compared with G3 (204 ± 8 seconds). Conclusion:No significant difference in gap formation was found among bulk-fill and conventional incremental restorative technique tested; however, the use of a bulk-fill composite reduced 20% of the required restorative clinical time.Clinical significance: None of the restorative techniques applied were able to prevent internal gap formation. The use of bulk-fill composite reduced the required clinical time to perform class I restorations.

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Bulk fill restoratives: To cap or not to cap – That is the question?

Cited by 62 publications

References 34 publications

Cuspal Deflection in Premolar Teeth Restored with Bulk-Fill Resin-Based Composite Materials

Cuspal Deflection in Premolar Teeth Restored with Bulk-Fill Resin-Based Composite Materials

Polymer-Based Direct Filling Materials

Clinical Time Required and Internal Adaptation in Cavities restored with Bulk-fill Composites

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