Linear polymerization shrinkage of Bulk Fill resins

Correia, Tereza Cristina; Silva, Rodivan Braz da; Grangeiro, Manassés Tercio Vieira; Souza, Helen Tayná Noca De; Sousa, Lorem Krsna de Morais; Feitosa, Diala Aretha de Sousa

doi:10.5335/rfo.v22i3.7733

Cited by 1 publication

(2 citation statements)

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“…However, the other bulk-fill flowable composite (GBI) had similar shrinkage to conventional flowable composite, which can be related to these composites' content of resin matrix. XB had the lowest shrinkage among flowable composites (3.3%), similarly, T. C. Correia et al (2017) reported in their study that XB caused the lowest marginal gap.…”

Section: Resultssupporting

confidence: 61%

“…Using flowable bulk‐fill composites has the advantage of better material adjustment to the cavity walls and polymerization stress reduction due to low modulus of elasticity (T. C. Correia et al, 2017 ; Soares et al, 2017 ). It was reported that flowable bulk‐fill composites had better marginal seals compared to packable bulk‐fill composites (Orłowski et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of polymerization shrinkage of a new bulk‐fill flowable composite with other composites: An in vitro study

Tusi

Hamdollahpoor

Savadroodbari

et al. 2022

Clinical & Exp Dental Res

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Objective: Since composites still face a critical problem called polymerization shrinkage and bulk-fill composites have reported acceptable results for this issue, this study aims to assess the polymerization shrinkage of a new bulk-fill flowable composite (G-aenial bulk injectable [GBI]) and compare it to other bulk-fill and conventional composites. Materials and Methods:In this in vitro study, 25 composite discs were fabricated using three bulk-fill and two conventional composites. They were bonded to a microscopic slide and were covered by a coverslip. This assembly was transferred to a linear variable differential transformer and composite samples were cured from underneath the slides. Dimensional changes formed in composite samples were recorded. Data were analyzed using analysis of variance followed by post hoc Tukey's and Dunnett's tests. Results:The groups were significantly different regarding polymerization shrinkage.G-aenial bulk injectable and G-aenial universal flo showed significantly higher polymerization shrinkage than other composites at 30, 60, and 1800 s after light irradiation, while X-tra fil and Filtek Z250 showed the lowest polymerization shrinkage at the aforementioned time points. Conclusion:According to the results, the new composite had polymerization shrinkage similar to the conventional one. Bulk-fill composites reported similar or lower shrinkage to conventional composites.

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Section: Resultssupporting

confidence: 61%