Polymerization behavior and mechanical properties of high-viscosity bulk fill and low shrinkage resin composites

S. Shibasaki, T. Takamizawa, K. Nojiri, A. Imai, A. Tsujimoto, H. Endo, S. Suzuki, S. Suda, Wayne W. Barkmeier, Mark A. Latta, M. Miyazaki

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Abstract

The present study determined the mechanical properties and volumetric polymerization shrinkage of different categories of resin composite. Three high viscosity bulk fill resin composites were tested: Tetric EvoCeram Bulk Fill (TB, Ivoclar Vivadent), Filtek Bulk Fill posterior restorative (FB, 3M ESPE), and Sonic Fill (SF, Kerr Corp). Two low-shrinkage resin composites, Kalore (KL, GC Corp) and Filtek LS Posterior (LS, 3M ESPE), were used. Three conventional resin composites, Herculite Ultra (HU, Kerr Corp), Estelite Σ Quick (EQ, Tokuyama Dental), and Filtek Supreme Ultra (SU, 3M ESPE), were used as comparison materials. Following ISO Specification 4049, six specimens from each resin composite were used to determine flexural strength, elastic modulus, and resilience. Volumetric polymerization shrinkage was determined using a water-filled dilatometer. Data were evaluated using analysis of variance followed by Tukey's honestly significant difference test (<=0.05). The flexural strength of the resin composites ranged from 115.4 to 148.1 MPa, the elastic modulus ranged from 5.6 to 13.4 GPa, and the resilience ranged from 0.70 to 1.0 MJ/m3. There were significant differences in flexural properties between the materials but no clear outliers. Volumetric changes as a function of time over a duration of 180 seconds depended on the type of resin composite. However, from all the resin composites, apart from LS, volumetric shrinkage began soon after the start of light irradiation, and a rapid decrease in volume during light irradiation followed by a slower decrease was observed. The low shrinkage resin composites KL and LS showed significantly lower volumetric shrinkage than the other tested materials at the measuring point of 180 seconds. In contrast, the three bulk fill resin composites showed higher volumetric change than the other resin composites. The findings from this study provide clinicians with valuable information regarding the mechanical properties and polymerization kinetics of these categories of current resin composite.

Original languageEnglish (US)
Pages (from-to)E177-E187
JournalOperative Dentistry
Volume42
Issue number6
DOIs
StatePublished - Nov 1 2017

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Composite Resins
Viscosity
Polymerization
Elastic Modulus
Light
Analysis of Variance
Tooth

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Shibasaki, S., Takamizawa, T., Nojiri, K., Imai, A., Tsujimoto, A., Endo, H., ... Miyazaki, M. (2017). Polymerization behavior and mechanical properties of high-viscosity bulk fill and low shrinkage resin composites. Operative Dentistry, 42(6), E177-E187. https://doi.org/10.2341/16-385-L

Polymerization behavior and mechanical properties of high-viscosity bulk fill and low shrinkage resin composites. / Shibasaki, S.; Takamizawa, T.; Nojiri, K.; Imai, A.; Tsujimoto, A.; Endo, H.; Suzuki, S.; Suda, S.; Barkmeier, Wayne W.; Latta, Mark A.; Miyazaki, M.

In: Operative Dentistry, Vol. 42, No. 6, 01.11.2017, p. E177-E187.

Research output: Contribution to journalArticle

Shibasaki, S, Takamizawa, T, Nojiri, K, Imai, A, Tsujimoto, A, Endo, H, Suzuki, S, Suda, S, Barkmeier, WW, Latta, MA & Miyazaki, M 2017, 'Polymerization behavior and mechanical properties of high-viscosity bulk fill and low shrinkage resin composites', Operative Dentistry, vol. 42, no. 6, pp. E177-E187. https://doi.org/10.2341/16-385-L
Shibasaki, S. ; Takamizawa, T. ; Nojiri, K. ; Imai, A. ; Tsujimoto, A. ; Endo, H. ; Suzuki, S. ; Suda, S. ; Barkmeier, Wayne W. ; Latta, Mark A. ; Miyazaki, M. / Polymerization behavior and mechanical properties of high-viscosity bulk fill and low shrinkage resin composites. In: Operative Dentistry. 2017 ; Vol. 42, No. 6. pp. E177-E187.
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AU - Suzuki, S.

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