Restorative Dentistry and Endodontics

  • 제42권4호
  • /
  • Pages.309-315
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  • 2017
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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Effect of water storage on flexural strength of silorane and methacrylate-based composite resins

  • Panahandeh, Narges (Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences) ;
  • Torabzadeh, Hassan (Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences) ;
  • Naderi, Hani (Department of Periodontics, Mashhad University of Medical Sciences Faculty of Dentistry) ;
  • Sheikh-Al-Eslamian, Seyedeh Mahsa (Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences)
  • 투고 : 2017.06.28
  • 심사 : 2017.10.01
  • 발행 : 2017.11.08
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초록

Objectives: This study assessed the effect of water storage on the flexural strength (FS) of low shrinkage composites. Materials and Methods: A total of 165 bar-shaped specimens ($2{\times}2{\times}25mm$) were fabricated of 2 low shrinkage composites (Filtek P90 [3M ESPE], GC Kalore [GC International]) and a conventional methacrylate-based composite (Filtek Z250 [3M ESPE]). The specimens were subjected to 3-point bending test at 6 time intervals, namely: immediately after curing, at 24 hours, 1 week, 1 month, 6 months, and 1 year following storage in wet and dry conditions. The FS of the specimens were measured by applying compressive load at a crosshead speed of 1.0 mm/min. Data was analyzed using 3-way analysis of variance (ANOVA) and Tukey's test. Results: Three-way ANOVA revealed significant interactions between time, type of composite, and storage condition (p = 0.001). Tukey's multiple comparison test revealed significant reductions in FS of all composites after 6 months and 1 year of storage in distilled water compared to dry condition. Conclusions: Filtek P90 showed the highest and GC Kalore showed the lowest FS after 1 year storage in distilled water. The immediate high strength of Filtek Z250 significantly decreased at 1 year and its final value was lower than that of Filtek P90.

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참고문헌

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피인용 문헌

  1. Mechanical Degradation of Different Classes of Composite Resins Aged in Water, Air, and Oil vol.2019, pp.2314-6141, 2019, https://doi.org/10.1155/2019/7410759
  2. Color stability of nanohybrid composite resins in drinks vol.18, pp.None, 2019, https://doi.org/10.20396/bjos.v18i0.8657327
  3. Ageing of Dental Composites Based on Methacrylate Resins—A Critical Review of the Causes and Method of Assessment vol.12, pp.4, 2017, https://doi.org/10.3390/polym12040882
  4. Changes in color and contrast ratio of resin composites after curing and storage in water vol.33, pp.8, 2017, https://doi.org/10.1016/j.sdentj.2021.02.002