Long-term flexural strength of three direct aesthetic restorative materials

Journal of Dentistry
M A AzillahG J Pearson

Abstract

This investigation evaluates the long-term flexural strength behaviour of three different glass-ionomer cement (GIC) based materials. The materials under investigation were a conventional GIC (Opusfil), a metal-reinforced GIC (Opus Silver) and a resin-modified GIC (Fuji II LC). Flexural strength specimens of the materials were prepared according to the relevant manufacturers' instructions for clinical use. After 10-min maturation at 37 degrees C, the specimens were placed in water, also at 37 degrees C, until required for testing. Specimens were tested under four-point bend at intervals between 7 and 130 days after manufacture. Opusfil increased in strength up to day 56, but was significantly weaker after this time. Opus Silver was strongest on day 7, although there was no further decline in strength after day 14. Fuji II LC increased in strength up to day 14, but there was deterioration in strength after day 100. Opus Silver had the highest early strength of the three materials, but after day 7 there was no significant difference in strength between the three materials under test. The three cements tested did not exhibit the continued increase in strength with time that has been attributed to glass-ionomer cements. Each materi...Continue Reading

References

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Citations

Jul 11, 2001·Dental Materials : Official Publication of the Academy of Dental Materials·L MusanjeB W Darvell
Aug 7, 2003·Dental Materials : Official Publication of the Academy of Dental Materials·Erik Asmussen, Anne Peutzfeldt
Apr 5, 2013·Operative Dentistry·M ChangP Yaman
Jan 12, 2005·Journal of Oral Rehabilitation·Y GömeçF Koray
Jan 22, 2003·Journal of Oral Rehabilitation·A U J Yap, S H Teoh
May 7, 2016·Journal of Applied Biomaterials & Functional Materials·Emre KorkutMustafa Altunsoy
Jun 15, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Chirayu RuengrungsomJoseph E A Palamara

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