Effect of water storage on flexural strength of silorane and methacrylate-based composite resins
Restorative Dentistry & Endodontics
;
: 309-315, 2017.
Article
Dans Anglais
| WPRIM
| ID: wpr-16977
ABSTRACT
OBJECTIVES:
This study assessed the effect of water storage on the flexural strength (FS) of low shrinkage composites. MATERIALS ANDMETHODS:
A total of 165 bar-shaped specimens (2 × 2 × 25 mm) 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.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Polymères
/
Eau
/
Résines composites
/
Résines silorane
langue:
Anglais
Texte intégral:
Restorative Dentistry & Endodontics
Année:
2017
Type:
Article
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