Comparison of silorane and conventional composites for water sorption and mechanical properties with adhesive coating

ConsEuro, London, Birleşik Krallık, 14 - 16 Mayıs 2015, cilt.19, ss.1745-1746, (Özet Bildiri)

The purpose of this in vitro study was to determine the influence

of water sorption on composite resins (3M Siloran, Kerr Sonicfill,

3M Z550, GC Kalore) with or without adhesive coating and its

effects on flexural strength, surface hardness, surface roughness.

Eight groups each containing ten discs (15mm diameter and 1mm

height) and bars (25mm x 2mm x 2mm) made of each composite

resin were made according to the manufacturer's instructions. Ad-

hesive coating were applied to the last four group by dentin ad-

hesive (3M Singlebond or 3M Silorane AS ). All the composites

kept at 37°C for 24 hours and then measured for water sorption,

flexural strength, surface hardness, surface roughness. At the sec-

ond phase of the study, discs and bars were immersed into water

for 90 days. Then they were thermocycled for 10000 times and

remeasured. Data were subjected to analysis of Oneway ANOVA

and Paired sample t test (P > 0·05).Different organic matrix types

of the composites caused different water sorption levels. The least

water sorption levels were observed at Silorane composite groups.

The least solubility levels were observed at Silorane and SonicFill

composite groups. The highest levels of flexural strength and

surface hardness were observed in SonicFill composite groups.

(p > 0.05).Within the limitation of this study, the water sorption

seem to affect the mechanical properties of the resin composite.

Adhesive coating has a limited water sorption reducement in com-

posite resin.