ConsEuro, London, İngiltere, 14 - 16 Mayıs 2015, cilt.19, ss.1745-1746
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-