TY - JOUR ID - TI - Water sorption of light–cured composites AU - Ammar Kh Al–Nori PY - 2005 VL - 5 IS - 1 SP - 1 EP - 5 JO - Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان SN - 18121217 19980345 AB - The aim of the present research was to study the percentagewater sorption and solubility of Esthet compositeresin based on an ethoxylated bisphenol A glycol dimethacrylate(Bis–EMA) and Heliomolar composite resin basedon bisphenol A glycol dimethacrylate (Bis–GMA). Six specimenswere prepared for each material using aluminum disc 15mm in diameter and 1 mm in thickness between two glassslides; then they were light cured for 80 seconds on each side.Percentage water sorption and solubility were measured afterone week and one month. The results showed that water sorptionafter 1 week for Esthet composite and Heliomolar compositewere 0.433 and 1.12, respectively and solubility were0.074 and 1.066, respectively; while water sorption after 1month were 0.517 and 2.57, respectively and solubility were0.176 and 2.689, respectively.It could be concluded that the percentage sorption andsolubility of composite based on Bis–EMA were significantlylower than that based on Bis–GMA.

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