Abstract
Ion-releasing polymeric restorative materials seem to be promising solutions, due to their possible anticaries effect. However, acid functional groups (monomers) and glass filler increase hydrophilicity and, supposedly, water sorption. The purpose of the study was to evaluate the influence of water sorption of polymeric materials on the stress state at the restoration-tooth interface. Beautifil Bulk Fill Flow, Beautifil Flow Plus F00, Beautifil Flow F02, Dyract eXtra, Compoglass Flow, Ionosit, Glasiosite, TwinkiStar, Ionolux and Fuji II LC were used for the study. The stress state was measured using photoelastic analysis after: 0.5, 24, 72, 96, 168, 240, 336, 504, 672, 1344 and 2016 h. Moreover, water sorption, solubility and absorption dynamic were assessed. The water sorption, solubility and absorption dynamic of ion-releasing restorative materials are material dependent properties. The overall results indicated that the tested restorative materials showed significant stress decrease. The total reduction in contraction stress and water expansion stress was not observed for materials with low value of water sorption (Beautifil Bulk Fill, Dyract eXtra, Glasionosit and Twinky Star). The photoelastic method turned out to be inadequate to evaluate stress changes of resin modified glass-ionomer cement (RMGI, Fuji II LC and Ionolux).
Highlights
Development in dentistry is driven by the desire to create a restorative material exhibiting high aesthetics, biocompatibility, durability and permanent adhesion to tooth structure [1]
The purpose of the study was to evaluate the influence of water sorption of selected ion-releasing polymeric restorative materials on the stress state at the restoration-tooth interface
Ion-releasing restorative materials are a substantial part of modern restorative dentistry
Summary
Development in dentistry is driven by the desire to create a restorative material exhibiting high aesthetics, biocompatibility, durability and permanent adhesion to tooth structure [1]. Many products have been developed aiming at meeting these expectations. Dentists perceive fluoride-releasing restorative materials as being very attractive due to their advertised multifunction performance. Besides esthetic and restoring function, these materials could prevent or arrest the progression of caries lesions [2]. The glass-ionomer cements (GICs) release fluoride ions and are biocompatible, they exhibit inherent drawbacks such as low compressive strength, early moisture sensitivity and inadequate esthetics [3,4]. Resin modified glass-ionomer cement (RMGIC) was designed to combine
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
