Abstract
The microhardness, water absorption and solubility characteristics of five fissure sealant materials have been investigated. The sealants studied consist of three polymeric materials and two quasiinorganic cements. The two classes of material, namely polymers and cements, differed markedly in their behaviour. The polymers were broadly similar in their water solubilities and absorption characteristics but one material was less soluble and absorbed less water than the other two. The microhardness of the polymeric materials appeared to increase with time but this effect was offset by the plasticizing action of absorbed water during storage. The cement behaviour reflected differences in their chemical structure-the glass-ionomer cement decreased in hardness whilst a polycarboxylate cement showed an increase; furthermore differences in water solubility and absorption for the two materials were also apparent.
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
