Abstract
As a first step in developing a new polyalkenoate dental cement with superior mechanical strength and water durability, the setting characteristics of several experimental compounds were investigated by measuring the setting time.Vickers hardness, compressive strength and water durability in the lactate and borate buffer were also evaluated.The compounds were constituted by polyalkenoate solution, reinforcing inorganic fillers and calcium oxide as a reactor.Fired reactor systems containing sodium fluoride could control manipulation time and setting time of the cement.Vickers hardness of the set materials was higher than that of conventional polyalkenoate cement.The hardness of set materials using cryolite in stead of sodium fluoride was especially high.It was demonstrated that uniform distribution of fillers in the cement increased compressive strength, and water durability of set materials.The present study showed that decreasing the soluble component in set materials was important to increase the water durability of set materials.
