Conclusions The addition of Nb2O5 to the CS resulted in a material biocompatible and with adequate characteristics regarding radiopacity and final setting time and provides an alkaline pH to the environment. Furthermore, the particle size did not significantly affect the physicochemical and biological properties of the calcium silicate-based cement. Clinical relevance Niobium pentoxide can be used as radiopacifier for the development of calcium silicate-based materials. (Source: Clinical Oral Investigations)
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