New 'Bioactive' fillings aim to heal teeth from within

This study aims to see if a new type of 'bioactive' filling material is better than standard fillings at protecting the nerve and promoting natural repair in adult teeth with very deep cavities. Researchers will compare the two approaches in 66 patients over two years, using 3D X-rays to measure how well the tooth heals underneath the filling. The goal is to find a better way to save teeth that might otherwise need more invasive treatment like a root canal.