Direct experience with one or more: adhesives, composites, resin cements, GIC / RMGI, hydraulic cements, MTA, bioceramics, bioglass, silicates, zirconia, desensitizers, bioactive remineralization systems, or adjacent technologies. Familiarity with relevant characterization and testing: rheology/viscosity, FTIR conversion, depth of cure, mechanical testing (flexural / compressive), water sorption / solubility, radiopacity, aging / thermocycling, ion release.