Provides requirements for dental resin-based restorative materials suitable for mechanical mixing, hand-mixing, or external energy activation, and for direct restoration of class III, IV and V cavities in teeth, i.e. class B materials. Excludes requirements for materials for restoration of occlusal surfaces, i.e. class A materials or materials designed to prevent caries. BS AMD 7513 AND 8267 RENUMBER THIS STANDARD TO BS EN 24049