novacryl L Self-Curing Acrylic Temporary Crown and Bridge Resin, C4 Shade, Powder Only, 125g Bottle. A co-polymer allowing significantly more color stable for temporary crowns, bridges, inlays, and onlays. Ideal for laboratory use. Quick setting time. Creates a durable temporary crown/ bridge in 6-8 minutes. Results in a natural and durable temporary for patient satisfaction.