Spee-Dee Build-Up is a multi-purpose core and tooth build-up material. It's dual cure, fluoride releasing and radiopaque. Spee-Dee Build-Up is perfect crown preps. Rotary instruments transition smoothly from tooth to spee-dee, cut accurately and do not ditch, gouge, chatter or gum up. It bonds directly to core without post, repairs lost fillings and broken splints and patches broken cusps and porcelain.