HardCore Core Build-Up Material, Dual-Cure, Handmix Paste Standard Kit, Off-White, 1/Pk, HCAbout this product Utilizes a 2 Paste system High radiopacity for easy diagnosis Non slumping formula Use with core forms HardCore Core Build Up Material is a dual cure, radiopaque material with outstanding fluoride release. The super strong restorative utilizes a base and catalyst two paste delivery system that repairs broken and fractured teeth. It mixes easily, is non slumping, and sets with exceptional hardness. HardCore Core Build Up Material