Spee-Dee Build-Up, 25mL automix cartridge + 20 automix tips Contains No Bisphenol A, No BIS-GMA, No BPA Derivatives Formulated for one-step post cementation and core build up, ensuring a homogenous, one-piece internal structure. Cuts like dentin or your money back! Spee-Dee Build Up is hard like dentin. Rotary instruments transition smoothly from tooth to Spee-Dee and do not ditch, gouge, gum up or chatter. The unique moisture tolerant chemistry has self-adhesive and self-etching properties. Etching dentin and the use of bonding agents are optional when there is retention form in the preparation.