For simplicity powered by performance, rely on this enhanced, next-generation formula in an easy-to-use delivery system. Except for 2- or 3-unit Maryland bridges and 3-unit inlay/only bridges. Selective etching is required to increase surface area for bonding. Strong and moisture-tolerant. 3M ESPE 56858 RelyX Unicem 2 Automix Self-Adhesive Resin Cement, Value Pack, Translucent. Convenient dispensing. Time-saving - not etching**, priming or bonding. Virtually not post-operative sensitivity. Easy removal of excess. Optimal consistency.