EQUIA Restorative System GC America Inc. EQUIA combines easy handling and simple placement with durability and esthetics. GC America’s EQUIA self-adhesive posterior restorative includes GC Fuji IX GP EXTRA and G-COAT PLUS to create an easy-to-use system. GC America describes GC Fuji IX GP EXTRA glass ionomer as a packable and nonsticky material that can be placed in a single step with no layering required. EQUIA does not require a bonding agent and will self-adhere to moist dentin and enamel. In addition, the system provides high fluoride release at placement and over time with recharge.