The repair kit primes, protects, opaques, seals, finishes and polishes. No bonding agents required. The latest generation of porcelain repair products uses First-Coat in place of silane. First-Coat is a solvent-free resin with strong bonds to ceramic and metal. Eliminates metal and ceramic primers, silane and bonding agents. Compatible with restorative composites. No solvents, no modifiers, no mixing, no mess. Can be cured with all curing lights.