<prompt> Coupling agent between filler particle and resin is:Benzoyl peroxideVinyl silaneBenzoin etherHydroquinone  <response>: Coupling agent : A bonding agent applied to the surfaces of reinforcing particles filler to ensure that they are chemically bonded to the resin matrix. Organo-silane compounds are the more common class of dental composite coupling agents. Although titanates and zirconates can be used as coupling agents, organosilanessuch as γ-methacryloxypropyl tri-methoxysilane are used most commonly.Phillips 12 ed page no. 275,286 