silane coupling agent.. used with porcelain to enhance wetability of bonding silane coupling agent: 1- used with porcelain to enhance wetability of bonding.*** 2- used with tooth and porcelain. Remove inlay and clean with alcohol. For porcelain only, place layer of silane coupling agent on fitting surface. Share This: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook