Stain-resistant no-mix orthodontic adhesive

An orthodontic adhesive composition that becomes reactive and sets to a stain resistant material when a layer of one component is placed in contact with a layer of the other component, which consists essentially of:

• (a) a first component having a relatively low viscosity and which contains an acrylic or methacrylic diester of ethoxylated bisphenol-A, an acrylic or methacrylic diester of an alkanediol, and benzyl acrylate or methacrylate;
• and
• (b) a second component containing a filler and an acrylic or methacrylic diester of ethoxylated bisphenol-A, an acrylic or methacrylic diester of an alkanediol, and benzyl methacrylate or acrylate, said filler being present in an amount within the range of from about 50 to about 80 weight percent of said second component,
• wherein, one of said first and second components contains a peroxide catalyst and the other of said components contains a tertiary amine activator for said peroxide catalyst.