Warning – Do not attempt to repair your dentures by yourself with glue. Super glue does not belong in your mouth. Though the glue used in surgery is a cyanoacrylate, it is not the same as the super glue you buy off the shelf. Medical super glues are octyl cyanoacrylates. Super glue is an ethyl cyanoacrylate or methyl cyanoacrylate which can break down in the body into toxins.