The invention relates to an adhesion pad for fastening an orthodontic aligner, wherein the adhesion pad comprises a substantially flat structure, which can be applied to the surface of at least one tooth, and wherein said adhesion pad has at least one side having a modified surface, which increases the adhesion of the adhesion pad to the aligner. Alternatively, the invention relates to an adhesion pad for fastening an orthodontic aligner, wherein the adhesion pad comprises a substantially flat structure and has a modified surface, which strengthens the adhesion of the adhesion pad to the tooth surface, and wherein said flat structure a) can be arranged on the inner surface of said aligner or b) is an integrated region of said aligner that protrudes on the inside of the aligner.
