Abstract: The invention relates to a method of applying an orthodontic aid to at least one tooth in a row of teeth. A cast of the row of teeth is made by means of molding and counter-molding. The aid is temporarily secured to the cast in the desired position. A deformable layer of material is applied to the cast with aid, and this layer is deformed to conform to the shape of the cast with aid and thus a mold is formed. The mold with aid is positioned on the row of teeth and the bonding agent applied for securing the aid is allowed to harden in a controlled manner. Then the mold is removed, and the aid remains behind, secured to the row of teeth by means of the bonding agent. According to the invention prior to placing the mold with the aid on the row of teeth, an adhesive layer is applied to at least a part of the surface of the mold, that is brought into contact with the row of teeth. This adhesive layer has weaker adhesive strength than the bonding agent for securing the aid to the row of teeth.