In accordance with an aspect of the invention, a medical method of affixing an element to a surface of dentine, tooth enamel, bone tissue, or corresponding substitute material is provided, the method comprising the steps of:Providing an attachment composition, the attachment composition comprising a mixture of: A thermoplastic component； andA hardenable (for example curable) component, the hardenable component being different from the thermoplastic component；Positioning the attachment composition relative to the surface of dentine, tooth enamel, bone tissue, or corresponding substitute material； andActivating the attachment composition to attach to the surface or to attach to the element positioned relative to the surface；Wherein the step of activating the attachment composition comprises activating the attachment composition by means of mechanical vibration.
