The invention relates to an adapter sleeve for accommodating fastening or assembly elements of dental implantology for insertion into adapter bores of a dental model, wherein a simplified arrangement of said adapter sleeves in milled dental models is achieved by means of a standardisations. According to the invention, this is achieved by means of an adapter sleeve (1) for accommodating fastening or assembly elements of dental implantology for insertion into adapter bores (2) of a dental model, wherein an outer geometry matched to a standardised adapter bore (2) introduced into the dental model is constant and standardised independently of the geometry of the fastening or assembly elements to be accommodated, and an inner geometry varies in coordination with the geometry of the fastening or assembly elements to be accommodated, wherein retaining means (3) corresponding to analogous receptacles (4) of the adapter bore (2) are arranged on the outer geometry of the adapter sleeve (1) for the rotationally fixed insertion of the adapter sleeves (1) into the adapter bores (2).
