A method for generating a virtual model of a subperiosteal dental implant device. The method comprises: obtaining a virtual mouth model of a patient providing a three- dimensional representation of at least a section of a jaw bone of a patient, using a non-invasive modelling method； positioning at least one replacement tooth in relation to the section of the jaw bone defined by the virtual mouth model； positioning at least one implant head at a respective implant position； and designing and generating a virtual model of the subperiosteal dental implant device having a shape at least partially derived from a shape of the section of the jaw bone defined by the virtual mouth model and at least a portion of each one of the at least one implant head extending from the subperiosteal dental implant device at the respective implant position.
