Magnets have been widely used in the field of dentistry for many years with some success, as they can be manufactured in small dimensions as retentive devices in overdenture technique, maxillofacial prosthesis. These magnets are retained are attached with remaining root structure which transfer the load to the remaining bone through periodontal ligament of the retained roots. In this article, the use of magnetic assembly in fabrication of mandibular overdenture on the retained roots and a conventional maxillary complete denture is discussed. The magnetic assembly consists of magnet and coping with a keeper on the remaining tooth structure. Key words: Dental magnetism, maxillofacial prosthesis, overdenture.