A dental implant fixture intended for installation in maxillary and mandibular posterior regions where bone is cancellous internally and cortical externally characterized by buccal and lingual cortical plates bounding a relatively large body of cancellous bone. The body of the implant...http://www.google.com/patents/US5695336?utm_source=gb-gplus-sharePatent US5695336 - Dental implant fixture for anchorage in cortical bone
