A zygomatic dental implant comprising: a generally cylindrical body having a coronal portion and an apical portion , the apical portion for anchoring the zygomatic dental implant in zygoma bone of a patient, the generally cylindrical body having a main-central axis; an interior threaded bore formed in the coronal portion of the generally cylindrical body 110) for receiving a screw configured to removably hold an abutment in engagement with the zygomatic dental implant , the interior threaded bore having a bore-central axis; and an asymmetrical external feature on at least a portion of a first side of the generally cylindrical body such that the asymmetrical external feature is configured to directly engage alveolar bone of the patient, the asymmetrical external feature including a plurality of circumferentially extending grooves , wherein: (i) a first portion of the plurality of circumferentially extending grooves includes circumferentially extending grooves having a circumferential length that decreases apically, and (ii) a second portion of the plurality of circumferentially extending grooves includes circumferentially extending grooves having a circumferential length that increases apically, wherein the first portion of the plurality of circumferentially extending grooves is adjacent to and apical of the second portion of the plurality of circumferentially extending grooves. a generally cylindrical body having a coronal portion and an apical portion , the apical portion for anchoring the zygomatic dental implant in zygoma bone of a patient, the generally cylindrical body having a main-central axis; an interior threaded bore formed in the coronal portion of the generally cylindrical body 110) for receiving a screw configured to removably hold an abutment in engagement with the zygomatic dental implant , the interior threaded bore having a bore-central axis; and an asymmetrical external feature on at least a portion of a first side of the generally cylindrical body such that the asymmetrical external feature is configured to directly engage alveolar bone of the patient, the asymmetrical external feature including a plurality of circumferentially extending grooves , wherein: (i) a first portion of the plurality of circumferentially extending grooves includes circumferentially extending grooves having a circumferential length that decreases apically, and (ii) a second portion of the plurality of circumferentially extending grooves includes circumferentially extending grooves having a circumferential length that increases apically, wherein the first portion of the plurality of circumferentially extending grooves is adjacent to and apical of the second portion of the plurality of circumferentially extending grooves. (i) a first portion of the plurality of circumferentially extending grooves includes circumferentially extending grooves having a circumferential length that decreases apically, and (ii) a second portion of the plurality of circumferentially extending grooves includes circumferentially extending grooves having a circumferential length that increases apically, wherein the first portion of the plurality of circumferentially extending grooves is adjacent to and apical of the second portion of the plurality of circumferentially extending grooves. <EOS>