Zygoma implants (or Zygomatic implants) are different from conventional dental implants in that they anchor into the zygomatic bone (cheekbone) rather than the maxilla (upper jaw). They may be used when maxillary bone quality or quantity is inadequate for the placement of regular dental implants. Inadequate maxillary bone volume may be due to bone resorption as well as to pneumatization of the maxillary sinus or to a combination of both. The minimal bone height for standard implant placement in the posterior region of the upper jaw should be about 10 mm to ensure acceptable implant survival. When there is inadequate bone available, bone grafting procedures and sinus lift procedures may be carried out to increase the volume of bone. Bone grafting procedures in the jaws have the disadvantage of prolonged treatment time, restriction of denture wear, the morbidity of the donor surgical site and graft rejection.