Summary

Zygomatic implants are used for prosthetic rehabilitation of the severely atrophic maxilla. The original surgical technique (OST) at modum Brånemark prescribed an intra-sinus pathway of the implant from a palatal site entrance, and the preparation of an antrostomy to allow visualization during insertion of the implant. However, the most concave is the maxillary anterior wall, the more marked palatal position of the implant head will be attained. If the maxilla is very atrophic, the palatal entrance will occur through a thin cortical bone. Those situations will frequently end into bulky prosthetic constructions, impaired hygiene and eventual late sinusal complications. To overcome the OST drawbacks, different surgical approaches, including the extra-sinus technique, will be described. A novel protocol aiming at promoting a patient-specific therapy named Zygoma Anatomy- Guided Approach(ZAGA), is explained with help of a clinical case. Using this method allows avoiding the opening of a window or slot into the lateral wall of the maxillary sinus previous to implant placement. The surgical management of the implant site is guided by the anatomy of the patient. Conservation of eventual remaining alveolar bone is critical. The www. zygomazagacenters. com(ZZC) is formed by an international network of professionals trained and certified in the ZAGA philosophy. Due to the experience gathered, the ZAGA Center becomes the true expert in their area or city for the treatment of maxillary atrophy. The main function of the ZAGA Center is to perform the surgery according to the ZAGA method and to equilibrate an immediate fixed prosthesis.