Introduction and Development of Zygoma Implants - Zygoma implants anchor into the zygomatic bone instead of the maxilla. - They are used when maxillary bone quality or quantity is insufficient for regular dental implants. - Inadequate maxillary bone volume can be caused by bone resorption or pneumatization of the maxillary sinus. - Standard implant placement in the posterior upper jaw requires a minimum bone height of 10mm for acceptable survival. - Zygoma implants were introduced in the late 1990s by Dr. Per Ingvar Branemark, known as the Father of Dental Implantology. - They are used for dental rehabilitation in patients with insufficient bone in the posterior upper jaw. - The zygomatic bone provides denser and more cortical anchorage compared to posterior maxillary bone. - Zygoma implants allow for immediate placement of a prosthesis due to sturdy anchorage and wide stress distribution. - The implants are available in lengths ranging from 30 to 52.5mm, with a 45-degree angle for prosthesis attachment.

Indications for Zygoma Implants - Zygoma implants can be used in patients without any teeth in the upper jaw. - They are suitable for patients with heavily broken down or mobile teeth due to conditions like aggressive periodontitis. - Zygoma implants are an option for patients with insufficient bone in the posterior upper jaw caused by aging, tumor resection, trauma, or atrophy. - They provide a solution when conventional implants are not feasible due to inadequate bone volume. - The reported success rate of zygoma implants worldwide is 97-98%.

Complications Associated with Zygoma Implants - Sinusitis is a potential complication of zygoma implants. - Paresthesia in the cheek region can occur. - Oro-antral fistula is another complication that may arise. - These complications should be considered when evaluating the risks and benefits of zygoma implant placement. - Proper patient selection and surgical expertise are crucial in minimizing complications.

Bone Grafting and Sinus Lift Procedures - Bone grafting and sinus lift procedures can be performed to increase bone volume. - However, they have disadvantages such as prolonged treatment time and graft rejection. - Zygoma implants provide an alternative solution without the need for these procedures.

References - Aparicio, Carlos Ed. 'Zygomatic Implants: The Anatomy-guided Approach.' - Malevez, Chantal et al. 'Use of zygomatic implants to deal with resorbed posterior maxillae.' - ten Bruggenkate, Chris M. et al. 'Maxillary sinus floor elevation: a valuable pre-prosthetic procedure.' - Davo, Ruben et al. 'Immediate function in the atrophic maxilla using zygoma implants: A preliminary study.' - Kato, Yorihisa et al. 'Internal Structure of Zygomatic Bone Related to Zygomatic Fixture.'