Placement of implants in the posterior maxilla is challenging due to the quality and quantity of available native bone and the presence of the maxillary sinus.
The primary reason for using implants in the pterygoid region is the availability of dense cortical bone for implant engagement. Surgical placement of pterygoid implants is straightforward for an experienced clinician and can be performed under local anesthesia in a dental clinic. This can shorten the treatment time and allows immediate loading of the pterygoid implant.
Pterygoid implants are especially helpful in upper complete arch fixed implant-supported prosthetic rehabilitation when four implants do not adequately provide distribution of forces and prosthetic support.
Pterygoid implants help to overcome the need for maxillary sinus elevation and bone grafting procedures and may simplify the surgical phase of prosthodontic treatment. Pterygoid implants can also shorten the treatment time and allow immediate function for the edentulous patient.
Implants placed in the compact bone of the pterygomaxillary region shows ossteogration and provides retention and stability. Pterygoid implant provides a reasonable alternative to 3-D maxillary reconstruction, sinus lifts, and bone augmentation technique. Many authors have reported success rates of pterygoid implants ranging from 90% to 100% after follow-up period ranging from 1 to 12 years.
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