When the back of the upper jaw loses bone, most patients are told the same thing: before you can have implants, you need a sinus lift or a graft, then several months of healing. There is another route. Pterygoid implants reach past the thin, resorbed area of the posterior maxilla and anchor into dense bone further back, which means the sinus is left alone and no graft is needed. For the right patient, that changes the whole timeline of treatment.<\/p>\n
The pterygoid implant is longer than a standard fixture and it is placed at an angle. Instead of relying on the soft, pneumatised bone under the sinus floor, it passes through the maxillary tuberosity and engages the pterygoid plate and the surrounding cortical bone at the back of the jaw. That region stays dense even when the ridge above it has all but disappeared. A single well-placed pterygoid implant can provide the rear support for a full-arch bridge, so the prosthesis does not have to end in a long unsupported section (a cantilever) that stresses the front implants.<\/p>\n
A sinus lift raises the membrane lining the sinus and adds graft material to build a floor thick enough to hold a conventional implant. It works, but it adds a separate surgical stage, carries its own risks (membrane perforation, infection, graft that does not integrate), and usually means waiting months for the graft to mature before implants can even be placed. Bone grafting to widen or heighten a ridge adds similar time and morbidity.<\/p>\n
Pterygoid implants sidestep that. Because anchorage comes from bone that is already there, treatment is described in the literature as graftless: no augmentation of the sinus, no donor bone, no long maturation phase. Reviews of the technique note that conventional approaches such as sinus floor elevation and onlay grafting tend to bring longer treatment times and more complications, which is precisely the burden pterygoid placement is meant to remove.<\/p>\n
Survival figures for pterygoid implants are consistently strong for a technique of this kind. A systematic review and meta-analysis of 1,893 pterygoid implants in 634 patients reported a mean survival of 94.87% [1]. A larger 2024 systematic review pooling 3,053 pterygoid implants across nearly 2,000 patients found a 10-year cumulative survival of 92.5%, and the related maxillary tuberosity implants reached 96.9% [2]. A separate 2024 meta-analysis of 768 implants put mean survival at 97.43% [3]. Numbers like these place the technique in the same broad range as more familiar implant procedures, with the advantage of avoiding a graft.<\/p>\n
Two caveats matter, and we would rather state them plainly. First, much of the published data is retrospective, so the evidence base is not as controlled as one would like [1]. Second, this is a technically demanding placement; the same reviews stress that outcomes depend heavily on the surgeon's experience and on careful planning [3]. It is not a shortcut for an inexperienced operator.<\/p>\n
Pterygoid implants tend to be considered when:<\/p>\n