When is a bone graft needed for implants?

For oral surgeons and prosthodontists managing implant cases, the graft decision lives upstream of the prosthetic workflow. A CBCT showing less than 1 mm of buccal plate or inadequate vertical height at the crest usually means grafting is non-negotiable before fixture placement. The posterior maxilla is the most common site, where sinus lift procedures are required when residual bone height falls below roughly 4-6 mm. Getting that measurement right at the planning stage prevents the kind of fixture failure that resets the entire case timeline.

The prosthetic lab enters the picture earlier than most clinicians expect. Surgical guide design, provisional planning, and final abutment geometry all depend on the anticipated post-graft ridge position. At Dani Dental, cases that include a graft phase are flagged at intake so the digital workflow accounts for the healing window. That means the surgical guide, the provisional, and the final restoration are staged and sequenced before the first incision, not after the fixture is already placed.

Communication between surgeon and lab during the graft phase prevents the most common source of delay: prosthetic redesign after the site heals differently than expected. Cases that arrive with pre-graft CBCT data and a documented treatment plan allow the technician assigned to the case to flag fit risks early, rather than discovering them at the impression stage. That one conversation typically saves 2-3 weeks on the back end of a full-arch case.