An implant plan depends partly on the bone available at the proposed site. Some patients are offered additional surgery to create conditions suitable for implant placement.
In the upper back jaw, the sinus can limit available bone height. A sinus augmentation procedure raises the sinus floor and adds graft material to support the planned treatment. It is a surgical intervention, not a routine requirement for every missing upper tooth.
Ask why the procedure is being recommended, which graft material is proposed and whether an alternative plan is possible. Discuss healing, complications, extra appointments and the effect on the total cost.
Get written postoperative instructions and a contact route for concerns. If you are planning dental tourism, ask how complications will be assessed after you return home. The suitability and timing of an implant should be confirmed by the treating clinician rather than assumed from an online quotation.