1. Poor vertical bone availability
This may be due to excessive pneumatization of the sinus, bone loss in the edentulous area or a combination of both situations.
A long time without teeth in the area, periodontal diseases, age, sex, use of removable prostheses in the area… can be the cause of bone loss.
2. Atraumatic sinus lift
This technique is used when the amount of missing bone is minimal. It consists of elevating the floor of the maxillary sinus using the holes created in the drilling to place the implants. It is done with blunt-tipped instruments called osteotomes, which gently push on the sinus membrane.
3. Traumatic sinus lift or lateral window sinus lift
An opening is made in the posterior region of the upper jaw where the sinus membrane is located, which is carefully pushed into the cavity. The space obtained will be filled with synthetic bone that will become your own over time.
In 6 months you will have enough bone to place dental implants in a stable manner.
4 iRaise method.
iRaise is a new method that requires a simpler surgery. The sinus lift is performed through the same hole in which the implants are to be placed. This is thanks to the shape of the iRaise implant. The implant has a channel through which a saline solution is first injected to loosen the sinus membrane and then the bone filler material in the form of a gel. After about 6 months the implant is ready to support the crown.