What is a Sinus Lift Procedure?
There are air compartments within the skull, connected with the nasal passageways. These are called sinuses. Above the upper back teeth is the maxillary sinus (one on each side of the skull). When we wish to place implants in this area, sometimes there is insufficient height of bone available between the mouth and the (maxillary) sinus in which to place them. If this is the case, a Sinus Lift procedure is performed. The procedure is meant to cause the growth of more bone in the bottom of the sinus in order to hold the implants.
Below: xrays which are part of a CT scan, first of all providing a view from the side. The accompanying diagrams provide a cross-sectional view from in front (i.e. the right side of the drawing is towards the outer cheek side of the jaw and the left side of the drawing is towards the middle of the mouth).