Why does the sinus matter for the plan?
The maxillary sinus is an air-filled cavity above the upper premolars and molars. After these teeth are lost, resorption of the ridge and expansion of the sinus can reduce the available bone height.
A sinus lift consists of raising the sinus membrane to create space for reconstruction underneath it. It concerns the back areas of the upper jaw.
Crestal or lateral approach
For some limited augmentations, access is through the site planned for the implant: this is the crestal approach. A lateral approach reaches the membrane through a window in the wall of the upper jaw when the situation requires it.
The choice is not based only on a measured height: the sinus anatomy, the shape of the site and the possibility of stabilising the implant also count. The implant is placed at the same time or in a second stage.
A bone and sinus assessment
The CBCT (3D scan) helps examine the bone, any septa and the appearance of the sinus. Mention sinusitis, nasal symptoms or previous ENT surgery. A further opinion may be needed before the graft.
The reconstruction material and technique are discussed at the consultation. Piezosurgery may be used for the bone work; it does not eliminate the risk of tearing the membrane.
Maturation, precautions and risks
The maturation phase lasts several months. When the implant has to be delayed, 4 to 6 months of maturation are often planned; the timing depends on the reconstruction and healing.
Swelling, bruising and discomfort are possible. Risks include in particular perforation of the membrane, infection, sinusitis, loss of the graft or a communication between the mouth and the sinus.
The instructions set out precautions against pressure build-up: blowing your nose, sneezing, air travel, diving and physical activity. How long they apply is personalised.
Read the follow-up advice · Read the sinus lift consent form (PDF)
What if a short implant were possible?
In some situations, a short implant makes it possible to use the available bone without increasing its height. This option should be compared with reconstruction, based on your anatomy and the future prosthesis. Discover Bicon short implants and their indications.
This general information helps you prepare for your consultation. Treatment, its risks and aftercare instructions are adapted to your situation by the surgeon.