Replacing upper back teeth with implants has a unique challenge: the maxillary sinus, an air-filled space that sits just above the roots of the upper molars and premolars. When those teeth are lost, the sinus often expands downward while the bone below it shrinks, leaving too little height for an implant. A sinus lift, also called sinus augmentation, solves this by adding bone in the right place.
Upper jaw bone is naturally softer than lower jaw bone, so implants there rely on having enough length of bone to grip. After an upper molar is removed, two things happen at once: the ridge resorbs from below, and the sinus floor tends to drop into the space the roots once occupied. A 3D scan shows exactly how much bone remains between the gum and the sinus, which determines whether a lift is needed and which technique is most appropriate.
When only a few millimetres of extra height are needed, a crestal or internal sinus lift can be done through the same opening used for the implant. The sinus membrane is gently raised from below, graft material is added, and the implant is often placed in the same visit. When more height is needed, a lateral window technique is used: a small opening is made in the side of the jawbone, the membrane is lifted, and the space is filled with graft material. The implant may be placed at the same time or after the graft has matured.
Swelling and some bruising of the cheek are common for a few days. Some patients notice mild nasal congestion or a small amount of blood from the nose on the treated side. Pain is usually manageable with recommended medication. The most important instruction is to protect the sinus while it heals, which means avoiding anything that creates pressure changes in the nose and sinus.
For the first couple of weeks, avoid blowing your nose forcefully, sneeze with your mouth open, and do not drink through a straw or smoke. Heavy lifting, strenuous exercise and swimming should also be paused as advised. Air travel and diving may need to be postponed, so check with your dentist before booking flights. These precautions help keep the membrane intact while the graft integrates.
Once the graft has matured and the implant has integrated, the restored tooth functions like any other implant. Sinus augmentation is a well-established procedure with a strong track record when patients are well selected and follow aftercare guidance. It allows people who were once told they were not candidates for upper implants to enjoy fixed, natural-feeling teeth.
It is a minor oral surgery procedure carried out under local anaesthetic in the dental chair. The internal approach is relatively quick; the lateral window approach takes longer but is still routinely performed in clinic.
Flying is usually discouraged for around one to two weeks because cabin pressure changes can stress the healing sinus membrane. Your dentist will advise you based on the type of lift performed.
Only a 3D scan of the upper jaw can confirm it. If the bone height below the sinus is insufficient for a standard implant, your dentist will recommend augmentation or discuss alternatives such as shorter implants.
Get a 3D assessment of your upper jaw and find out your implant options. Learn more about dental implants in Al Ain.
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