Sinus lift surgery is one of the most technique-sensitive procedures in implant dentistry — and one of the areas where Dr. Garg’s surgical expertise and research have helped define how it’s done.
When patients are told they can’t have dental implants in their upper back teeth — their upper premolars or molars — the reason is almost always the same: not enough bone.
In the upper posterior jaw, the maxillary sinuses sit just above where the roots of upper back teeth used to be. After those teeth are lost, bone resorption occurs from below while the sinus can simultaneously expand downward. The result is a narrow corridor of bone — sometimes only a few millimeters — that is insufficient to place and support a dental implant.
Sinus lift surgery, also called sinus augmentation or a sinus graft, solves this problem. By gently elevating the sinus membrane and placing bone grafting material in the space created, the procedure builds the vertical bone volume needed to support implants in one of the most commonly challenging areas of the mouth.
Dr. Garg has performed, researched, and taught sinus lift surgery for decades. It is a core component of the advanced bone grafting protocols that define his surgical practice and educational legacy.
Understanding the Sinus and Why It Matters
The maxillary sinuses are air-filled cavities located above and behind the cheekbones, on either side of the nose. Their floors sit at a variable height above the upper jaw — in patients with healthy upper molar roots in place, there is typically adequate bone between the sinus floor and the crest of the ridge to support implants.
Once upper molars and premolars are lost, two things happen simultaneously:
- The alveolar ridge resorbs, reducing bone height from below
- In many patients, the sinus gradually expands downward (a process called pneumatization), reducing available height further
After several years of tooth loss, the gap between the sinus floor and the top of the ridge may be just 2–4 mm — less than half of what most dental implants require. Without intervention, implant placement in this region is not possible.
Sinus Lift Approaches
There are two primary surgical approaches to sinus lift surgery. The appropriate technique depends on how much existing bone is present at the site.
Lateral Window Sinus Lift (External Approach) The more traditional technique, used when there is minimal existing bone — typically less than 4–5mm. A small opening is created in the side of the upper jaw to access the sinus cavity directly. The sinus membrane is carefully elevated and supported, and grafting material is packed into the created space. This technique allows for the addition of more grafting volume and is used for cases requiring significant vertical bone gain.
The lateral approach typically requires a healing period of 6–9 months before implant placement, though in cases with sufficient primary bone, implants can sometimes be placed simultaneously.
Transcrestal (Crestal) Sinus Lift (Internal Approach) Used when there is moderate existing bone — typically 5–7mm or more — the crestal approach reaches the sinus from above, through the same access point used for implant placement. It is less invasive than the lateral approach and allows for simultaneous implant placement in most cases.
Dr. Garg evaluates each case with 3D CBCT imaging to determine which approach is most appropriate — and to plan the procedure with the precision that a technique this sensitive requires.
Grafting Materials Used
The grafting material placed into the sinus space must be biocompatible, support new bone formation, and remodel into the patient’s own bone over time. Options include:
Autogenous bone — The gold standard; harvested from the patient’s own body (often elsewhere in the jaw). Has the highest biological activity but requires a second surgical site.
Allograft — Processed bone from a human donor source, rigorously screened and prepared. Widely used and well-supported by clinical evidence.
Xenograft — Typically bovine (bovine-derived) bone mineral. Provides excellent structural scaffolding and is one of the most commonly used materials in sinus procedures.
Alloplast — Synthetic bone substitute materials.
In many cases, a combination of materials is used. The use of PRP (platelet-rich plasma) and growth factor therapies in conjunction with sinus grafting — an area where Dr. Garg has conducted significant research and teaching — can enhance healing, improve graft integration, and reduce recovery time.
What to Expect After a Sinus Lift
Recovery from sinus lift surgery is manageable for most patients. Common post-operative instructions include:
- Avoiding nose blowing and sneezing with a closed mouth for a period after surgery, to prevent pressure changes that could displace the graft
- Taking prescribed medications for infection prevention and swelling management
- Soft diet during early healing
- Attending follow-up visits to monitor healing and confirm graft stability
Typical timelines:
- Lateral window sinus lift (without simultaneous implant placement): 6–9 months of healing before implant placement
- Lateral window sinus lift with simultaneous implant placement: 6 months to final restoration
- Crestal sinus lift with simultaneous implant placement: 4–6 months to final restoration
Following successful integration, the implant placement and restoration process proceeds in the same manner as any standard dental implant case. The implant restoration phase produces a crown or prosthetic that functions and feels like a natural tooth.
Sedation options are available for patients who prefer to be fully comfortable during the procedure.
Dr. Garg’s Expertise in Sinus Procedures
Sinus lift surgery is not a routine procedure for most dental practices — it requires specific surgical training, comfort with sinus anatomy, and careful patient selection. It is among the procedures most frequently taught in Dr. Garg’s advanced training programs, because it is simultaneously one of the most needed and most undertaught techniques in implant dentistry.
Dr. Garg has lectured on sinus augmentation at national and international dental conferences, authored textbook content on the subject, and personally trained thousands of dentists in the technique through his Garg Institute programs. When dentists want to learn how to do sinus lifts correctly, they take his course.
At Center for Dental Implants, patients receive this same expertise directly.
See what sets this practice apart and learn more about Dr. Garg’s background and credentials. For patients with bone loss beyond the sinus area, see our pages on Advanced Bone Grafting and Bone Loss and Dental Implants.
Don’t Let Sinus Anatomy Stand Between You and Implants
If you’ve been told you don’t have enough bone in your upper jaw, a sinus lift evaluation with Dr. Garg will give you a clear picture of what’s possible.