Sinus Lift for Dental Implants: What It Is & What to Expect

Editorially reviewed by the Dental.me Editorial Team · Updated July 2026

If you have lost an upper back tooth and want to replace it with an implant, your dentist may tell you there is not enough bone to hold one. That is a common finding in the upper jaw, and the usual fix is a procedure called a sinus lift. It sounds dramatic, but it is a routine, predictable bone-grafting step that makes upper-back implants possible when the bone is too thin on its own. This guide explains what a sinus lift is, why it is needed, the two main approaches, what the procedure and recovery feel like, and how it fits into your overall implant timeline.

What Is a Sinus Lift?

A sinus lift, also called a sinus augmentation, is a bone-grafting procedure that adds bone to the upper jaw in the area of the back molars and premolars. Directly above those upper back teeth sit the maxillary sinuses, a pair of air-filled spaces in your cheekbones. The floor of the sinus is separated from your mouth by a thin layer of bone and a delicate lining called the sinus membrane.

During a sinus lift, the surgeon gently lifts that membrane upward and packs bone graft material into the space created underneath it. As the graft heals and turns into your own solid bone, the floor of the sinus is effectively raised and the jaw gains height. That added height is what gives a dental implant enough bone to anchor into securely. A sinus lift only builds bone upward in the sinus region; it is one of several types of grafting used in implant dentistry, and it is closely related to a standard dental bone graft.

Why Would You Need a Sinus Lift?

The upper back jaw is the most common place in the mouth to run short on bone, for a few reasons that often stack up together:

• Naturally low sinuses. In many people the maxillary sinuses sit low and the bone below them is thin to begin with.
• Bone shrinks after tooth loss. Once a tooth is gone, the jawbone that held it is no longer stimulated and gradually resorbs. The longer a tooth has been missing, the more height is lost.
• Gum disease and infections. Advanced gum disease or a long-standing dental infection can destroy bone around the back teeth.
• Sinus expansion. As upper bone thins, the sinus can slowly enlarge downward into the space, leaving even less room.

A dental implant needs a certain amount of solid bone height to hold. When the bone between the top of the ridge and the floor of the sinus is too short, placing an implant risks pushing it into the sinus. A sinus lift restores the height so a dental implant can be placed safely. If you are weighing your options, our guide on who makes a good dental implant candidate covers the bone and health factors your surgeon evaluates.

Types of Sinus Lifts: Lateral vs. Crestal

There are two main techniques, and the amount of bone you need determines which one your surgeon chooses.

Lateral window (open) approach

This is the traditional method for larger lifts. The surgeon makes a small window in the bone on the side of the jaw, above the gum line near the cheek, to access the sinus. Working through that window, they lift the membrane and place a generous amount of graft material. The lateral approach is used when a lot of new height is needed, and it is often done as a separate procedure several months before the implants go in.

Crestal (internal or osteotome) approach

This is a smaller, less invasive lift performed through the top of the ridge, from the same spot where the implant will sit. The surgeon carefully raises the sinus floor a few millimeters and adds a small amount of graft. Because the lift is modest, the crestal approach can sometimes be done at the same appointment as implant placement, saving a separate surgery and shortening the overall timeline. It is best suited to cases that need only a little extra height.

What Happens During the Procedure

A sinus lift is typically an outpatient procedure done under local anesthesia, often with sedation to keep you comfortable and relaxed. The general steps are:

• The surgeon numbs the area and, for a lateral lift, opens a small flap of gum to reach the bone.
• They create access to the sinus, either through a side window or through the ridge.
• The sinus membrane is gently lifted away from the bone to create a protected space.
• Bone graft material is packed into that space. The graft may be your own bone, processed donor bone, animal-derived bone, or a synthetic substitute; all serve as a scaffold your body replaces with real bone over time.
• A collagen membrane is sometimes placed to protect the graft, and the gum is closed with stitches.

The appointment usually takes about one to two hours depending on the approach. This is one stage in the larger sequence covered in our overview of dental implant procedure steps.

Healing, Recovery, and Aftercare

The graft is not instantly solid bone. It needs time to mature and fuse with your existing jaw, and this is the part of the process that adds the most time. Depending on how much bone was placed and your own healing, the graft typically matures over roughly four to nine months before implants are placed, or before they finish integrating if placed at the same time.

The first days of recovery are usually milder than people expect. You can anticipate some swelling and bruising around the cheek, minor bleeding or oozing, and mild discomfort managed with prescribed or over-the-counter pain medicine. Your surgeon will likely prescribe antibiotics and may recommend a saline nasal spray. Key aftercare steps protect the fragile membrane and the new graft:

• Do not blow your nose forcefully, and sneeze with your mouth open to avoid pressure on the sinus.
• Avoid drinking through straws for a couple of weeks.
• Skip heavy exercise and heavy lifting for the first several days.
• Stick to soft foods and chew away from the surgical site.
• Take all prescribed medication and keep your follow-up appointments.

Following these instructions closely lowers the chance of complications and helps the graft settle undisturbed.

Risks, Cost, and How It Fits Your Timeline

In experienced hands a sinus lift is a safe, well-established procedure, but like any surgery it carries some risk. The most common is a small tear in the sinus membrane, which the surgeon can usually repair during the same appointment or allow to heal before continuing. Other possibilities include infection, temporary sinus congestion or irritation, and, less often, the graft failing to integrate, which may require redoing the graft.

Cost varies widely with the type of lift, the amount and source of graft material, imaging, and sedation. A sinus lift often ranges from a few hundred dollars for a small crestal lift to a couple of thousand dollars or more for a full lateral procedure, and that is on top of the implants themselves. Insurance coverage is inconsistent, so ask for a written estimate and check your benefits. Our breakdown of how much dental implants cost can help you plan the full budget.

Because the graft has to heal before implants can fully anchor, a sinus lift can add several months to your implant journey. When the lift is done separately, you may wait months before the implant is placed; when a small lift is combined with implant placement, the added time overlaps with normal implant healing.

The Takeaway: When to See a Specialist

A sinus lift is a common, predictable step that makes upper-back implants possible when the bone is too thin to hold one on its own. It is usually performed by an oral surgeon or a periodontist, who will use a 3D scan to measure your bone and recommend the right approach. If you have been told you lack bone for an upper implant, or you have had upper back teeth missing for a long time, ask a qualified implant specialist whether a sinus lift is part of your plan. With the right provider, it is a routine building block on the path to a stable, natural-feeling replacement tooth.

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