Dental implants in the upper back jaw require careful planning because the sinus sits close to this area. When bone level or sinus position limits the space available for an implant, a sinus lift may be considered as part of treatment planning. A sinus lift is only needed when the bone under the sinus, where the upper back teeth sit, is too short for an implant. Front upper implants almost never need one. At Adara Surgical Institute in Issaquah, WA, the answer comes from a CBCT scan (an in-office 3D X-ray).
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When Is a Sinus Lift Needed?
A sinus lift may be needed when the upper jaw does not have enough bone height for a dental implant. A sinus lift is a specialized type of bone graft used when the upper back jaw needs more bone height before dental implant placement.
This is most common in the upper premolar and molar areas because the maxillary sinuses sit above the roots of the upper back teeth. If the sinus is too close to the planned implant site, placing an implant without grafting may not be safe or predictable.
A sinus lift may be recommended if imaging shows:
- Limited bone height in the upper back jaw
- A sinus floor that sits close to the missing tooth area
- Bone loss after long-term tooth loss
- Bone changes after infection or gum disease
- A need for grafting before implant placement
Not every upper dental implant case needs a sinus lift. The need depends on your anatomy, the amount of remaining bone, and the position of the planned implant.
Why Bone Loss Happens in the Upper Back Jaw
Bone in the jaw changes after a tooth is removed. When a tooth is no longer present, the bone that once supported the root can slowly shrink in height and width.
This can be more noticeable in the upper back jaw because the sinus naturally sits above this area. Over time, the sinus may expand downward while the jawbone becomes thinner. This can leave less room for a dental implant.
Bone loss may also be affected by:
- How long the tooth has been missing
- The size and shape of the sinus
- Previous infection around the tooth
- Gum disease or bone loss around nearby teeth
- Trauma or previous surgery in the area
Detailed imaging is important before implant treatment. A regular dental exam may show that a tooth is missing, but advanced imaging helps show how much bone is available beneath the sinus.
Sinus Lift Procedure
The procedure begins by numbing the treatment area with local anesthesia. Sedation is also available for patients who would benefit from additional comfort during treatment. A small incision is made in the gum tissue to access the underlying bone, and a small opening is created near the sinus.
The thin membrane lining the sinus is carefully elevated, creating space beneath it for bone grafting material. Once the graft has been placed, the incision is closed with sutures to allow the area to heal.
Over the following months, the graft gradually integrates with the existing jawbone, creating a stable foundation for dental implant placement.
There are two techniques, and we do both here. A lateral window sinus lift goes in through the side wall of the upper jaw. This is the approach when only a few millimeters of bone remain, because it lets us add the most height. A crestal sinus lift goes in through the implant hole itself. When there is more bone to work with, the sinus floor is nudged upward through the implant site and graft is added.
The graft material depends on the case. It can be your own bone, processed donor bone, bone from a cow source, a synthetic bone substitute, or a mix. We always add PRF (a concentrate of your own blood clot) to help the graft heal.
How Long After a Sinus Lift Can You Get an Implant?
The timing of implant placement depends on your individual treatment plan. In many cases, the implant can be placed during the same procedure as the sinus lift. This works even with as little as 2 mm of bone, using bone-densifying burs (Versah) or densifying osteotomes (instruments that compact the bone you have instead of drilling it away). The CBCT decides.
When additional healing is needed, implant placement is typically scheduled several months later to allow the bone graft to integrate with the jaw. A small lift heals in about 3 months. A large graft, where a lot of height was added, takes 6 to 12 months before the bone is solid enough to hold an implant.
Before moving forward, follow-up imaging may be performed to evaluate the grafted area and confirm there is adequate bone to support the implant.
Risks, and Who Should Wait
A sinus lift can fail. The most common problem is a tear in the sinus lining during surgery. Other risks are a sinus infection after surgery, infection or failure of the graft, a small opening between the mouth and the sinus that does not close on its own, and bleeding. Most sinus lifts heal without any of these.
Some patients should wait. An active sinus infection or chronic sinusitis has to be treated first. Smokers have a higher graft failure rate. The rule is the same as for any graft, stopped ideally a month before surgery and for 3 months or more after. Uncontrolled diabetes, past radiation to the jaws, and certain bone medications (bisphosphonates and similar drugs) each need a conversation about timing and risk before a lift is planned.
What to Avoid After a Sinus Lift, and When to Call Us
The lifted lining is thin, and pressure is what tears it. For 3 to 6 weeks after a sinus lift, follow these rules without exception.
- Do not blow your nose. Dab it instead.
- Sneeze with your mouth open so the pressure does not go up into the sinus.
- No straws.
- No heavy lifting or hard exercise.
- No flying and no diving.
- No smoking or vaping, for 3 months or more.
If your surgery was done elsewhere, call the office that did it. If you are our patient, call us at (425) 428-5888 for any of the following:
- Pain or swelling that is getting worse after day 3 instead of better.
- Fever over 101 F.
- Thick or foul-smelling drainage from the nose or the surgical site.
- Gritty particles (graft material) coming out of your nose.
- Air or liquid passing between your mouth and your nose.
Alternatives to a Sinus Lift
A lift is not the only way to put a tooth in the upper back jaw. Depending on your scan, a shorter implant may fit in the bone that is already there. A tilted implant can angle away from the sinus and anchor in solid bone toward the front of the jaw.
For severe bone loss we also place pterygoid implants (anchored in dense bone behind the upper jaw) and subperiosteal implants (a custom frame that sits on top of the bone). A bridge on the neighboring teeth is the non-implant option for a single missing tooth.
Dental Implant Planning at Adara Surgical Institute
At Adara Surgical Institute, implant treatment begins with a careful evaluation of your jawbone, sinus position, bite, and long-term restoration goals. Dr. Hardeep Dhaliwal uses detailed imaging to determine whether a sinus lift, bone graft, or other preparatory procedure is needed before implant placement.
If a sinus lift is recommended, our team will explain why it is needed, how it fits into your implant timeline, and what to expect during healing. When bone support is limited, planning this step carefully can help create a stronger foundation for treatment.
Oral Surgeon in Issaquah, WA
To book a consultation at our oral surgery office in Issaquah, WA, call (425) 428-5888 or visit us at 6505 226th Pl SE STE #100 Issaquah, WA.
FAQs
Is a sinus lift painful?
A sinus lift is performed with anesthesia, so you should not feel pain during the procedure. Some soreness, swelling, pressure, or congestion can happen afterward. Postoperative instructions will explain how to manage discomfort and protect the healing area.
How do I know if I need a sinus lift?
You may need a sinus lift if imaging shows there is not enough bone in the upper back jaw for a dental implant. This cannot be determined by symptoms alone. An exam and imaging are needed to evaluate the bone and sinus position.
Can a sinus lift and dental implant be done at the same time?
If enough bone is available to stabilize the implant, the implant may be placed during the same procedure as the sinus lift. If bone support is too limited, the sinus lift may need to heal first before implant placement.
What should I avoid after a sinus lift?
For three to six weeks, do not blow your nose, use straws, lift heavily, fly, or dive. If you need to sneeze, keep your mouth open to reduce sinus pressure. Ideally, smoking should stop about one month before grafting and for at least three months afterward.
How much does a sinus lift cost?
Cost depends on the plan, mainly on the size of the lift and on whether the implant goes in the
same day or at a second surgery. We go over the exact numbers at your consult once the
CBCT tells us what is needed.
