Yes, you can almost always get a dental implant after a previous sinus lift. Most grafts are ready for implant placement 4 to 9 months after surgery, and research shows implants in grafted sinus bone have survival rates comparable to natural bone. If more than a year has passed, we'll take a new 3D scan to confirm the graft is still viable.

At Line Dental Aloha, we see this situation often. A patient had a sinus lift done at an oral surgeon's office in Beaverton or Hillsboro, life got busy, and now, one or two years later, they want to finish the job. Good news: the window is wider than most people think.

What is a sinus lift and why would you need one before an upper implant?

The maxillary sinus is an air-filled space sitting right above your upper back teeth. When you lose an upper molar, the bone underneath that sinus starts to resorb, and the sinus floor can drop lower into the space where a tooth root used to be. That leaves too little bone to anchor an implant.

A sinus lift (also called sinus augmentation) solves this. The surgeon gently lifts the sinus membrane and places bone graft material underneath, creating new vertical height for a future implant. Two main approaches exist. The lateral window technique opens a small access on the side of the upper jaw for larger grafts. The crestal (osteotome) approach lifts the sinus from above through the implant site itself, used when less bone needs to be added.

Either way, the result is the same. More bone. More foundation. A real home for the implant.

How long after a sinus lift can you place the implant?

Timing depends on how much native bone you had to begin with. If 4 to 5 mm of your original bone was still present, the implant can sometimes be placed at the same time as the sinus lift. This is called simultaneous placement, and it's confirmed by consensus literature from the Academy of Osseointegration.

If less native bone was present, the surgeon almost always chooses a staged approach. According to AAOMS clinical guidance, that means waiting 4 to 9 months for the graft to mature before placing the implant. The exact window depends on the graft material used and the size of the defect.

So what if you waited longer? A lot longer? We hear this all the time from Intel and Nike employees who had a sinus lift years ago and simply never got back to it. In most cases, the grafted bone is still perfectly usable. A cone-beam CT scan (CBCT) tells us the whole story, measuring both bone height and density before we plan anything.

Does grafted sinus bone hold an implant as well as natural bone?

This is the question that keeps patients up at night. The answer is reassuring. Peer-reviewed systematic reviews published in the International Journal of Oral & Maxillofacial Implants report implant survival rates between 90% and 95% over five or more years in grafted sinus bone. That's statistically comparable to implants placed in native bone.

The type of graft material rarely changes the outcome much. Autogenous (your own bone), allograft (donor), xenograft (bovine), and alloplast (synthetic) all show high success rates when the surgery is done well and healing goes smoothly.

Once the implant is placed, osseointegration (the bone fusing to the titanium) still takes 3 to 6 months, per ADA patient education guidance. During that time, we don't rush the crown. We let biology do its work.

Here's what actually threatens success more than the graft itself: smoking, uncontrolled diabetes, and heavy nighttime grinding. Cochrane Reviews have shown that smokers face roughly double the implant failure risk compared to non-smokers. That matters more than whether your bone is grafted or native.

The graft isn't the risk factor most patients think it is. Lifestyle habits almost always matter more.

What should you expect at your consultation in Aloha?

If you had the sinus lift elsewhere, bring whatever records you have. Previous CBCT scans. Surgical notes. The name of the graft material if you remember it. We work with records from oral surgeons across Washington County regularly, and most offices will email the files directly if you give them permission.

At your visit on SW Alexander St, we'll take fresh 3D imaging to measure your current bone height, width, and density. We'll talk about which implant brand fits best, when the crown goes on, and how your PPO insurance handles a situation where the lift was billed separately years earlier.

If the graft resorbed significantly, which happens occasionally, we'll walk through whether a second, smaller lift makes sense or whether a shorter implant can work with the bone you have. Options exist. Every single time.

When to call us versus wait

Call us if more than 12 months have passed since your sinus lift. Bone keeps remodeling, and the longer the site sits empty, the more we want fresh imaging before planning anything.

Call sooner if you notice pressure, drainage, chronic sinus pain, or a bad taste near the graft site. Those symptoms are uncommon but worth checking.

If you feel completely normal and the site looks healthy, there's no urgency to rush in tomorrow. But don't let it drift another two years either. A recent patient from the Aloha-Reedville area had put off her upper molar implant since 2021 because her commute between the Hillsboro tech corridor and her kids' schools kept eating her calendar. Her graft was still in great shape. One scan, one plan, done.

Frequently Asked Questions

Can a sinus lift fail years after it was done?

True late failure is uncommon, but partial resorption of the graft can happen, especially if the site stays unloaded (no implant placed) for a long time. A sinus infection or trauma in the area can also compromise the graft. A quick CBCT scan tells us exactly how much usable bone remains.

Will my dental insurance cover the implant if the sinus lift was done separately?

Usually yes, because the implant and crown are billed as their own procedures. Insurance coverage varies by plan, especially for the implant portion. Our team at Line Dental verifies your PPO benefits before treatment begins and lays out any out-of-pocket costs in writing.

Is placing an implant in grafted bone more painful than in natural bone?

No. Patients consistently report that the implant placement itself is less eventful than the original sinus lift. You'll feel some pressure during the procedure and mild soreness for a few days afterward. Most people manage with over-the-counter pain relievers.

Can I fly or travel after sinus lift surgery?

Most oral surgeons recommend waiting at least two to three weeks before flying after a sinus lift because cabin pressure changes can stress the graft site. Once you're healed and ready for the implant placement itself, flying soon after is generally fine. Ask us at your consultation.

What if I need a sinus lift on both sides. Can they be done at once?

Yes, bilateral sinus lifts can be done in a single surgical session when the patient and anatomy support it. Recovery is a bit more involved because you can't favor one side for chewing. Many patients choose to stage them one side at a time for comfort.

Ready to finish what you started?

If you had a sinus lift months or years ago and you're ready to talk about the implant, we'd love to see you. Call Line Dental Aloha at (503) 259-8641 or stop by 18425 SW Alexander St. We serve patients across Aloha, Beaverton, Hillsboro, and the greater Washington County area, with easy access from Highway 217 and TV Highway.