Sinus Problems After Dental Implants or a Sinus Lift: What Austin-Area Patients Should Know

Sinus problems after dental implants worry people for a simple reason: the roots of the upper back teeth sit just below the maxillary sinus, so a stuffy nose or a sore cheek after upper implant surgery can feel like something has gone wrong in a place you cannot see. Usually it has not. Some sinus pressure and congestion are a normal part of healing after upper implants or a sinus lift. Sometimes, though, the symptoms point to a torn sinus membrane, an infected graft, an opening between the mouth and the sinus, or an implant that has moved. This article explains how to tell the difference, who treats which problem, and what the options look like if something does need attention. It is written for patients near our Hutto office, including Austin, Round Rock, Pflugerville, Georgetown and Cedar Park, whether your implants were placed with us or somewhere else.

The short answer

Mild pressure, congestion and a little blood-tinged drainage on the treated side can be part of normal healing after upper implants or a sinus lift. Symptoms that get worse instead of better, a bad smell or taste, thick drainage from one side of the nose, fever, liquid or air passing between your mouth and nose, or an implant that feels loose are reasons to call your surgeon promptly.

Sinus complications after implant treatment are uncommon, and most can be treated, sometimes by an implant surgeon and an ear, nose and throat (ENT) doctor working side by side. What tends to make things harder is waiting: a problem checked early usually has more options than one treated with round after round of antibiotics for months.

Why upper implants and your sinus are neighbors

The maxillary sinus is an air space in the cheekbone that sits right above the upper back teeth. After those teeth are lost, the sinus often expands downward while the bone below it shrinks, which leaves little room for an implant.

The American Association of Oral and Maxillofacial Surgeons (AAOMS) describes this process: when teeth deep in the upper jaw are lost, the bone thins and the sinus can expand downward, leaving too little bone height for an implant. A sinus lift, also called sinus augmentation, solves that by gently raising the thin lining of the sinus, called the Schneiderian membrane, and placing bone graft material underneath it. Surgeons reach the sinus floor either through a small window in the side of the jaw (the lateral window approach) or from below through the implant site (the osteotome or crestal approach). Implants are placed at the same time or after the graft has healed for several months.

That closeness works both ways: an upper implant or graft can affect the sinus, and the sinus can affect the implant. This article is about what happens after treatment, not about choosing a sinus lift in the first place.

What is usually normal in the first days

Swelling, bruising, mild pressure in the cheek, a stuffy feeling on the treated side and small amounts of blood-tinged drainage from the nose are common early after sinus-area surgery. What matters is the direction: normal symptoms ease a little more each day.

Your surgeon's written instructions are the reference for your own recovery, and they vary from office to office. Many surgeons give a set of sinus precautions after a sinus lift or upper extraction, such as not blowing your nose, sneezing with your mouth open, avoiding straws and heavy exertion for a while, and using prescribed medicines or saline sprays exactly as directed. The reason is pressure. Blowing your nose or sneezing with your mouth closed pushes air against the healing area, and a review on mouth-to-sinus openings lists nose blowing, closed-mouth sneezing and vigorous sports among the things to avoid while those openings heal.

Blood-stained mucus looks alarming but is often expected in small amounts. The harder part is that ordinary colds and allergies do not pause for surgery.

That second point matters in Central Texas. The Texas A&M Forest Service explains that mountain cedar (Ashe juniper) trees typically start releasing pollen in mid-December, peak in mid-January and taper off toward early March, and that cedar fever brings blocked nasal passages, sneezing and itchy, watery eyes. If you live in Austin, Georgetown or Cedar Park and your upper implant or sinus lift falls in that window, ask your surgeon before surgery which allergy medicines are fine to take and whether timing matters for your case. Sneezing fits and congestion are not dangerous to a graft by themselves, but they make it harder to follow sinus precautions and harder to tell allergy symptoms from early infection.

Warning signs that need a call

Call your surgeon promptly if your symptoms get worse after the first few days instead of better, or if you notice any of the signs below. Some of them are easy to mistake for a cold.

• Pain, pressure or swelling that increases after it had started to settle
• Thick, yellow-green or foul-smelling drainage, especially from one side of the nose
• A bad smell or taste you cannot explain
• Fever or feeling unwell
• Liquid coming out of your nose when you drink, or air whistling between your mouth and nose
• Graft particles, grit or a salty taste in your mouth or nose
• An upper implant or temporary tooth that feels loose or sore when you bite
• Congestion on one side that has not cleared weeks after surgery

Smell and side are two clues worth knowing. An international consensus of ENT doctors and dental specialists, published in 2021, found that sinusitis caused by a dental source is usually one-sided and that a foul smell is more specific for a dental cause than other sinus symptoms, though not every patient notices it. If one side of your face is congested and the other is fine after upper dental work, mention the dental work to whoever examines you.

Swelling that spreads toward the eye, changes in vision, a severe headache, a high fever or trouble breathing are not wait-and-see symptoms. Seek emergency care right away.

The complications behind those symptoms

Most sinus complications after implant treatment fall into five groups: a torn sinus membrane, a sinus or graft infection, an opening between the mouth and the sinus, an implant that reaches into or moves into the sinus, and sinus disease that was already there. Each one is handled differently.

A torn sinus membrane during surgery

The lining of the sinus is thin, and tearing it is the most common problem during a sinus lift. A 2022 review in Periodontology 2000 put the rate at around 20 to 25 percent of open (lateral window) sinus lifts, and a 2016 meta-analysis of 12 studies found a weighted rate of 23.5 percent, with thin membranes and bony walls inside the sinus (septa) raising the risk.

That sounds high, which is why surgeons plan for it. Small tears are usually repaired during the same surgery, and the 2016 meta-analysis found no significant difference in implant survival between perforated and intact sinuses, concluding that a perforation that is handled appropriately tends to show comparable implant survival. If you are told a tear happened, it is reasonable to ask how big it was, how it was repaired and whether your follow-up schedule changes. It is not, by itself, a sign that the treatment has failed.

A sinus infection or an infected graft

Infection is less common than a tear but more serious. Bacteria can reach the graft from the mouth, from the sinus itself or through a tear, and an infected graft does not turn into bone. Typical signs are swelling and pain that build after the first days, foul drainage or taste, and sometimes a small draining spot in the gum. Some people develop longer-running sinusitis weeks or months later.

The good news is that these infections usually respond to treatment. A 2022 systematic review and meta-analysis of eight studies (181 patients) on sinusitis that followed implant treatment found that endoscopic sinus surgery, often combined with treatment through the mouth, was the most common approach, with a pooled success rate of 94.7 percent. When an infected graft does have to be removed, the sinus needs time to heal before anyone talks about grafting again, which we cover in our separate article on options after a failed bone graft.

An opening between your mouth and your sinus

An oroantral communication is an opening between the mouth and the maxillary sinus. It can happen when an upper back tooth with long roots is removed, when an implant is taken out, or during sinus-area surgery, and it is relevant to full-arch patients because many of them have several upper teeth removed on the same day. The classic sign is liquid coming out of the nose when you drink. Some people notice air passing through or a change in their voice.

A 2019 review on decision-making for these openings explains that a small opening under about 2 mm, with no infection, may close on its own once a blood clot forms, while openings larger than about 5 mm or ones that have been there longer than three weeks rarely heal by themselves and usually need surgical closure. The same review notes that an opening should be closed within 24 to 48 hours, because an opening that stays open raises the risk of sinusitis. If you notice these signs after an upper extraction, call the office that day rather than waiting for your next appointment.

An implant that reaches into the sinus, or moves into it

These are two very different situations that people often confuse.

The first is an implant whose tip sits slightly inside the sinus on an X-ray. A multidisciplinary panel of implant surgeons, ENT doctors and radiologists reached consensus in 2022 that implants which are integrated in bone but protrude into the sinus on X-rays need the same monitoring and maintenance as implants fully covered by bone. If sinusitis symptoms appear, the implant provider and an ENT should work together, and removing the implant should be considered only after medicine and sinus surgery have not solved the problem.

The second is an implant that has actually been displaced into the sinus cavity. This is rare, but it happens. A 2023 systematic review of 321 patients with displaced implants found that the upper first molar site was the most common location (23.7 percent), that most displacements happened in the first six months after placement (62.6 percent), and that more than half of patients developed symptoms, most often sinusitis and/or an opening between the mouth and the sinus. The authors recommend careful imaging before placement to prevent it and early removal of a displaced implant to prevent infection. A displaced implant is not something to watch and wait on.

Sinus problems that were there before the implant

Some sinus trouble after implant surgery is old trouble. Chronic sinusitis, polyps, a thickened sinus lining or a blocked sinus drainage pathway can all exist before anyone places an implant, and surgery can make them flare. The 2022 Periodontology 2000 review stresses that a detailed medical history and a thorough clinical and radiographic examination are essential before any graft involving the sinus. This is one reason a 3D cone beam CT (CBCT) scan matters before upper implant planning: it shows the sinus as well as the bone. If you have a long history of sinus infections, say so at your consultation, even if they seem unrelated to your teeth.

Who treats it: your implant surgeon, an ENT, or both

Sinus problems after implant treatment often need two kinds of expertise. The dental team decides whether the implant, graft or an opening is the source, and an ENT confirms and treats the sinus itself. Neither one alone always has the full picture.

The 2021 consensus on diagnosing sinusitis from a dental source spells this out. ENT doctors confirm sinusitis mainly by looking inside the nose with an endoscope, and dental providers confirm the dental cause with a clinical exam and dental imaging. The panel agreed that anyone with this kind of sinusitis and a prior dental implant should be seen by a dental specialist to decide whether the implant needs to come out, and noted that a stable implant without peri-implantitis does not always need removal. Even so, if sinusitis continues after appropriate antibiotics and sinus surgery, the implant may still be the source.

The practical lesson is to make sure each doctor knows about the other. If you see urgent care or an ENT for sinus symptoms after upper implant work, mention the implants and any sinus lift and bring your records. If your implant team suspects a sinus problem, ask whether they want an ENT involved.

What treatment can look like

Treatment depends on the cause. It can range from medicine and close follow-up, to closing an opening, cleaning out an infected graft, endoscopic sinus surgery, or removing an implant and rebuilding later. Many problems are resolved without losing the implant, but not all of them.

In broad terms, the options include:

Medicine and monitoring. Early or mild infections may be treated with prescribed antibiotics, decongestants or rinses, with a recheck to confirm things are improving. Antibiotics alone are not the right answer if there is a mechanical cause, such as a displaced implant or an open communication.

Closing an opening. A persistent mouth-to-sinus opening is usually closed surgically with a flap of nearby tissue, ideally before the sinus becomes infected.

Cleaning out an infected graft. When a sinus graft is infected, the infected material is often removed and the area rinsed so the sinus can heal. Implants are sometimes kept and sometimes removed, depending on how they are doing.

Endoscopic sinus surgery. An ENT can open the natural drainage pathway of the sinus and clear infection from inside the nose. In the 2022 meta-analysis above, this was the most common treatment and had a high success rate.

Removing an implant and planning again. A displaced implant, or a failing one that keeps the sinus infected, may need to come out. After the sinus has healed and imaging confirms it, the team can talk about what comes next: another graft, implants in different positions, a removable option, or, in selected patients with severe upper bone loss, zygomatic or pterygoid implants. At Regional Implant Centers, zygomatic and pterygoid implants are performed by Dr. Dan Holtzclaw and Dr. Enrique Tabarini, and they are not right for everyone. Not every upper jaw can be rebuilt for fixed teeth, and an honest plan should say so.

If your implant or sinus lift was done somewhere else

If symptoms are new and getting worse, call the surgeon who did the procedure first, because they know exactly what was done. If a sinus problem keeps coming back or nobody has explained the cause, a second evaluation with 3D imaging is reasonable.

A second opinion is most useful when you bring records, because the details of the original surgery shape the options. Helpful items include the surgery notes, any CBCT scans or X-rays before and after treatment, the implant brand and size if you have them, notes from any ENT or urgent care visits, and a list of the antibiotics you have taken and when. Our post on how to avoid failed implant dentistry and costly mistakes explains what to look for in any treatment plan.

How we evaluate sinus problems at our Hutto office

At our Hutto office, a sinus concern starts with your history, your records and a 3D CBCT scan that shows the sinus, the bone and the implants together. The office does bone grafting and sinus work and has a dentist anesthesiologist on site.

Our CBCT imaging lets the team study bone structure, sinuses, nerves and possible implant sites in three dimensions, which is how a protruding implant tip, a thickened sinus lining or a gap in the sinus floor shows up. Our post on advanced planning technology before oral surgery explains how the scan feeds the surgical plan. Planning runs through our RISE Protocol, in which a prosthodontist plans the final bite and teeth before surgery, an oral surgeon handles the surgical foundation, a dedicated anesthesia professional supports comfort and monitoring, and dental laboratory technicians connect the plan to the teeth you will wear. Our bone and tissue reconstruction and oral surgery pages describe the grafting and surgical side, and our post on why bone grafting may be needed before dental implants explains when the upper jaw needs rebuilding. If sedation is part of a procedure, sedation and comfort during dental implant surgery explains how the options are chosen. Our in-house lab is at our Katy office.

Prevention matters as much as treatment. Before upper implants or a sinus lift, the scan shows the sinus as well as the bone, and the prosthodontist plans the final teeth before surgery, so the surgery is built around where the teeth need to be. Tell us about any history of sinus infections at your consultation. After treatment, care continues through a required Maintenance Package, which is not a traditional warranty. Enrollment must begin within 30 days of final prosthesis delivery, and maintenance visits must be completed at Regional Implant Centers unless your written agreement says otherwise. Our implant warranty page explains the terms. No one can guarantee that implants or prosthetics will never need adjustment, repair or replacement.

Our Hutto office is at 201 E Wilco Hwy, Suite 203, and serves patients from Hutto, Round Rock, Pflugerville, Georgetown and across the Austin area. The location page lists office hours as Monday through Thursday, 8 to 5, with Fridays for surgeries only.

How insurance and financing fit in

Medical insurance may help with some surgical parts of a plan, but at our office it does not pay for implants, temporary teeth or final teeth, and coverage is never guaranteed.

At Regional Implant Centers, we bill medical insurance only for surgical professional services, such as extractions, bone grafting and alveoloplasty (smoothing and reshaping the bone). Implants, temporary teeth and the final prosthesis are billed to the patient separately. Only PPO plans work for out-of-network oral surgery benefits, and a PPO medical plan with oral surgery coverage may be worth checking, but please verify your benefits with our team before treatment. We cannot bill Federal Employee Program (FEP) Blue Cross Blue Shield plans. Care you receive from an ENT or another physician is billed by that provider. Our Insurance Advantage team reviews dental and medical benefits, and our insurance disclaimer explains that a benefit estimate or preauthorization is not a guarantee of payment.

Financing is available through independent third-party companies listed on our financing page, including Cherry, Proceed, CareCredit and Sunbit. Approval, rates and terms are set by each lender, not by Regional Implant Centers.

Frequently asked questions

Can a dental implant cause a sinus infection?

It can, although it is uncommon. An upper implant, a sinus graft, an opening between the mouth and the sinus, or an implant that has moved into the sinus can all lead to sinusitis. Sinusitis from a dental source is usually one-sided, and a foul smell is a common clue. These infections usually respond to treatment, which may involve both the implant team and an ENT.

Is sinus pressure normal after a sinus lift?

Some pressure, congestion and a small amount of blood-tinged drainage are common in the first days after a sinus lift. They should ease steadily. Pressure that builds after it had started to settle, thick or foul drainage, fever, or liquid coming out of your nose when you drink are reasons to call your surgeon promptly.

What happens if a dental implant goes into the sinus?

An implant tip that sits slightly inside the sinus on an X-ray but is stable in bone usually only needs normal monitoring. An implant that has actually been displaced into the sinus cavity is different: a 2023 systematic review recommends removing it early to prevent infection, and the area is then allowed to heal before new implant planning. Both situations should be checked with 3D imaging.

Should I see my implant surgeon or an ENT?

Often both. The implant team decides whether an implant, graft or opening is causing the problem, and an ENT confirms and treats the sinus itself. If symptoms are new after surgery, call the surgeon who treated you first. If you see an ENT or urgent care, tell them about your implants and any sinus lift.

Will insurance cover treatment for a sinus complication after implants?

It depends on your plan and the treatment. At our office, medical insurance is billed only for surgical professional services such as extractions and bone grafting, while implants and teeth are billed to the patient. A PPO medical plan with oral surgery coverage may be worth checking, but please verify your benefits, and note that we cannot bill FEP Blue Cross Blue Shield plans.

Talk with our Hutto team about sinus symptoms after implant treatment

If you live in Hutto, Round Rock, Pflugerville, Georgetown or anywhere in the Austin area and you are dealing with sinus symptoms after upper implants or a sinus lift, or you are planning upper implants and want the sinus looked at first, start with an evaluation. You will have a clinical exam, 3D imaging when indicated, a review of your records and a written plan with estimated insurance benefits, financing options and your expected out-of-pocket investment before anything begins. Qualified patients receive a complimentary consultation, CBCT scan and insurance benefits evaluation. Schedule a consultation by phone or in person at our Hutto office, or call (832) 632-7037. Houston-area patients can book with our Katy office. If your symptoms are severe or spreading toward the eye, seek emergency care first.

Sources & Resources

• American Association of Oral and Maxillofacial Surgeons. Sinus Augmentation: Preparing Sinuses for Dental Implants
• Molina A, Sanz-Sanchez I, Sanz-Martin I, et al. Complications in sinus lifting procedures: Classification and management. Periodontology 2000, 2022.
• Al-Dajani M. Incidence, Risk Factors, and Complications of Schneiderian Membrane Perforation in Sinus Lift Surgery: A Meta-Analysis. Implant Dentistry, 2016.
• Craig JR, Poetker DM, Aksoy U, et al. Diagnosing odontogenic sinusitis: An international multidisciplinary consensus statement. International Forum of Allergy and Rhinology, 2021.
• Allevi F, Fadda GL, Rosso C, et al. Treatment of Sinusitis Following Dental Implantation: A Systematic Review and Meta-Analysis. American Journal of Rhinology and Allergy, 2022.
• Parvini P, Obreja K, Begic A, et al. Decision-making in closure of oroantral communication and fistula. International Journal of Implant Dentistry, 2019.
• Testori T, Clauser T, Saibene AM, et al. Radiographic protrusion of dental implants in the maxillary sinus and nasal fossae: A multidisciplinary consensus utilising the modified Delphi method. International Journal of Oral Implantology, 2022.
• Seigneur M, Hascoet E, Chaux AG, et al. Characteristics and management of dental implants displaced into the maxillary sinus: a systematic review. International Journal of Oral and Maxillofacial Surgery, 2023.
• Texas A&M Forest Service. Cedar fever season in Texas

This article is general patient education and is not a diagnosis or treatment plan. If you have sinus symptoms after implant treatment, contact the surgeon who treated you, and seek emergency care for severe or spreading symptoms. Treatment options and timelines depend on an individual clinical evaluation and imaging. Insurance coverage is never guaranteed, and financing is provided by independent third-party companies. Regional Implant Centers has offices in Katy and Hutto, Texas. Outcomes vary, and implant treatment is not appropriate for every patient.