A Real Patient Case Study Explained — Including Why We Chose a Zirconia Implant
By Dr. Choi, Board-Certified Periodontist | Procedure Education Series
If your dentist or oral surgeon has mentioned a "sinus lift" along with your dental implant, you may be wondering: Do I really need this? What happens during it? And is it safe?
In this post, I'm going to walk you through a real case from my office — step by step — so you can better understand what a sinus lift is, why we sometimes need to do it during implant surgery, and how we chose the right implant for this patient. This is the same case I talked about in a recent video, but here you'll get the full explanation in writing.
Quick note: I'm Dr. Choi, a board-certified periodontist. I've been placing implants and doing sinus lifts since 2011. Everything here is based on real clinical experience and a real patient case. As always, your own treatment plan should be discussed with your doctor.
First: What Is a Sinus Lift and Why Does It Matter for Implants?
Your sinuses are hollow spaces filled with air inside your skull. One of them, called the maxillary sinus, sits right above your upper back teeth. When you lose a tooth in that area, the jawbone below it can shrink over time. That can leave very little bone between your mouth and the sinus space above it.
This is important when placing a dental implant. Think of an implant like a fence post. A fence post needs to go deep enough into the ground to stay firm and stable. A dental implant is the same way — it needs enough strong bone around it to hold it in place.
A sinus augmentation (also called a sinus lift) is a procedure where we add bone below the sinus lining to create enough height for a stable implant. It is one of the most studied and most successful procedures in implant dentistry.
The sinus itself is not something to be afraid of — it's simply an air space. The goal of a sinus lift is to make sure your implant is sitting in solid bone, not in empty space.
This Patient's Case: Why We Found the Problem During Surgery
This patient had already gone through an earlier bone grafting procedure about a year before. When we looked at her panoramic X-ray and 3D CBCT scan ahead of time, it looked like she had about 7 millimeters of bone height before the sinus floor. That is on the lower end, but it can still work in some cases.
The 3D scan is very important for planning. Unlike a flat 2D X-ray, a CBCT scan lets us measure the area in three directions: height, width, and depth. This helps us see how much usable bone is really there and lets us plan the surgery more accurately before making any incision.
But once we started surgery and I began drilling, I found that even though the bone height looked okay, the bone itself was very soft. Bone quality matters. Soft bone does not grip the implant as well, and that early tight fit is very important for long-term success.
At that point, I had a choice: place the implant into soft bone and hope it stayed stable, or change the plan and do a lateral window sinus lift right then to give the patient a better result. I chose the second option.
How a Lateral Window Sinus Lift Works — Step by Step
Here's what happens during this procedure, in plain language:
Step 1: The Incision and Lifting the Gums
We make an incision along the gum line and gently lift the gum tissue away from the bone on both sides. This lets us clearly see the outside wall of the upper jawbone.
Step 2: Making the Side Window
Using a special instrument or a very small drill, we create a small opening in the side of the bone. This opening acts like a window and lets us reach the sinus area from the side.
Step 3: Lifting the Sinus Lining
This is the most delicate part of the procedure. Inside your sinus is a thin lining called the Schneiderian membrane. It is very thin and soft, almost like wet tissue paper. Using special tools with rounded tips, we gently lift this lining upward to create space underneath it.
The lining should not tear. A small tear can often be managed, but a larger tear needs to be repaired before moving forward. This is one reason why sinus lifts should be done by someone with surgical training and experience.
Step 4: Adding the Bone Graft Material
Once the lining is lifted, we place bone graft material into the new space we created. For this patient, I used a combination of:
- Allograft (sterile donated human bone) — helps support new bone growth
- Xenograft (cow-derived bone material) — helps keep the space full and supports long-term bone strength
This combination has given me very good results over time, which is why I use it often in my practice. These graft materials are sterile, processed for safety, and have been used successfully for many years.
Step 5: Optional — Placing a Collagen Membrane
Some surgeons place a collagen membrane over the opening before closing the area. This can help keep the graft material in place. But it is not always needed when the sinus lining has been lifted properly, because the lining itself can help hold the graft.
Step 6: Closing and Healing
The gum tissue is stitched back into place. The bone graft then needs time to heal. During healing, blood vessels grow into the area and your body slowly turns the grafted area into living bone.
For sinus lifts, I usually recommend waiting 5 to 6 months before the implant is fully used for chewing. This gives the new bone enough time to become strong and stable.
Why Did We Choose a Zirconia Implant for This Patient?
This patient specifically wanted a metal-free option using a ceramic implant. I hear this more often now, and it is a valid preference — especially for patients who are interested in holistic or biological dentistry.
Here's a simple comparison of zirconia and titanium implants:
| Feature | Titanium Implants | Zirconia Implants |
|---|---|---|
| Material | Medical-grade titanium alloy | Ceramic (zirconium dioxide) |
| Metal-free? | No | Yes — 100% ceramic |
| Track record | 40+ years of clinical data | Newer, but more research is growing |
| Osseointegration (how well the implant bonds with the bone) | Excellent — gold standard | Very good — similar in newer studies |
| Aesthetics | Gray color can sometimes show through thin gums | White — can look more natural |
| Biocompatibility (how well the body accepts the material) | Excellent for most patients | Excellent; often preferred by metal-sensitive patients |
| Availability | Wide range of sizes/designs | Fewer design options |
| Best for | Most implant patients | Holistic/metal-free patients, thin gum tissue cases |
For this patient, zirconia was a very good choice. She strongly preferred metal-free dentistry, she had enough bone after the sinus lift, and zirconia's white color blends in nicely with the surrounding teeth and gums. We were able to respect her preferences while still following a safe, proven treatment plan.
What the Before and After Imaging Showed
Looking at her post-operative 3D scan:
- The newly added bone was clearly visible below the lifted sinus lining.
- The zirconia implant was properly placed within the grafted area.
- The bone width was enough for a wider implant.
- The side-view scan showed the implant was fully surrounded by bone, not air.
This is exactly what we want to see. The combination of donated human graft material and cow-derived graft material healed well, and the implant was surrounded by healthy bone on all sides.
Common Questions Patients Ask About Sinus Lifts
Is a sinus lift painful?
The procedure is done with local anesthesia, so you should feel pressure and movement but not pain. After the procedure, most patients say it feels similar to having a tooth removed. Usually, the discomfort can be managed with over-the-counter pain medicine and prescription medicine if needed. Swelling in the cheek area is common and usually gets better within 7 to 10 days.
How long does a sinus lift take to heal?
The gum tissue usually heals in about 2 weeks. The bone graft takes much longer to fully heal. For a lateral window sinus lift, we usually wait 5 to 6 months before placing or fully using the final implant. In some simpler cases, the implant can be placed at the same time.
What are the risks?
The most common problem is a tear in the sinus lining. A small tear can usually be repaired during the procedure. More serious problems are rare, but can include a sinus infection, implant failure, or loss of some graft material. Overall, sinus lifts have a very good success rate when done by an experienced specialist.
Can I eat normally after the procedure?
You'll need to eat soft foods for the first week. Do not blow your nose hard, drink through straws, or sneeze with your mouth closed for at least 2 weeks. Those things can create pressure that may disturb the sinus lining or the graft.
Do I definitely need a sinus lift, or can we avoid it?
That depends on your anatomy. Some patients have enough bone and do not need a sinus lift. Others do not have enough bone and need one before an implant can be placed. A CBCT 3D scan is the best way to know for sure. In some cases, shorter implants or different implant positions may help avoid the sinus area.
The Bottom Line
Sinus lifts are not something to fear. They are a well-known and reliable procedure that helps many patients get dental implants when they otherwise would not have enough bone. When we use proper 3D imaging, good technique, and the right graft materials, results are usually very good.
And if you care about holistic or metal-free dentistry — like the patient in this case study — zirconia implants can be a real option supported by growing research.
If you have questions about your own situation, I encourage you to learn more about the sinus lift procedure and talk with a board-certified periodontist or oral surgeon who performs these procedures regularly. Ask to see before-and-after cases. Ask what grafting material they use and why. These are smart questions for any patient to ask.
About Dr. Choi
Dr. Choi has been a board-certified periodontist since 2011 and focuses on dental implants, sinus lifts, bone grafting, and holistic or metal-free implant options including zirconia implants. Follow his educational YouTube channel for more real patient cases explained in plain language.
