Sinus Lift for Upper Jaw Dental Implants in Shepperton

If you've been told you might need a "sinus lift" before having an upper back tooth replaced with a dental implant, the phrase can sound more alarming than it deserves. It's a routine, well-established procedure, done under local anaesthetic, that solves a very specific anatomical problem — and for many patients, it's the single step that makes an otherwise impossible implant possible.

Here's a straightforward explanation of what a sinus lift is, why it's sometimes needed, and what to expect.

Why the Upper Jaw Sometimes Runs Short of Bone

The upper jaw (the maxilla) sits directly below a pair of air-filled cavities in your face called the maxillary sinuses — one on each side, sitting just above your back teeth. In some patients the floor of the sinus dips down between the roots of the upper molars and premolars, and there's only a thin shelf of bone separating the tooth roots from the sinus itself.

Dental implants need a certain amount of solid bone height and width to be placed successfully. In the upper back jaw, that available bone height can be limited for two reasons:

• Normal anatomy. In some people, the sinus is simply large and hangs low over the back teeth, leaving less bone below it than an implant of standard length needs.
• Bone loss after tooth loss. When a tooth is removed and not replaced for a long time, the bone that used to support it gradually shrinks — and in the upper back jaw, that shrinkage tends to happen upwards, meaning the sinus effectively "expands" downwards into the space where the tooth roots used to be.

If your remaining bone height is less than what your implant needs, you have two options. Either use a shorter implant, if one can be safely placed, or add bone to the area first. Adding bone to the floor of the sinus is what a sinus lift does.

You can read more about the broader family of bone-building procedures we offer on our bone grafting page.

What a Sinus Lift Actually Involves

A sinus lift — sometimes called sinus augmentation or sinus floor elevation — sounds dramatic and, honestly, isn't. There are two main techniques, chosen based on how much bone we need to gain:

The internal (crestal) technique

Used when we only need to gain a small amount of extra bone height (typically a few millimetres).

The procedure is done from the top of the ridge, through the site where the implant will eventually be placed. Under local anaesthetic, we access the underside of the sinus floor, gently push the sinus membrane a small distance upwards, and pack graft material into the space we've created. In many suitable cases, the implant itself can then be placed at the same appointment — meaning one procedure, one recovery.

This is a minimally invasive procedure, and recovery is usually very similar to a straightforward implant placement.

The external (lateral window) technique

Used when we need to gain a larger amount of bone height.

A small window is made in the side wall of the sinus, above where the tooth used to be. The sinus membrane — a thin, delicate lining inside the sinus — is carefully lifted upwards, creating a space between it and the bone below. That space is filled with graft material, which over the following months turns into new, solid bone.

Depending on how much bone was originally available, the implant may be placed:

• At the same time as the sinus lift, if there was enough existing bone to hold the implant firmly while the graft matures around it, or
• Several months later, once the graft has fully integrated and formed strong new bone. In this second scenario, the sinus lift and the implant placement are two separate, staged procedures.

Your clinician will explain which approach applies in your specific case, based on 3D imaging (usually a CBCT scan) that shows exactly how much bone you have and where the sinus sits.

Why It's a Routine, Well-Established Procedure

Sinus lifts are one of the most reliably documented procedures in implant dentistry. The technique has been in use, and steadily refined, for around 45 years. Success rates for the sinus augmentation itself, and for implants placed in areas that have been grafted, are consistently very high in the published evidence.

That's not to say a sinus lift is trivial — it is a small surgical procedure, and it does need to be done well. But it's not experimental, it's not rare, and it isn't a sign that anything unusual is going on with your mouth. It's a specific answer to a very common anatomical situation.

At Confident Smile in Shepperton, we plan every sinus lift from detailed 3D scans, so we know exactly what to expect before we start — the height and shape of your available bone, the position and health of your sinus, and any anatomical variations that need to be worked around. You can read more about the sinus lift procedure specifically on our sinus lift page.

Healing Time Before Implants Can Be Placed

If your case allows for simultaneous placement (sinus lift and implant in the same visit), healing follows a similar timeline to a standard implant. You'll usually have a healing period of around three to six months before the final crown is placed, during which the implant integrates with the surrounding bone (both original and grafted).

If you need a staged approach — sinus lift first, implant placement later — the timeline typically looks like:

• Sinus lift procedure. Around 1–2 weeks of soft-food eating and gentle activity before you're back to normal day-to-day life.
• Graft maturation. Usually 4–9 months for the graft material to fully integrate and turn into new bone strong enough to hold an implant, depending on the size of the graft and your individual healing.
• Implant placement. A standard implant placement appointment once the bone is ready.
• Implant integration. A further 3–6 months for the implant to fuse with the bone.
• Final crown. Fitted once integration is complete.

It sounds like a long process — because it is. But the vast majority of that time is your body doing the work in the background while you go about normal life; the actual chair-time is much shorter than the calendar suggests.

Recovery: What to Expect

For most patients, recovery from a sinus lift is comparable to having a wisdom tooth removed, or slightly gentler:

• Some swelling around the cheek on the treated side for a few days, easing over the following week.
• Mild to moderate discomfort, managed with standard over-the-counter pain relief.
• A soft food diet for a week or two.
• Nose-related precautions for the first couple of weeks — no forceful nose-blowing, no using straws, avoiding scuba diving and flying if possible, sneezing with your mouth open rather than closed. These sound quirky but they're important, because sudden pressure changes could disturb the healing graft.
• Antibiotics and a saline or antimicrobial rinse to support healing.

Complications from sinus lifts are uncommon in experienced hands. The most common one to mention is a small tear of the sinus membrane during the procedure, which is usually detected and managed at the time and doesn't typically affect the final outcome.

Reassurance: Most Implant Patients Never Need One

Finally, and this matters: the majority of implant patients don't need a sinus lift.

Implants are placed in the lower jaw, in the front of both jaws, and in many upper back tooth positions without ever involving the sinus at all. Sinus lifts are specifically needed for upper back teeth (typically upper molar and sometimes premolar positions) where the available bone height happens to be limited.

If you're in the early stages of considering implants and haven't yet had a 3D scan, please don't assume a sinus lift is on the cards. It might not be — and if it is, it's a well-established, well-tolerated procedure that we do calmly and carefully.

Frequently Asked Questions

Is a sinus lift painful? The procedure itself is done under local anaesthetic, so you don't feel pain during it — only pressure. Afterwards, most patients describe the discomfort as moderate and easily managed with over-the-counter pain relief.

Will it change how my nose or sinuses feel? Not in the long term. In the immediate healing period you may feel some pressure or fullness in the cheek and nose on the treated side, which settles as the graft heals. Long-term, patients don't feel the graft is there.

Can I have my sinus lift and implant at the same time? Sometimes, yes — it depends on how much bone you already have. If there's enough existing bone to hold the implant firmly, the two can often be combined. If there isn't, we stage them.

How much does a sinus lift cost? Costs vary depending on the technique used, the size of the graft, and whether the implant is placed at the same time or separately. We'll walk through this transparently at your consultation.

The Next Step

If you're missing an upper back tooth, or you've been told you may not have enough bone for an implant, please don't rule out implants — a sinus lift may be the one step that changes the picture.

Get in touch with Confident Smile in Shepperton to arrange an implant assessment, and read more about our approach to dental implants, sinus lift procedures and bone grafting while you're here.