What is inflammation around an implant, and how can you tell?

In a natural tooth, there is a flexible connective tissue between the root and the bone called the periodontal ligament. It acts as a cushion and, thanks to its blood supply, contributes to the body's defences. An implant has no such ligament; it is in direct contact with the bone. That is an advantage mechanically but a different situation biologically: when inflammation starts, there is no intermediate layer to slow it down.

The process starts the same way as with a tooth. Bacterial plaque builds up on the surface of the implant and the bridge on it; if it is not cleaned away, the gum around it becomes inflamed, red and swollen, and bleeds when you brush. This stage is called peri-implant mucositis, and it has one important feature: because it affects only the soft tissue, it reverses with proper cleaning and a professional session. In other words, if it is caught in time, nothing is lost.

If the inflammation does not stay in the soft tissue and reaches the bone, the picture changes. This is called peri-implantitis. The bone holding the implant starts to break down in the direction the inflammation is spreading; a pocket forms between the gum and the implant and gets deeper, and sometimes pus comes from it. The key sentence here is this: bone that has been lost does not grow back with treatment. The aim of treatment is to stop it progressing, not to get back what has been lost.

The hardest part is the absence of pain. With a natural tooth, sensitivity, pain or the tooth becoming loose give an early warning as inflammation progresses. An implant has no nerve of its own, so the process is often silent. By the time the implant starts to move, the damage is largely done, because an implant that moves has lost its anchorage. That is why the early warning comes not from what you feel but from the measurements taken at check-ups.

It is also known who it affects more often. The groups that stand out are people who have had gum disease before, people who smoke, people whose blood sugar is not under control, and people who do not come for regular maintenance. There is also a cause that comes from the design: a bridge that a toothbrush and an interdental brush cannot reach cannot be cleaned, however careful you are. Every surface that cannot be cleaned is a starting point for inflammation.

One last distinction matters: not every problem around an implant is inflammation. An uneven distribution of load can also cause bone loss around an implant and can look similar. The two are treated differently: one with cleaning and decontamination, the other with bite adjustment and a review of the load-bearing structure. The right treatment follows the right diagnosis, which is why the findings need to be assessed together with imaging.

What decides how well treatment will work is how early the problem is caught. The distinction below is the framework that will be discussed when you come to the clinic.

The diagnosis does not rest on a single finding but on reading three measurements together. A decision made without these three is a guess.

1. 1

   Measuring the pocket depth

   The groove around the implant is measured with a thin probe. A pocket that has deepened shows that the tissue is coming away from the implant. The real value of the measurement is not a single number but the comparison with the previous one.

2. 2

   Checking for bleeding and pus

   Bleeding when the probe touches the tissue shows that the inflammation is active. Pus coming from the pocket is a more advanced finding and calls for a quicker assessment.

3. 3

   Comparing the bone level on X-rays

   Whether there has been bone loss can only be seen on imaging. If there is an X-ray taken straight after treatment, the comparison is reliable; that is why it matters that the first X-ray is kept.

4. 4

   Pinning down the cause

   Is it inflammation, an uneven load, a design that cannot be cleaned, or cement left behind in the tissue when the bridgework was fitted? Each is treated differently. Cleaning carried out without finding the cause only puts the problem off.

5. 5

   Non-surgical cleaning

   The implant surface and the bridgework are cleaned with instruments that do not damage the surface, supported with an antiseptic if needed. In most early cases this is the first step, and it is continued with close follow-up.

6. 6

   Surgery if needed

   When the non-surgical route is not enough, the gum is lifted back to reach the implant surface directly and clean it. Depending on the area, the bone level may be reshaped or graft material may be used; what the result will be depends on the shape of the remaining bone.

Here prevention works better than treatment, because the bone that has been lost does not grow back. The points below have a proven effect.

What sets this apart from other implant problems is how silent it is. Knowing the points below changes the decision to go for a check-up.

Treatment does not end with one session; what really decides the outcome is the follow-up routine afterwards.

1. The first few days

   After cleaning, the gum may be tender and bleed slightly. Stopping brushing the area makes things worse; keep cleaning it gently but regularly.

2. The first six weeks

   How the inflamed tissue is responding is assessed during this time. The expected result is less bleeding and a shallower pocket. If nothing has changed, the next step is discussed.

3. If surgery was done

   The gum takes a few weeks to heal and the area may look different: the gum line recedes, and more of the implant may become visible. This is a known result of the treatment and a detail that should be discussed from the outset.

4. Long-term follow-up

   In a mouth that has had peri-implantitis once, check-ups become more frequent. Measurements are recorded at every session; the bone level staying stable is the only real sign that the treatment has worked.

It is not possible to give a single figure here: the same problem can be resolved with one cleaning session, or it can go as far as surgery and removing the implant. These are the items that determine the cost:

The stage at which it is caught

A problem affecting only the gum is resolved in a single session. Once it has reached the bone, it needs surgery, extra sessions and long follow-up. The difference between the two is the difference between going for check-ups and not going.

How many implants are affected

A problem confined to one area and one that has spread across the mouth are not the same job. If the cause is shared, the treatment covers the whole mouth too.

Whether the bridgework needs to change

If the problem stems from a design that cannot be cleaned, remaking the bridge comes into consideration, and this becomes the largest item of the cost. But if it is not corrected, the same inflammation comes back.

Whether the implant can be saved

If removal is needed, the process leads into a new plan: healing, assessing the area and a new implant. This is the scenario that costs many times more than acting early.