At UKRMED in Kyiv, Category I cystectomy is one of the surgical options used for a cyst found around a tooth root. The decision is made after imaging: the surgeon needs to see where the lesion ends, what is happening with the tooth and how easy the area will be to reach.
Quite often, the cyst is not the reason a patient comes to the clinic. The tooth may have been treated years ago. Nothing hurts. Then somebody takes a scan and notices a dark round area beside the root. Or there is a different story.
A small swelling appears on the gum, disappears, and comes back a month later. The tooth feels slightly uncomfortable when biting. Not enough to call it severe pain, but enough to know that something is not completely quiet there. That is when the scan becomes especially useful.
A dental cyst is basically a cavity with its own tissue lining. During cystectomy, the surgeon needs to remove that lining too. Opening the area and releasing the contents is not enough for this type of operation. The cyst is carefully separated from the surrounding bone and taken out.
Afterwards, the surgeon can inspect the space directly. Sometimes it is a neat cavity around one root. Sometimes the borders are less convenient than they looked on a simple dental X-ray. That difference matters during surgery.
Category I at UKRMED refers to the less extensive group of cystectomy procedures. The word “small” is useful, but it does not tell the whole story. Take two cysts with a similar diameter.
One sits beside a single root with enough bone around it. The other stretches toward a neighbouring tooth or lies in a spot that is harder to reach. On paper, they may look similar. For the surgeon, they are not the same job. This is why the category is selected after the scan has been reviewed.
Patients often ask this first. “Do I lose the tooth?” Not necessarily.
If the tooth is stable and the root can still be treated properly, there may be no reason to remove it. Sometimes the cyst is closely connected with the very end of the root. Then a tiny piece of that root may be removed during the same procedure.
This is the part dentists call root-end resection or apicoectomy. In other cases, the root tip is left alone. It depends on what caused the problem in the first place.
A small dental X-ray gives one flat view. That can be enough to notice a lesion, but surgery needs more detail. With CT, the surgeon can follow the cyst through the bone.
Is it centred around one root?
Does it reach the next tooth?
Is there a thin outer wall of bone left, or plenty of it?
The answer also changes depending on the jaw. With an upper tooth, the sinus may be only a short distance away. With a lower tooth, the nerve canal can be the nearby landmark. Knowing this beforehand is much nicer than meeting it unexpectedly during the operation.
Technically, yes. The cyst occupied space inside the jaw, so removing it leaves a cavity. In a Category I case, that cavity may be small enough to heal naturally.
It fills with blood first. Then the clot slowly turns into healing tissue, and later the area becomes more bone-like. The gum above it heals much faster than the deeper bone. So a patient may feel completely normal while the jaw is still rebuilding underneath.
Most patients notice swelling rather than anything happening inside the bone. The gum can feel tight. Chewing directly on that side may be annoying for a few days. There are sutures inside the mouth. The surgeon checks the wound later and tells the patient whether those sutures need to be removed. Food is usually simpler at first. Cleaning the area also takes a little more care than usual. Nothing exotic — just enough not to disturb a fresh surgical wound.
Because imaging is good at showing shape, but not every detail of what the tissue actually is. Several cystic lesions can look alike on CT. So the removed wall may be sent to histology. A small sample is examined under a microscope. That way, the final diagnosis comes from the tissue itself, not only from its outline on the scan.
At UKRMED in Kyiv, the important questions are fairly practical.
Where exactly is the cyst?
Which tooth is connected with it?
Can that tooth stay?
Does the root tip need any additional work?
How much bone is likely to remain afterwards?
Once those points are clear, the surgeon can decide whether the procedure fits Category I and plan the operation accordingly.
Yes. Some are discovered during an X-ray or CT before the patient feels anything unusual.
No. The tooth may remain if its condition and root treatment allow it.
Only when that part of the root is involved in the problem. It is not a routine step for every cyst.
A regular image can show the lesion, while CT gives a better idea of its depth and relationship with nearby structures.
In smaller defects, it often does. Bone restoration happens gradually after the soft tissue has already healed.
It depends on the real surgical volume, the type of anaesthesia and whether anything additional has to be done with the affected tooth.
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