If you can see the outline of your teeth through your gums, or the gum over them looks thin, gray or almost see-through, you are looking at the roots of your teeth under a thin layer of gum. Often that is simply how your gums are built. Sometimes it is an early sign of gum recession or bone loss that is worth catching now. This article explains how to tell the difference.
Published September 2026
What you are actually seeing
Each tooth sits in a socket of bone, and the bone is covered by gum. Where the bone and gum over a root are thin, the root shows through as a ridge or a shadow. You may be able to see it, feel it with your tongue or finger, or both.
It is most common:
- on the lower front teeth, where the bone and gum are naturally thin
- over the upper canines (eye teeth), which have long roots that bulge outward
- on any tooth that sits further toward the lip or cheek than its neighbors
The common causes
Naturally thin gums. Some people are born with thin, delicate gum tissue and thin bone over the roots of their teeth. If it has always looked this way, looks similar on both sides, and your gums do not bleed or recede, it is usually just your anatomy. It is still worth knowing about, because thin gums recede more easily.
Gum recession. The gum edge pulls back and exposes the root. Teeth look longer, there may be a notch or a yellower band near the gum line, and the exposed root is often sensitive to cold. Brushing too hard, gum disease, teeth that sit toward the lip, and smoking all make it more likely.
Bone loss from gum disease. Advanced gum disease (periodontitis) destroys the bone that holds teeth in place. The gum follows the bone down and the roots become more visible. It usually comes with other signs: bleeding when you brush, bad breath, gums that look swollen, or teeth that feel loose. See gum disease treatment.
Teeth moved by braces or aligners. When teeth are moved outward, for example lower front teeth brought forward to make room, the thin bone over their roots can thin further. It is one of the things we check before and during orthodontic treatment.
Something dark under the gum. Gum that looks gray rather than just thin can be showing something underneath: a tooth that has darkened because its nerve has died, the metal edge of an old crown, a metal post inside a root-treated tooth, or a small patch of old filling material in the gum. Most of these are harmless, but a single tooth that has changed color should be checked.
When it is normal, and when to get it checked
It is usually nothing to worry about if:
- it has looked this way for as long as you can remember
- it looks much the same on both sides
- your gums are pink and firm and do not bleed when you brush
- your teeth do not look longer than they used to
Book a check if:
- your teeth look longer, or the gum line has moved
- a tooth is sensitive to cold near the gum line
- your gums bleed, or look red or swollen
- a tooth feels loose, or your bite has changed
- one tooth, or the gum over it, has turned gray or dark
- it started during or after orthodontic treatment
What we check
At an examination we measure how far the gum has receded and how deep the space is between each tooth and its gum, which tells us whether gum disease is involved. X-rays show the bone level around the roots. We also look at how you brush, how your teeth meet, and whether any tooth has changed color.
What can be done
If it is just thin gums, the job is to keep them. Use a soft toothbrush with light pressure, angle it at the gum line instead of scrubbing sideways, and keep up regular check-ups so any change is spotted early.
If gum disease is involved, treating it comes first. That usually means a deep cleaning under local anesthetic, followed by more frequent maintenance visits. Treatment stops the bone loss; it does not regrow bone that has already gone.
If exposed roots are sensitive, a desensitizing toothpaste used every day often makes a real difference.
If recession is getting worse, a gum graft can cover exposed roots and thicken thin gum. This is specialist surgery, and we refer you to a periodontist (a gum specialist) for it.
Receded gum does not grow back on its own. What you can do is stop it going further, which is why it is worth having it looked at early.
In children
In a child, a bump or outline in the gum is often the next adult tooth on its way, especially the upper canines, which can be felt under the gum above the baby tooth for months before they come through. That is normal. If a baby tooth is still firmly in place long after the adult tooth should have arrived, mention it at the next check-up. See children’s dentistry.
Common questions
Is it normal to see your teeth through your gums?
Often, yes. Many people have thin gum and bone over the roots of their lower front teeth and upper canines, and the roots show through. If it has always looked that way, your gums do not bleed and your teeth do not look longer, it is usually just anatomy. A change is what matters.
Why do my gums look see-through or transparent?
Thin gum tissue lets the color and shape of the root underneath show through, so the gum can look translucent or slightly gray. It is common over the lower front teeth. Gum that looks gray over one tooth only should be checked, because a darkened tooth or old metal can cause the same look.
Why can I feel my teeth through my gums?
The ridges you feel are the roots of your teeth under thin bone and gum, most often over the canines and lower front teeth. On its own that is common. If the gum line is moving, or the teeth feel loose or sensitive, have it checked.
Can gums grow back over exposed roots?
Not on their own. Recession can be stopped from getting worse, and a gum graft, carried out by a periodontist, can cover exposed roots and thicken thin gum when that is needed.
Can braces or Invisalign make it worse?
They can, when teeth are moved outward past the thin bone over their roots. That is why we check gum thickness and recession before straightening teeth, and keep an eye on it during treatment.
Does it mean I am going to lose my teeth?
Not usually. Thin gums on their own do not loosen teeth. Bone loss from untreated gum disease can, which is why bleeding gums, bad breath or loose teeth alongside visible roots are worth a prompt visit.
Want someone to take a look? Call 201-425-8600 or request an appointment. We are at 115 Christopher Columbus Drive, Suite 200, two minutes from the Grove Street PATH. More articles and treatment guides are on our patient guides page.