Gum Recession Guide: Causes, Symptoms and Care When Tooth Roots Show

Gum recession is a condition in which the gum margin moves toward the root, exposing the tooth neck and root that were once covered. It often happens when gum disease shrinks the bone under the gums, or when hard side-to-side scrubbing pushes the gums back. Exposed roots are easily sensitive to cold, so the cause is reduced first and, if needed, restoration of the worn area or a gum graft is considered. This guide follows information from Korea, including the Korea Disease Control and Prevention Agency (KDCA, 질병관리청).

Published 2026-11-08 · Updated 2026-11-08 · DentalStatics editorial team

Key facts

Gum recession and sensitivity	When gums recede, dentin near the root is exposed and becomes sensitive to outside stimuli (source: KDCA National Health Information Portal)
Incorrect brushing	Hard side-to-side brushing can push gums toward the root and wear a V-shaped notch at the tooth neck (source: KDCA National Health Information Portal)
Gum disease and tooth hypersensitivity	Reported to accompany 60-98% of periodontal disease cases (source: KDCA National Health Information Portal)
Surgery for recession	Gingival and alveolar mucosa surgery (free gingival graft, subepithelial connective tissue graft) (source: KDCA National Health Information Portal)
Restorative treatment	Worn tooth necks are filled with restorative material, which lasts longer than applying desensitizing agents (source: KDCA National Health Information Portal)

Why does gum recession happen?

The most common background is gum disease. When inflammation dissolves the bone under the gums, the gums covering it also move down, and the teeth look longer.

Brushing habits also matter a great deal. In Korea, the KDCA explains that hard side-to-side scrubbing pushes the gums at the tooth neck toward the root and, over time, can wear a V-shaped notch at the tooth neck. It says right-handed people often show this wear on the cheek side of the left teeth.

Loss of gum bone due to gum disease
Hard side-to-side scrubbing and rough bristles
Excessive bite force such as clenching or grinding
A tooth that has over-erupted because no opposing tooth meets it
Physiological changes with age

What symptoms point to gum recession?

If the tooth neck at the border of tooth and gum looks a different color, or the teeth look longer than before, recession may be suspected. Short, sharp sensitivity to cold water or cold air often comes with it.

The KDCA explains that tooth sensitivity itself is not a symptom of gum disease, but it can occur as gums recede because of gum disease. If gum bleeding or loose teeth accompany the sensitivity, it is better to have the gums examined first.

The exposed root surface has a thinner hard outer layer than the crown, so it is also vulnerable to cavities and wear. If you have recession, it is good to have the dentist check at regular visits whether the tooth neck has worn down or developed cavities.

Do receded gums grow back?

Gums that have receded rarely return to their original height on their own. That is why treatment for gum recession starts with managing the cause so the gums do not recede further.

If there is periodontitis, inflammation is first calmed with scaling and root planing. Switching to a soft toothbrush and learning at the dental clinic to sweep from gum toward tooth instead of scrubbing side to side helps slow the progress of recession.

What treatments are available?

Treatment is chosen according to the degree of sensitivity, the depth of the notch and how much root is exposed. The KDCA explains that if the tooth is worn and its shape is damaged, restorative treatment lasts much longer than applying a desensitizing agent.

A gum graft can cover exposed roots, but choosing the donor site is difficult and recession can recur after surgery, so the result is hard to guarantee in advance.

Desensitizing agents and toothpaste for sensitive teeth
Restorative treatment that fills worn tooth necks with restorative material
Gingival and alveolar mucosa surgery, in which a gum graft covers the exposed root

How can I keep recession from getting worse?

Remove plaque between the teeth every day with floss or interdental brushes, and have your gums checked every 3 to 6 months. Highly abrasive toothpaste can wear exposed root surfaces further, so switching to a gentler product such as toothpaste for sensitive teeth is recommended.

Clenching or grinding concentrates force at the tooth neck and can cause notches and cracks. If you have such habits, mention them during a gum visit and have your bite checked.

Common myths and facts

Myth: Gums recede in everyone with age, so no treatment is needed.

Age-related change exists, but gum disease or brushing habits are often the cause, and if the cause is not reduced, recession can keep progressing.

Myth: The harder and longer you brush, the healthier your gums.

Hard side-to-side scrubbing can push the gums toward the root and wear a V-shaped notch at the tooth neck.

Myth: Using toothpaste for sensitive teeth makes receded gums grow back.

Toothpaste for sensitive teeth can help reduce sensitivity, but it does not restore the height of gums that have already receded.

Frequently asked questions

If I have gum recession, do I always need a gum graft?

No. If sensitivity is mild and the recession is not advancing, it is often managed with brushing correction, desensitizing agents and restorative treatment. A graft is considered when much of the root is exposed or recession continues. Either way, correcting brushing habits comes first.

What should I do if my teeth stay sensitive even with sensitive-teeth toothpaste?

The KDCA advises visiting a dentist if symptoms continue even after brushing with toothpaste for sensitive teeth. Besides gum recession, notches at the tooth neck, cavities or tooth cracks may be the cause.

Is recession on only one or two teeth also gum disease?

If only some teeth have receded, a local cause such as brushing pressure is possible. Whether it is gum disease is checked with a pocket depth exam and X-rays. If recession is concentrated on the cheek side of teeth opposite the hand that holds the brush, brushing force is worth suspecting.

Is it true that scaling makes gums recede?

Scaling does not make gums recede. As gums that were covered by tartar or swollen settle down, the parts that had already receded become visible, and the KDCA also explains this as a natural phenomenon that appears as inflammation subsides.

Is gum recession treatment covered by health insurance?

Treatment of the underlying gum disease is often a covered item under National Health Insurance, but whether gum grafts or restorative materials are covered depends on their type and purpose. Check coverage item by item before treatment.

References

Korean version →