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At a glance
- Gum recession is when the gum tissue pulls back, exposing more of the tooth or its root.
- Common causes include gum disease, aggressive brushing and teeth grinding.
- It can cause tooth sensitivity, root decay and a longer-looking tooth.
- Recession does not grow back on its own, but it can be halted and sometimes repaired with grafting.
What gum recession is
The gums normally hug the teeth and cover the root, sitting as a snug collar around each one. In recession, the gum margin gradually pulls back towards the root, exposing surfaces that are softer and more sensitive than the enamel-covered crown. It is a common finding and often develops so slowly that many people only notice it when a tooth starts to look longer or when a cold drink triggers a twinge. Mild recession may simply need monitoring, but it matters because it can lead to sensitivity, decay of the exposed root, and — when it stems from gum disease — loss of the support that holds a tooth firmly in place.
An important point to understand is that once gum tissue is lost, it does not regenerate on its own. Unlike a graze on the skin, receded gum does not creep back over the root. This is why the focus of care is on stopping any further recession, and — where the exposed root is causing problems — treating the affected area rather than waiting for it to heal by itself.
Symptoms to look out for
The earliest sign is often teeth that appear longer than before, because more of the tooth is on show. You may feel a small notch or step at the gum line where the gum has dropped away, and the root surface below may look darker or more yellow than the crown. Sensitivity is very common: exposed roots can react sharply to hot, cold or sweet foods and drinks, or to cold air. In more advanced cases, particularly when gum disease is involved, teeth may feel loose or wobbly as the supporting bone and tissue reduce. Recession linked to gum disease may also come with bleeding when brushing, red or swollen gums, and bad breath. Because recession can be uneven, one or two teeth may be far more affected than the rest.
Causes and contributing factors
Gum (periodontal) disease is a major cause. Long-standing inflammation and the build-up of plaque and tartar destroy the gum and bone that support the teeth, and the gum line drops as a result. Brushing too hard, or using a hard-bristled brush, is another leading cause; over time a forceful scrubbing action simply wears the gum away, often on the outer surfaces. Other contributors include:
- Teeth grinding or clenching, which places heavy load on the teeth and the gum around them.
- A build-up of tartar, the hardened plaque that irritates the gum and keeps inflammation going.
- The position of the teeth — crowded, prominent or misaligned teeth may have thinner gum coverage.
- A naturally thin gum type, which is more prone to receding.
- Tongue or lip piercings, where jewellery rubs repeatedly against the gum.
- Smoking and other tobacco use, which harms gum health and healing.
Ageing can also play a part, as gums tend to recede a little over a lifetime. Often more than one factor is at work at the same time — for example, a thin gum type combined with vigorous brushing.
Why receded gums do not grow back
Gum tissue does not have the ability to regenerate over an exposed root once it has been lost. This is a key difference from many other tissues in the body. Because of this, the aim of care is twofold: first, to identify and remove whatever is driving the recession so it does not get worse, and second, where the exposed root is causing sensitivity, decay risk or an appearance concern, to consider a procedure that covers it. Catching recession early, before it becomes severe, gives the best chance of protecting what is there.
How it is assessed
A dentist examines the gums carefully, measures how much recession is present and checks the health of the surrounding tissue. They look for signs of gum disease, assess how the teeth meet and whether grinding may be a factor, and try to identify the underlying cause — for instance, brushing technique, a thin gum type or plaque build-up. This assessment guides what, if anything, needs to be done. Severe, progressing or complex cases may be referred to a gum specialist, known as a periodontist. In Singapore, this care is available at general dental clinics and, for specialist input, through referral to a periodontist.
Treatment depending on cause and severity
Treatment is tailored to the cause and to how much recession is present. For many people, the first and most important step is removing the cause. If brushing is too forceful, the dentist will show a gentler technique and recommend a soft-bristled brush. If gum disease is present, professional cleaning — including deep cleaning below the gum line where needed — helps bring the inflammation under control. If grinding is a factor, a custom night guard can reduce the load on the teeth and gums.
For the sensitivity that exposed roots often cause, desensitising toothpaste and in-clinic desensitising treatments can help settle the discomfort, and fluoride helps protect the vulnerable root surface from decay. Where recession is significant — the root is very exposed, persistently sensitive, at risk of decay, or the appearance is a concern — a dentist or periodontist may recommend a gum graft or another surgical technique to cover the exposed root when appropriate. These procedures can reduce sensitivity, protect the root and improve how the gum line looks. Not everyone needs surgery; for mild, stable recession, careful monitoring together with good habits is often all that is required.
Prevention and self-care
Because over-vigorous brushing is such a common cause, switching to a soft-bristled toothbrush and a gentle technique is one of the most effective changes you can make. Brush with small, light movements angled towards the gum line rather than a hard, sawing scrub, and let the bristles do the work; an electric brush with a pressure sensor can help if you tend to press too hard. Clean between the teeth daily to remove the plaque that drives gum disease, and keep up regular dental check-ups and professional cleaning so that tartar and early gum problems are dealt with promptly. Not smoking protects gum health, and managing a grinding habit — often with a night guard — takes strain off the gums. Treating gum disease early is the single best way to protect against further recession.
When to see a dentist
See a dentist if you notice your teeth looking longer, a step or notch at the gum line, exposed roots, or sensitivity that does not settle. Bleeding, swollen or receding gums, loose teeth, or persistent sensitivity should always be assessed, as these can point to gum disease that needs treatment. A dental review can confirm the cause, halt further recession and, where helpful, discuss options to cover the exposed root. This guide is general information and is not a diagnosis of your own teeth or gums.
Common questions
Can receding gums grow back?
Lost gum tissue does not grow back naturally, but recession can be stopped, and a gum graft can cover exposed roots.
Is gum recession serious?
It can be, especially when caused by gum disease, because it may lead to sensitivity, root decay and eventually loose teeth if untreated.
Does hard brushing cause gum recession?
Yes. Brushing too hard, particularly with a stiff brush, is a common cause; a soft brush and gentle technique help.
Related guides
- Gum disease (periodontitis)
- Sensitive teeth & cavities
- Dental scaling & polishing
- Best dentists in Singapore
Sources
- HealthHub Singapore — gum health.
- Singapore Dental Association — periodontal care.
- American Academy of Periodontology — gum recession.
This article is for general information only and does not replace a consultation with a qualified dentist. Please seek personalised advice for your own teeth and gums.
