Your teeth look longer than they used to, a mouthful of cold water makes you wince, your mouth is dry when you wake up: gums after 50 change, and those signals are not in your head. None of it is an inevitable consequence of age, but they are real changes that call for a different routine from the one you had in your thirties. Here is what is happening and how to adapt to it.
Why do teeth seem longer as you get older?
It is not the tooth getting longer: it is the gum pulling back. This is called gum recession, and it is clearly more common after 50. It is not caused by age itself but by the build-up of several decades of factors: brushing that is too heavy or too horizontal, tartar, past chronic inflammation, sometimes tooth grinding.
The problem is not cosmetic. When the gum pulls back, it uncovers the root of the tooth, which is not protected by enamel but by cementum: a far thinner tissue — a few tens of micrometres at the neck of the tooth — and much less mineralised. Where enamel begins to demineralise at around pH 5.5, cementum and dentine give way from a pH of roughly 6.2 to 6.7. An exposed root is therefore vulnerable to far more ordinary levels of acidity.
Two concrete consequences follow:
- Sensitivity to cold, sugar or acid. Exposed dentine contains thousands of micro-channels that communicate with the nerve; a simple draught of air can be enough to trigger pain.
- Root decay. It progresses faster than enamel decay, is often painless at first and easily goes unnoticed under the gum margin. That is one of the reasons the annual check-up matters more after 50.
The most widespread mistake: brushing harder because it feels like "it is not cleaning properly". On an exposed root, that is doubly counterproductive — cementum wears away in a few years where enamel would have held out for decades. Switch to soft bristles and let the toothpaste do the work, not your wrist.
Dry mouth: the most underestimated change
Saliva is the most effective protection system in your mouth: it cleans, buffers acidity thanks to its bicarbonates, and supplies the calcium and phosphates that repair enamel continuously. A mouth normally produces something in the order of half a litre to a litre of saliva a day.
After 50, though, that flow often falls. Contrary to a common belief, age alone explains little of this: the main cause is medication. Several hundred molecules list dry mouth among their side effects, and long-term treatments multiply at precisely this stage of life.
| Drug family | Examples of common uses |
|---|---|
| Antihypertensives (diuretics, beta-blockers) | Blood pressure |
| Antidepressants and anti-anxiety medication | Mood, sleep, anxiety |
| Antihistamines | Allergies, rhinitis |
| Overactive bladder treatments | Urinary problems |
| Certain painkillers and muscle relaxants | Chronic pain |
For women, there is also the menopause. Falling oestrogen levels frequently come with dryness of the mucous membranes, including in the mouth, sometimes with a burning sensation on the tongue and a more fragile gum. These are entirely legitimate reasons to seek advice, to be raised with your doctor or your dentist rather than put up with in silence.
Less saliva means less natural cleaning, less acid neutralisation and less remineralisation: the ground becomes favourable to decay and to gum inflammation alike. Do not play this symptom down — report it to your GP, who can sometimes adjust a treatment. Never change a dosage on your own initiative.
How to adapt your routine in practice
The goal changes in nature: it is no longer about scrubbing to whiten, but about cleaning without wearing down, and protecting surfaces that have become more fragile.
- A soft-bristled brush, always. Medium or hard bristles have no place once roots are exposed. An electric toothbrush with a pressure sensor helps if you tend to press hard.
- A gentle technique, angled at 45° towards the gum, small movements, never heavy horizontal scrubbing at the neck of the tooth.
- A fluoride toothpaste with low abrasiveness. Fluoride at 1450 ppm remains the benchmark for protecting enamel and cementum, and abrasiveness below RDA 70 is a good marker when roots are uncovered. Steer clear of "extreme whitening" formulas and homemade recipes with pure baking soda.
- Interdental brushes rather than floss as soon as the spaces open up. This is the most useful change on this list: a receded gum leaves a triangular gap that floss no longer fills. An interdental brush in the right size cleans far better, and you often need two or three sizes depending on the area. Our complete guide to an oral care routine sets out the order of each step.
- Regular hydration. Water within reach, sugar-free chewing gum, and an eye on alcohol and tobacco, which dry things out further.
- A dental check-up at least once a year, including an examination of the necks of the teeth: root decay is often silent until an advanced stage.
A word about dentures, bridges and implants, which are more common at this age: they need specific cleaning around the abutments, where plaque builds up without being visible. Ask your practitioner to show you the technique suited to your case.
Which toothpaste should you choose after 50?
The right instinct is to think in terms of gentleness, not power. Gentle Coconut Whitening works on surface stains with a non-aggressive texture and a light taste, which suits sensitive tooth necks and anyone for whom a very strong mint has become uncomfortable. Pomegranate & Sakura Blossom, sugar-free and gentle in profile, is a good option to alternate with, particularly if intense mint heightens your feeling of a dry mouth.
You can perfectly well alternate the two: one in the morning, the other in the evening. For a personalised pointer, our two-minute quiz will guide you.
It needs to be said plainly: a toothpaste is not a treatment. It helps control plaque and protect enamel day to day, but it does not cure established recession, periodontitis or root decay, and it never replaces a dental appointment for a medical problem. A gum that bleeds regularly, a tooth that moves or pain that lasts deserve an appointment, not a change of tube.
FAQ
Can a gum that has receded grow back?
Spontaneously, no: the lost tissue does not rebuild itself. Recession can, however, be stabilised by removing the causes — brushing that is too heavy, plaque, inflammation. A gum graft is sometimes offered, but that is a decision for your dentist or a periodontist after examination.
Why have my teeth become sensitive to cold after 50?
Most often because the root, covered by cementum and dentine rather than enamel, has ended up exposed. Dentine contains microscopic channels that carry temperature changes to the nerve. Non-traumatic brushing helps, but any new or intense sensitivity should be assessed by a professional to rule out decay or a crack.
My medication gives me a dry mouth, what should I do?
Never stop or change a treatment on your own. Report the symptom to your GP: an adjustment or a change to the time you take it is sometimes possible. In the meantime, drink regularly and chew sugar-free gum.
Is whitening inadvisable after 50?
It is not a question of age but of the state of your teeth. On exposed roots and weakened gums, aggressive products noticeably increase sensitivity. A low-abrasiveness toothpaste that works on surface stains remains the sensible step; for anything beyond that, a dentist's opinion is essential.
Should you give up floss?
Not necessarily, but it loses effectiveness as soon as the gaps between the teeth open up. Interdental brushes then clean a far wider surface. Many people use both depending on the area of the mouth: brushes where the space allows it, floss on contact points that are still tight.
Key takeaways
After 50, three changes shape everything: the gum pulls back and uncovers a root far less resistant than enamel, saliva flow drops — often because of medication rather than age — and the menopause can heighten dryness in the mouth. The answer is not to brush harder, but more gently and more thoroughly: soft bristles, a low-abrasiveness fluoride toothpaste (RDA under 70), interdental brushes, hydration and an annual check-up.
Day to day, Gentle Coconut Whitening and Pomegranate & Sakura Blossom offer two gentle formulas that are easy to alternate; the quiz helps you decide. If you would rather alternate, the Gums & Gentleness Pack brings together the three gentlest formulas in the range, all under an RDA of 70. And if your gums bleed or swell regularly, make an appointment with your dentist: they, and they alone, can make a diagnosis.