Tooth sensitivity occurs when the protective enamel on your teeth wears thin or your gums recede, exposing the softer dentine layer underneath. Dentine contains microscopic tubules that lead directly to the nerve, which is why hot, cold, sweet or acidic foods and drinks can trigger a sharp, sudden pain.
Sensitive teeth are not something you should simply put up with. They are often a sign that your enamel is thinning, your gums are receding or an underlying dental condition needs attention.
Hard or medium bristles can wear down enamel and irritate gum tissue, making sensitivity worse over time. Switching to a soft-bristled toothbrush reduces the mechanical abrasion on your teeth while still cleaning effectively.
| Bristle Type | Effect on Sensitive Teeth |
|---|---|
| Hard | Can accelerate enamel wear and gum recession — avoid if teeth are sensitive |
| Medium | Acceptable for healthy teeth but may irritate sensitive areas |
| Soft | Recommended for sensitive teeth — cleans effectively without damaging enamel |
| Ultra-soft | Best for severely sensitive teeth or post-treatment care |
Apply gentle pressure when brushing and use small circular motions rather than aggressive back-and-forth scrubbing. An electric toothbrush with a pressure sensor can help you maintain the right technique.
Not all toothpastes are the same. If you have sensitive teeth, choose a toothpaste that contains these two key ingredients:
Many brands market themselves specifically for sensitive teeth. Check the ingredients list rather than relying on branding alone. Use the toothpaste consistently for at least two weeks before expecting noticeable improvement — desensitising ingredients need time to build up their protective effect.
Sugar feeds the bacteria that produce acid in your mouth, and acidic foods directly erode enamel. Both make sensitivity worse.
| Category | Examples | Why They Worsen Sensitivity |
|---|---|---|
| Sugary foods | Sweets, chocolate, biscuits | Feed acid-producing bacteria |
| Fizzy drinks | Cola, lemonade, energy drinks | High in both sugar and acid |
| Acidic fruits | Citrus, tomatoes, pickles | Directly erode enamel |
| Hot beverages | Coffee, tea | Can trigger pain on exposed dentine |
Switching to a diet richer in whole foods, calcium-rich dairy products and non-acidic vegetables supports enamel strength and reduces sensitivity triggers. learn more
A saltwater rinse is a simple, inexpensive home remedy that can help reduce sensitivity and bacterial growth in your mouth. Salt creates an alkaline environment that discourages harmful bacteria.
How to make a saltwater rinse: Add two teaspoons of table salt to a cup of warm water. Swish the solution around your mouth for 30 seconds, then spit it out. Repeat once in the morning and once in the evening.
Saltwater rinses are not a substitute for brushing and flossing. They are a helpful supplement to your daily oral hygiene routine, particularly when your teeth are feeling sensitive.
If sensitivity persists despite home remedies, it is important to see a dentist. Tooth sensitivity can be a symptom of cavities, cracked teeth, gum disease or enamel erosion — all of which require professional treatment.
At Pure Smiles in Fulham, we advise patients to visit at least twice a year so we can monitor tooth and gum health. During your appointment, we can identify the cause of your sensitivity and recommend targeted treatment, which may include fluoride varnish, bonding to cover exposed root surfaces, or a referral to our hygienist for gum health management. learn more
If sensitive teeth are affecting your daily life, book an appointment at Pure Smiles. We have two practices in Fulham: 257 New Kings Road, SW6 4RB and 750a Fulham Road, SW6 5SH.
Call 020 7736 6276 to speak with our team. learn more
Sudden tooth sensitivity can be caused by enamel erosion, a new cavity, a cracked tooth, gum recession or recent dental work. If sensitivity appears without an obvious cause, book a check-up at Pure Smiles Fulham so your dentist can identify the problem.
Yes. Toothpastes containing potassium nitrate and stannous fluoride are clinically proven to reduce sensitivity when used consistently. Most patients notice improvement within two to four weeks of daily use.
Sensitivity can indicate cavities, gum disease, cracked teeth or advanced enamel erosion. While it is often manageable with home care, persistent or worsening sensitivity should always be assessed by a dentist.
You do not need to avoid them entirely, but you may want to let very hot drinks cool slightly and avoid biting directly into ice-cold foods. Addressing the underlying cause of your sensitivity — whether through desensitising toothpaste, dietary changes or dental treatment — is more effective than simply avoiding triggers.
