- Seek care promptly
Sensitive Teeth (Dentine Hypersensitivity)
Why Your Teeth Hurt with Hot, Cold & Sweet — and How to Stop It
- Yelahanka, Bangalore | GardenCity Smiles
Tooth sensitivity is a sharp, brief pain triggered by hot, cold, sweet, or acidic stimuli. It affects roughly 1 in 3 adults and is almost always treatable once the cause is identified.
- Sensitivity that has appeared suddenly or is getting worse should be evaluated — it can signal decay or gum recession.
- Key Signs to Watch For
- Sharp, sudden pain when drinking hot tea, coffee, or soups
- Stabbing pain when eating ice cream, cold water, or cold foods
- Discomfort when eating sweet or acidic foods — citrus, vinegar-based foods
- Pain when brushing a particular tooth or area
- Sensitivity to cold air when breathing in through the mouth
- Brief pain when flossing near exposed root surfaces
Patient Education
Understanding This Condition
Healthy teeth are protected by enamel on the crown and cementum on the root. When these protective layers are lost, the underlying dentine is exposed. Dentine contains thousands of microscopic tubules — hollow channels that lead directly to the tooth nerve. When a stimulus reaches these open tubules, fluid inside them moves rapidly, triggering a sharp pain signal from the nerve.?
This mechanism explains why the pain is short — it lasts only while the stimulus is present, unlike pulpitis which lingers. It is sharp because of direct nerve stimulation, and predictable — you know which triggers cause it.
Generalised sensitivity across many teeth usually indicates enamel erosion. Sensitivity limited to one specific tooth is more likely a crack, cavity, or recession at that spot and needs urgent evaluation.
Signs & Symptoms
How to Recognise This Condition
Even mild symptoms warrant professional evaluation — early treatment is always simpler and less costly.
- Sharp, sudden pain when drinking hot tea, coffee, or soups
- Stabbing pain when eating ice cream, cold water, or cold foods
- Discomfort when eating sweet or acidic foods — citrus, vinegar-based foods
- Pain when brushing a particular tooth or area
- Sensitivity to cold air when breathing in through the mouth
- Brief pain when flossing near exposed root surfaces
Root Causes
Why This Happens
Understanding the cause is the first step to choosing the right treatment and preventing recurrence.
- Enamel erosion from acidic foods (citrus, carbonated drinks) or acid reflux (GERD)
- Gum recession exposing the root surface — roots have no enamel protection
- Vigorous brushing with a hard toothbrush wearing down enamel at the gum margin
- Teeth grinding (bruxism) flattening and thinning the enamel
- Recent dental treatment — temporary sensitivity after whitening or cleaning is normal
- Cracked tooth allowing stimuli to reach the nerve
- Gum disease causing attachment loss and root exposure
- Worn or chipped fillings with exposed margins
Treatment Options
How We Treat This at GardenCity Smiles
All treatments are explained fully during your consultation. We always recommend the most conservative effective option first.
In-Office Fluoride Varnish & Desensitising Agents
Professional-strength fluoride varnish is painted onto sensitive areas. It precipitates calcium fluoride crystals that plug the open dentinal tubules and remineralise softened enamel. Results are often felt within 24–48 hours.
Dental Bonding (Composite Resin Sealing)
For isolated areas of exposed root or enamel loss, a thin layer of tooth-coloured bonding resin is applied to seal the dentinal surface. Particularly effective for sensitivity caused by gum recession on front teeth.
Gum Grafting (Connective Tissue Graft)
When gum recession is significant, a small graft of tissue is placed to cover the exposed root — permanently restoring the gum margin, eliminating sensitivity, and improving aesthetics.
Custom Night Guard for Bruxism
If grinding is the culprit, a custom-fitted acrylic splint prevents further enamel loss and gives worn enamel a chance to remineralise.
Prescription Sensitivity Toothpaste & Fluoride Gel
High-fluoride prescription toothpaste (5000 ppm) or stannous fluoride gel used at home provides ongoing protection and remineralisation — more effective than over-the-counter sensitivity toothpastes.
Root Canal Treatment (Severe Cases)
When sensitivity is so severe that no topical treatment controls it and the pulp is involved, a root canal eliminates the nerve and permanently stops sensitivity.
In-Depth
What Every Patient Should Know
Tooth sensitivity is often dismissed as a minor inconvenience. But sensitivity is your teeth’s warning system — it tells you that the protective enamel or gum tissue is compromised, and without intervention, the problem usually progresses.
What does not work: Simply switching to a sensitivity toothpaste and hoping for the best. Sensitivity toothpastes can reduce pain perception, but they do not treat the underlying cause — enamel erosion, recession, or cracks. Without professional assessment, the root cause continues to progress.
The good news: Dentine hypersensitivity is one of the most straightforward conditions to treat in dentistry. In most cases, a combination of in-office treatment and the right home-care products produces dramatic relief within days to weeks.
At GardenCity Smiles, we perform a thorough sensitivity assessment — checking for recession, erosion patterns, cracks, and bruxism — before recommending a targeted treatment plan.
Prevention
How to Prevent This
Prevention is always better — and far less costly — than treatment. These evidence-based habits can significantly reduce your risk.
- Use a soft-bristled toothbrush and gentle circular strokes — never scrub side to side
- Use fluoride toothpaste with at least 1450 ppm fluoride
- Limit acidic drinks — cola, citrus juices, energy drinks — and wait 30 minutes before brushing after consuming them
- Drink acidic beverages through a straw to minimise contact with teeth
- Manage acid reflux (GERD) — stomach acid is highly erosive to enamel
- Wear a night guard if you grind or clench your teeth
- Visit the dentist every 6 months for early detection of recession or erosion
When to See a Dentist
Do not wait if you experience any of these — early intervention always leads to better outcomes and lower treatment cost.
- Sensitivity has appeared suddenly or is worsening
- Pain lasts longer than a few seconds after the trigger is removed
- You can see your gums pulling away from one or more teeth
- A specific tooth is very sensitive — could indicate a crack or deep decay
- Over-the-counter sensitivity products have not helped after 4 weeks
- A bad taste in the mouth that does not go away
faqs
Frequently Asked Questions
Answers from Dr. Deepthi Kalahasti and the GardenCity Smiles team.
Sensitivity toothpaste can reduce discomfort by temporarily blocking dentinal tubules or desensitising nerve endings, but it does not treat the underlying cause. If you have recession, erosion, cracks, or decay, you need professional treatment. Use sensitivity toothpaste alongside, not instead of, professional care.
Yes — temporary sensitivity after teeth whitening is very common and usually resolves within 24–72 hours. The whitening agent temporarily increases dentinal permeability. We use post-whitening fluoride treatment and recommend potassium nitrate gel to manage this.
Mild recession can be stabilised by eliminating the cause — improving brushing technique, treating gum disease, or managing grinding. However, once gum tissue is lost, it does not regrow on its own. A gum graft is required to restore the lost tissue and cover the exposed root.
Absolutely. A diet high in acidic foods and drinks (citrus fruits, carbonated beverages, pickles, wine) softens enamel through erosion. Brushing teeth while enamel is softened — within 30 minutes of acidic food — accelerates the loss. Reducing acid exposure is one of the most important changes you can make.
Most patients notice significant improvement after a single in-office fluoride varnish or bonding session. For underlying causes like recession or bruxism, 2–3 appointments may be needed. We create a personalised plan at your first visit.
Ready to Get the Right Treatment?
Book a consultation with Dr. Deepthi Kalahasti at GardenCity Smiles, Yelahanka. Walk in with a concern, leave with a clear personalised plan.
GardenCity Smiles, Yelahanka, Bangalore · Mon–Sat 9:30 AM–7:30 PM · Sun by appointment