Gum recession
When gums pull back, the root surface is exposed. Roots have no enamel, so they are often the most sensitive spot in the mouth.
A short, sharp twinge from cold, sweet or a toothbrush usually means exposed dentine. It is common and treatable, once the cause behind it has been found and dealt with.
Bring the name of the toothpaste you use and any whitening products you have tried.
Most sensitive teeth are treated conservatively: a desensitising toothpaste used twice daily, fluoride varnish applied in the clinic, and changes to brushing and acidic food and drink. Exposed root surfaces can be sealed with bonding, and grinding is managed with a night guard. At Creative Arts in Dubai, decay, cracks and gum disease are ruled out first, because they need different treatment.
Under the enamel and the gum lies dentine, a layer filled with microscopic fluid-filled tubes that run towards the nerve. While enamel or gum covers it, you feel nothing. Once dentine is exposed, cold, sweet or acidic food, air and even a toothbrush move the fluid in those tubes, and the nerve registers a short, sharp pain.
The typical pattern is a twinge that starts the moment the trigger touches the tooth and fades within seconds once it is removed. It often affects several teeth, especially near the gum line. That pattern matters, because pain that lingers, throbs or comes on by itself is not ordinary sensitivity — it usually points to an inflamed nerve and belongs on our toothache page.
Sensitivity comes back unless the cause is addressed, so finding it is part of the treatment.
When gums pull back, the root surface is exposed. Roots have no enamel, so they are often the most sensitive spot in the mouth.
Frequent soft drinks, citrus, sports and energy drinks, vinegar dressings or acid reflux soften enamel and thin it over time.
A hard brush and a sawing action wear notches at the gum line and push gums back, particularly if you brush straight after something acidic.
Grinding wears biting surfaces flat and can flex enamel away at the neck of the tooth, exposing dentine from both directions.
Whitening often causes temporary sensitivity, and a new or deep filling can leave a tooth reactive for a few weeks while it settles.
Several conditions feel like sensitivity at first. The examination rules them out before desensitising treatment starts.
Most people need only the first two or three steps. More involved options are kept for sensitivity that does not respond or has a structural cause.
| Option | When it fits | What to expect |
|---|---|---|
| Desensitising toothpaste | First step for almost everyone with mild to moderate sensitivity | Works gradually over two to four weeks of twice-daily use and stops working if you stop using it |
| Fluoride varnish and desensitising agents | Sensitive areas that toothpaste alone has not settled | Painted on in the clinic in minutes; often repeated, as the effect wears off over weeks to months |
| Diet and brushing changes | Erosion or brushing wear is part of the cause | Soft brush, gentle technique, and waiting before brushing after acidic food; protects every other treatment |
| Bonding or a filling over exposed areas | Notches at the gum line, exposed roots or eroded areas that stay sensitive | Seals the dentine physically with tooth-coloured composite; may need repair over the years |
| Gum treatment | Recession linked to gum disease or plaque build-up | Stabilises the gums so recession does not progress; regular maintenance cleaning is needed |
| Night guard | Grinding or clenching is wearing the teeth | A custom guard worn at night protects the teeth from further wear; it does not stop the habit itself |
| Root canal treatment | Rarely: severe sensitivity in one tooth that does not respond to anything else, or a nerve that has become inflamed | A last resort for sensitivity alone; the examination confirms whether the nerve is genuinely the problem |
Sensitivity across many worn teeth may be part of a wider wear problem — see worn teeth.
Whitening gel opens the enamel's pores for a time, and sensitivity during or just after treatment is common and usually temporary, settling within a few days of stopping. Using a desensitising toothpaste for two weeks beforehand, spacing out home-whitening sessions and avoiding very cold drinks helps. Whitening is not started on teeth with untreated decay, cracks or exposed roots. Read more about teeth whitening.
These make professional treatment last longer, and on their own often settle mild sensitivity.
Use a soft or sensitive brush with small circular movements, and let an electric brush do the work without pressing.
After brushing with desensitising toothpaste, spit out the excess but do not rinse, so the active ingredient stays on the teeth.
Keep acidic drinks to mealtimes, use a straw for fizzy drinks, and wait about an hour before brushing after anything acidic.
Professional teeth cleaning removes the plaque that inflames gums and drives recession.
Dr. Duaa Ameen focuses on conservative and gum care; Dr. Julia and Dr. Marina Antoniuk examine individual teeth under the dental microscope when a crack or nerve problem needs ruling out.
Common triggers are a recent whitening treatment, a new filling, switching to a harder brush or whitening toothpaste, more acidic drinks, or a period of grinding under stress. Sudden sensitivity in one tooth only is different: it can signal decay, a crack or a leaking filling, so it is worth having that tooth examined.
Sensitivity after whitening or a new filling usually settles within days to weeks. Sensitivity from gum recession, erosion or brushing wear tends to persist or worsen unless the cause changes, although desensitising toothpaste and in-clinic varnish usually control it well.
It can be. Decay that reaches the dentine causes sensitivity to sweet and cold, usually in one tooth. Generalised sensitivity across several teeth near the gums is more often exposed dentine. An examination and X-rays tell the two apart.
Toothpastes labelled for sensitive teeth contain ingredients that either block the dentine tubes or calm the nerve's response. Most work after two to four weeks of twice-daily use. Avoid highly abrasive whitening pastes if your teeth are sensitive, and do not rinse straight after brushing.
Often the sensitivity can be controlled long term rather than cured outright. Sealing exposed areas with bonding, treating the gums and managing grinding and acid give lasting results, but if the cause continues, sensitivity can return and the treatment may need repeating.
Usually yes, once the cause has been checked and any decay or exposed roots have been treated. Your dentist may suggest a desensitising toothpaste beforehand, a gentler home-whitening routine and breaks between sessions. Whitening sensitivity is usually temporary.
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