What Causes Tooth Sensitivity? A Preston Dentist Explains
What Is Tooth Sensitivity?
Sensitivity occurs when the inner layer of the tooth — known as dentine — becomes exposed. Dentine contains microscopic tubules that connect directly to the nerve inside the tooth.
When exposed, temperature changes or certain foods stimulate these tubules, triggering pain.
The key question is: why has dentine become exposed?
Common Causes of Tooth Sensitivity
1. Enamel Wear
Enamel is the protective outer layer of the tooth. Over time, it can wear down due to:
- Aggressive brushing
- Hard-bristled toothbrushes
- Acidic diets
- Frequent fizzy drink consumption
- Acid reflux
Once enamel thins, dentine becomes more vulnerable.
2. Gum Recession
When gums recede, the root surface becomes exposed. Root surfaces are not covered by enamel, making them naturally more sensitive.
Gum recession may result from:
- Gum disease
- Brushing too hard
- Ageing
- Smoking
Patients across Fulwood and Penwortham often notice increased sensitivity alongside visible gum changes.
3. Teeth Grinding (Bruxism)
Grinding places repeated pressure on enamel, gradually wearing it down.
Signs of grinding include:
- Jaw tension
- Morning headaches
- Flattened tooth edges
- Tooth sensitivity
Night guards may be recommended to protect enamel.
4. Tooth Decay
Early cavities can cause localised sensitivity, particularly to sweets or cold drinks.
Unlike generalised sensitivity, decay-related discomfort often affects one specific tooth.
5. Cracked Teeth
Small cracks can allow temperature changes to reach inner tooth structures.
These cracks may not always be visible but can cause sharp discomfort.
When Sensitivity Indicates Something More Serious
Persistent or worsening sensitivity may signal:
- Advanced decay
- Infection
- Failing fillings
- Gum disease progression
Professional assessment ensures the correct diagnosis.
How Is Sensitivity Treated?
Treatment depends entirely on the cause.
Possible management options include:
Desensitising Toothpaste
Blocks dentine tubules and reduces nerve stimulation.
Fluoride Applications
Strengthen enamel and reduce sensitivity.
Gum Treatment
If gum disease is contributing, professional cleaning may resolve inflammation.
Restorative Treatment
Fillings or crowns may be needed if decay or cracks are present.
Night Guards
Protect teeth from grinding damage.
Early diagnosis makes treatment simpler and more predictable.
Preventing Tooth Sensitivity
To reduce risk:
- Use a soft-bristled toothbrush
- Avoid aggressive brushing
- Limit acidic foods and drinks
- Address grinding early
- Attend regular dental reviews
Small changes can make a significant difference.
Final Thoughts
Tooth sensitivity is common — but it is not something to ignore.
For Preston patients, early assessment prevents small issues from progressing into larger problems. Identifying the cause ensures the right solution.
Persistent discomfort deserves professional advice.
FAQs
Is tooth sensitivity permanent?
Often not — many cases are manageable with treatment.
Should I change toothpaste?
Desensitising toothpaste can help, but diagnosis is important.
When should I book?
If sensitivity persists beyond a few days.
Can grinding cause sensitivity?
Yes, enamel wear from grinding is a common cause.
