Sensitive Teeth: Causes, Relief & Treatment

Sensitive teeth cause a sharp, short burst of pain when you eat or drink something hot, cold, sweet, or sour sometimes even from brushing. It's a common problem, and it's usually very treatable once the cause is identified. Ocotillo Trails Family Dentistry helps patients in San Tan Valley, Gilbert, and Mesa figure out why their teeth are sensitive and find real relief.

San Tan Valley (480) 457-1977
Gilbert (480) 963-9900
Mesa (480) 830-3344

What Causes Sensitive Teeth

Brushing too hard: Too much pressure or a hard-bristled toothbrush wears down enamel and can push gums back
Acidic foods and drinks: Citrus fruits, tomatoes, coffee, wine, and soda can gradually wear down enamel
Gum recession: Thinning or receding gums expose the sensitive root surface
Teeth grinding (bruxism): Grinding or clenching wears down enamel and can expose dentin
Cracked or chipped teeth: A crack can let irritants reach the inner tooth
Gum disease: Swollen or infected gums can expose tooth roots
Plaque buildup near the gumline
Teeth whitening products: Some can increase sensitivity temporarily
Recent dental work: Fillings, cleanings, or other treatments can cause short-term sensitivity that usually fades
A worn or damaged filling

A Few Specific Patterns Worth Knowing

The timing and location of sensitivity can offer useful clues about its cause.

Sudden Sensitivity

Sensitivity that appears out of nowhere is often linked to a specific, recent cause: a new crack, a cavity, recent whitening, or aggressive brushing rather than gradual wear. It’s worth having checked rather than waiting to see if it fades.

Sensitivity in One Tooth

Sensitivity in one specific tooth—rather than your whole mouth—including a single front tooth often points to something localized, such as a crack, a cavity, or a problem with a specific filling. It’s worth a targeted look from your dentist.

What You Can Do at Home

Try a desensitizing toothpaste. These work by blocking the tiny tubules in dentin from transmitting pain signals to the nerve, or by helping strengthen enamel. Look for potassium nitrate or stannous fluoride. Consistent daily use over a few weeks is usually needed for the full effect.
Switch to a soft-bristled toothbrush and use gentle strokes rather than scrubbing
Use a fluoride toothpaste and avoid abrasive or whitening toothpastes if they seem to make sensitivity worse
Limit acidic foods and drinks, and use a straw for acidic beverages to reduce contact with your teeth
Rinse with water after eating or drinking something acidic, rather than brushing right away
Ask about a mouth guard if you grind your teeth at night

What Happens If It's Left Untreated

Tooth sensitivity itself isn’t dangerous, but ignoring the underlying cause can allow it to get worse. Depending on the cause, untreated sensitivity can progress to an infected tooth, cavities, or worsening gum disease, so it’s worth having persistent sensitivity checked rather than just working around it.

When to See a Dentist

Make an appointment if your teeth hurt when you eat or drink something hot, cold, or sweet—especially if it’s a new symptom, gets worse, or is limited to one specific tooth. A dentist can pinpoint the actual cause rather than you guessing at home care alone.

Professional Treatment Options

If home care isn’t enough, a dentist has several options depending on the cause of your sensitivity.

Ways We Can Treat Sensitive Teeth

1. Fluoride Varnish

Fluoride varnish can be applied directly to sensitive areas to strengthen enamel.

2. Dental Bonding or Dentin Sealant

Bonding or a dentin sealant can cover exposed areas and block pain signals.

3. Root-Surface Protection

Dental adhesives or sealants may be placed over an exposed root surface.

4. Gum Graft

A gum graft may be recommended when significant gum recession has exposed the tooth root.

5. Treat the Underlying Cause

The direct treatment may be a filling for a cavity, gum disease treatment, repair of a damaged filling, or another solution based on the examination.

How We Treat Sensitive Teeth

Sensitive teeth almost always have a specific, findable cause, and identifying it is the first step to real relief—not just picking a product and hoping it helps. During an exam, we can determine whether your sensitivity is related to enamel wear, gum recession, a cavity, or something else, and recommend the right treatment. Our General & Preventive Dentistry team can also help you find a desensitizing routine that works for your specific cause.

Medically Reviewed Information

Medically reviewed by Dr. Matthew Roper, DDS. Last updated September 29, 2026.

Dr. Roper is a licensed general dentist who earned his Doctorate of Dental Medicine from A.T. Still University in Mesa.

This information is for educational purposes and does not replace a professional diagnosis.

Frequently Asked Questions

Why are my teeth suddenly sensitive?

Sudden sensitivity is often linked to a specific recent cause: a new cavity or crack, recent teeth whitening, or a change in brushing habits. It’s worth having checked rather than waiting to see if it resolves.

What toothpaste is good for sensitive teeth?

Look for a desensitizing toothpaste containing potassium nitrate or stannous fluoride, both well-established for blocking sensitivity signals. It typically takes a few weeks of consistent use to notice the full effect. Your dentist can recommend a specific option if over-the-counter versions aren’t helping.

Can sensitive teeth go away on their own?

Sometimes. Sensitivity after a dental procedure, for example, often fades within a few days to weeks. But ongoing sensitivity usually has an underlying cause that needs to be addressed rather than something that resolves by itself.

Is tooth sensitivity a sign of a cavity?

It can be, but it’s not the only possible cause. Sensitivity is also commonly caused by enamel wear, gum recession, or grinding. A dental exam is the most reliable way to know for sure.

Does teeth whitening cause sensitivity?

It can for some people, and it’s usually temporary. If whitening-related sensitivity is severe or doesn’t improve, let your dentist know; there are gentler options available.

Neighborhoods We Serve

Ocotillo Trails Family Dentistry is proud to welcome patients from San Tan Valley and the surrounding communities, including:

Driving Directions to Our San Tan Valley Dental Office

Visiting Ocotillo Trails Family Dentistry for sensitive teeth? Our office is at 40815 N Ironwood Rd #102, San Tan Valley, AZ 85140. Travel along N Ironwood Road toward E Ocotillo Road, enter the property, and continue to Suite 102.