Severe Toothache or Sudden Sensitivity: What It May Mean for Los Altos Patients

Tooth pain is hard to ignore and harder to interpret. A sharp twinge from iced water, a throb that keeps you awake, an ache that only appears when you bite: each of these points in a different direction, and each carries a different level of urgency. This guide is for patients in Los Altos who want to understand what their symptoms may be signalling and how quickly to act. It is not a diagnosis, but it can help you describe what is happening and decide whether to call today.

First, the symptoms that cannot wait

Go to an emergency room, or call 911, if tooth pain comes with any of the following:

• Swelling that is spreading toward the eye, down the neck or under the tongue.
• Difficulty breathing or swallowing.
• Fever with facial swelling and a general sense of being unwell.

These can indicate a spreading infection, which needs medical care before dental treatment.

Reading the pattern of pain

A brief zing from cold, sweet or acidic food, across several teeth

This is the classic pattern of exposed dentin. Beneath enamel lies dentin, a layer threaded with tiny channels that lead toward the nerve. When enamel wears thin or gums recede, those channels are exposed and temperature changes reach the nerve quickly. The pain is sharp but fades within seconds once the trigger is gone. Common causes include brushing too hard, frequent acidic drinks, gum recession and grinding. This is usually not urgent, but it is worth mentioning at your next visit.

Sensitivity to cold that lingers

If the ache from a cold drink continues for more than about thirty seconds after the cold is gone, the nerve inside the tooth may be inflamed. That can follow deep decay, a crack or a large older filling. Call us within a day or two.

Sharp pain in one tooth when you bite or release

A jolt of pain on chewing, especially as you let go, often suggests a cracked tooth. Cracks can be invisible in the mirror. Avoid chewing on that side and book a visit soon, since a crack can deepen.

Pain that starts on its own or wakes you at night

Spontaneous, throbbing pain, particularly when lying down, usually means the nerve is under real strain. This deserves a same-day or next-day call.

A tooth tender to touch, with swelling or a pimple on the gum

These signs point toward infection at the root or in the gum. Call us promptly, and see the emergency advice above if swelling is spreading.

Sensitivity after recent dental work

A new filling, crown or whitening treatment can leave teeth sensitive for a few days to a couple of weeks. If it is steadily improving, it is usually part of normal settling. If it is getting worse, or the bite feels high, let us know.

What you can do in the meantime

• Take an over-the-counter pain reliever as directed on the packet, if it is suitable for you.
• Do not place aspirin against the gum. It can burn the tissue.
• Rinse with warm salt water and floss gently around the sore tooth in case food is trapped.
• Avoid very hot, cold, sweet or hard foods on that side.
• Use a cold compress on the cheek for swelling, and sleep with your head slightly raised.

For general sensitivity that does not fit the urgent patterns above, a desensitising toothpaste containing potassium nitrate, stannous fluoride or arginine, used twice daily for several weeks, often helps. The effect builds gradually. Switching to a soft brush and waiting a while after acidic food or drink before brushing also make a difference.

Why antibiotics are not the whole answer

If there is infection, antibiotics can help control it, but they do not remove the cause inside the tooth. Pain that fades on antibiotics often returns unless the tooth itself is treated. Our dental emergency triage guide explains this in more detail.

What happens when you come in

We start by listening to how the pain behaves, then test the tooth with cold, gentle tapping and biting, and take X-rays where needed. That usually narrows the cause quickly. Depending on what we find, treatment might be:

• A fluoride varnish or bonding over exposed root surfaces for simple sensitivity.
• A filling for decay, or a crown to hold a cracked tooth together. Our same-day crowns can often finish this in one visit.
• Root canal treatment when the nerve is inflamed or infected. If that phrase worries you, our article on root canal myths is a reassuring read, and our endodontics page explains the procedure.
• A night guard if grinding is behind the wear.
• Gum care when recession is exposing root surfaces; see our guide to gum recession.

Calling us

If you are unsure whether your symptoms are urgent, call and describe them. We keep time for emergency visits at our Mountain View studio, which is close to Los Altos via El Camino Real, San Antonio Road or Foothill Expressway. The number is (650) 917-8348.