Why Do My Bottom Teeth Hurt? Common Dental Causes Explained

Why Do My Bottom Teeth Hurt? Common Dental Causes Explained

December 1, 2025

It’s not unusual to wonder, why do my bottom teeth hurt? Pain in your lower teeth can range from mild sensitivity to sharp, throbbing aches that interfere with eating or even talking. Sometimes the cause is simple, like food stuck between teeth. Other times, the pain points to something more serious. Whether it’s tooth decay, gum issues, or an underlying health concern, getting the right care early can prevent bigger problems later. If treatment is needed, options such as composite fillings in Calgary, AB can help restore your teeth and ease the discomfort.

Understanding Tooth Pain

Tooth pain is your body’s way of signalling that something isn’t right. While some discomfort might fade with better brushing or flossing, persistent or severe pain should never be ignored.

Common signs that mean your bottom teeth need attention include:

  • Sensitivity when eating hot, cold, or sweet foods
  • Pain while chewing or biting
  • Swelling in the gums around lower teeth
  • A dull ache that lingers, even when resting
  • Sharp jolts of pain that come and go

Bottom tooth pain can be caused by dental issues, jaw problems, or even sinus pressure. The key is identifying the source.

Tooth Decay and Cavities

One of the most frequent reasons for bottom tooth pain is tooth decay. Cavities form when bacteria break down enamel, creating holes that expose sensitive layers beneath.

You may notice:

  • A clearly visible dark spot or hole in the tooth
  • Sensitivity to sweets, heat, or cold
  • Pain when chewing

In these cases, a dentist may recommend a filling. Many patients choose tooth-colored options like composite fillings in Calgary, AB, which blend in naturally and restore strength. Left untreated, cavities can deepen, leading to infections or even tooth loss.

Gum Problems That Cause Pain

Sometimes the discomfort comes from the gums rather than the teeth themselves. Gum disease and gingivitis often start with mild bleeding when brushing, but as it progresses, pain and swelling increase.

Warning signs of gum issues include:

  • Tender or swollen gums
  • Receding gumline exposing the roots of teeth
  • Bad breath that doesn’t go away
  • Pain around multiple lower teeth

Since gums support your teeth, addressing these problems quickly protects both comfort and oral health.

Cracks, Chips, or Worn Teeth

Even small cracks in teeth can cause big pain. You might not see the damage, but biting down on something really hard or grinding teeth at night can leave micro-fractures. These allow bacteria and temperature changes to irritate the inner layers.

Crowns, bonding, or other restorative treatments are often used to mend cracked or chipped teeth and prevent further problems.

Non-Dental Causes of Lower Tooth Pain

Not all tooth pain comes from your teeth. In fact, some causes may surprise you:

  • Sinus infections: Pressure from clogged sinuses can radiate to your bottom teeth.
  • Jaw clenching or grinding (bruxism): This habit often leads to sore, sensitive teeth.
  • Injury or trauma: A fall or impact can bruise the roots of lower teeth.
  • Nerve issues: Pain from the jaw or nerves in the face can sometimes feel like toothache.

If your teeth hurt but your dentist finds no decay or gum disease, these other factors might be the culprit.

When to Go to a Dentist for Bottom Tooth Pain

Tooth pain is never something to brush off. It’s important to know when to seek help. Make an appointment with a dentist in Calgary if you notice:

  • Pain that lasts more than a day or two
  • Swelling in your face or jaw
  • Fever along with toothache
  • A broken tooth or filling
  • Difficulty chewing or opening your mouth

Ignoring these symptoms could allow a small problem to grow into a dental emergency.

Quick Home Remedies Before Your Appointment

While waiting to see your dentist, you can ease pain with simple steps:

  • Rinse with warm saltwater to decrease swelling
  • Use a cold compress on your cheek for 10–15 minutes
  • Take over-the-counter pain relief as directed
  • Avoid very hot, cold, or sweet foods that trigger sensitivity
  • Keep the area clean using gentle brushing and flossing

These measures don’t replace treatment but can make you more comfortable in the meantime.

Short List: Everyday Habits to Prevent Tooth Pain

  • Brush twice a day with fluoride toothpaste
  • Floss daily to remove food and plaque
  • Stay hydrated to keep your mouth moist
  • Limit sugary drinks and snacks
  • Wear a nightguard if you frequently grind your teeth
  • Visit your dentist near me for regular checkups and cleanings

These habits are simple but powerful in preventing the issues that lead to painful bottom teeth.

Final Thoughts

If you’ve been asking yourself, “why do my bottom teeth hurt?”, the answer may lie in anything from a small cavity to a sinus infection. Paying attention to your symptoms and seeking help quickly makes all the difference. With today’s advanced treatments, from fillings to crowns, your smile and comfort can be restored. For trusted care and compassionate support, East Hills Dental Clinic is here to help you find relief and keep your teeth healthy for years to come.

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