Why Does a Fractured or Broken Tooth Cause Pain?
A fractured or broken tooth may or may not hurt, but even if it doesn't, you'll likely feel a change with your tongue, which has a sensitivity that gives things a "magnifying effect," making them feel larger than they are. This helps you notice any unwanted items in your food, like a fishbone, a piece of dirt, or a hair – and in this case, can help you identify dental issues.
A minor tooth fracture is less likely to cause pain, but a large tooth break will likely hurt. The tooth's nerve may be damaged or exposed to air or hot or cold foods or drinks. The pain may be constant or come and go. Many people feel pain when chewing because it puts more pressure on your tooth, which transfers to your nerves.