1. Persistent Toothache and Pain
A toothache or severe pain often signals a developing cavity, especially when the damaged tooth comes into contact with something else. Sometimes you have a sharp, acute pain or it may be a dull, throbbing pain, and both are signs of a cavity.
2. Pain When Chewing Food
If you feel a sharp, sudden pain after biting into some food, the nerve in your tooth might be infected and in the process of decay. Touching the afflicted area can help you gauge the severity of your pain and whether or not you need to go and see a dentist.
3. Bad Breath or a Bad Taste in Your Mouth
Bacteria can cause odor and leave a bad taste in your mouth. Bad breath can also be a sign of gum disease, caused by a build-up of plaque on the teeth that irritates the gums.
4. Increased Sensitivity to Temperature
Every tooth has a nerve inside it, and it also has blood supply to help the tooth grow and function. When a cavity gets larger and closer to that nerve, it can sense the change in temperature easier
5. Bleeding When Brushing
Cavities can cause bleeding when brushing due to gum irritation from the damaged nerve. Recurrent bleeding might be a sign of a gum disorder or a symptom of a deep cavity
6. Pain Due to Changes in Pressure
Changes in air pressure can irritate the nerve within an infected tooth, causing dull or severe pain. If you feel an unfamiliar pain in these types of situations, have a dentist examine the tooth to catch the cavity before it grows.