1. Sensitive teeth

Having sensitive teeth can be the reason you often experience pain in the teeth. Usually, people who have sensitive teeth will feel sharp pain every time you eat or drink something hot or cold. Sensitive teeth can be caused by gum recession (gum lines recede causing the root surface of the teeth to open) or thinning of the tooth enamel. In addition, dental care such as removing rotten teeth, inserting braces or dentures, can also cause your teeth to become sensitive.
2. Youngest teeth are growing

In many cases, wisdom teeth that are growing will usually make your teeth hurt. Wisdom teeth often grow in unwanted positions or crammed into places that are too crowded, which can cause throbbing pain accompanied by sudden sharp pain attacks.
3. Gum disease

People who have gum disease are very susceptible to toothache. Gum disease occurs because of the accumulation of dental plaque around the gums. This makes your gums inflamed. Inflammation caused by bacteria in plaque can be painful because it causes your gums to swell, red, and bleed. If this condition continues, you will experience gingivitis.

When you have gingivitis, you run the risk of developing more serious gum disease and will increase your chances of experiencing repeated tooth pain.
4. Dental caries

Dental caries, aka rotten teeth, is another cause you often experience pain in the teeth. Small cavities in the outer layer of the tooth (enamel) are usually painless, but once decay redeems through tooth enamel and affects the layer of the inside of the tooth (dentin), the teeth will become very sensitive. If left unchecked, this condition then leads to the formation of cavities.