If a cavity, decay, or even a crack has managed to damage a large area of the tooth, you may need a crown or a cap. If the decay has managed to get to the nerve, you may end up needing a root canal to get rid of the dead pulp. When the dentist decides he can fill your tooth, he will remove the cavity then fill the hole with a material listed above. What you eat is a big contributor to cavities. If you eat a lot of sweets or drink a lot of soda, you will be at a higher risk for cavities. Foods that are rich in sugar or starch are eaten by bacteria found in plaque, which will produce acids that eat through teeth. This acid is very harmful to teeth, as it can eat through the dentin and enamel in no time at all. Pulp irritation is another cause of toothaches, as it occurs after dental treatment. No matter how well your filling or crown was done, the materials that were used to fix the tooth can end up causing pain later on down the road. There really is nothing you can do, as crowns can sometimes come off or the filling can sometimes come out. The more moderate fractures, normally include damage to the dentin, pulp, and even the enamel. These fractures can be nothing to worry about at times, yet painful with other cases. Providing the pulp hasn t been damaged, your dentist will be able to restore the full shape and function to the fractured tooth. If the fracture is large, you may need to have a crown placed on the tooth to prevent further fractures from occurring in that tooth. The second type of crack exceeds way below the gum line, and is known as an oblique subgingival fracture. Once the fractured piece of tooth breaks off, it normally remains attached to the gums and cause result in terrible pain until you get it removed. The fear of pain in dentistry is so high in fact, that many people fail to go to the dentist until their condition becomes so severe that they have no other choice than to see a dentist. A majority of individuals are terrified of the dental chair, although once they are numb, they sometimes fall asleep.