Tooth cracks can occur when your tooth is damaged by a hard fall, biting on something hard, or gradually over time due to tooth decay. If the crack is only in the enamel (the hard outer layer of your tooth), it may not need to be treated. However, if the crack extends into the second layer of your tooth (dentin), you will likely need to have it repaired. It is important to reach out to a dentist at a professional, experienced office like WestLake Dental Care as soon as possible, as a cracked tooth that is left untreated can lead to further damage, infection, and even tooth loss.