A tooth with an occult fracture usually does not heal on its own. Unlike bones, which are both made of calcium, fractures tend to heal on their own, while teeth do not. Bone contains bone marrow, which makes red and white blood cells, and healing occurs through the blood supply from the arteries that connect the periosteum to the bone marrow. Teeth have pulp, which contains nerves, arteries, and veins, but not red or white blood cells that can repair themselves. In addition, most bone is encased in periosteum, which contains osteoblasts that promote regeneration and healing of damaged bone. The surface of the tooth, on the other hand, is enamel, which has no such ability. If the enamel is simply cracked, it can be treated with a layer of bonded composite resin. If the crack is deeper and reaches the dentin layer, the tooth needs to be filled or capped and pacified. If the fissure reaches the nerve, root canal treatment is required. It is recommended to avoid chewing on hard foods, including nut shells, beer caps, etc., and pay attention to oral hygiene.