This is a break-through, a paradigm shift, a most helpful addition to our knowledge base as dental professionals. We have known for years that fluoride helps to keep teeth strong, thus preventing decay. But this information takes that commitment to a deeper level. Better living through chemistry!
Cavities are areas on an otherwise healthy and fully functioning tooth that are depleted of the full compliment of minerals that allow a tooth to remain strong. The de-mineralized area may or may not be uncomfortable to you as you eat, drink, and speak. De-mineralization can be detected by a dental professional in a number of ways: visually, using tactile perception, with a light system called KaVo, or on radiographs.
Each tooth has four layers: the enamel, the dentin, the cementum, and the pulp chamber. The enamel is the outer layer that covers the portion of the tooth that shows in the mouth. It is the hardest substance in the body and has no nerve endings in it-thus it does not perceive stimulation from hot, cold, or biting pressure. It is an insulator.
The under-layer, the dentin, is filled with nerve endings in it and most definitely perceives changes in the environment. Hot, cold, sweets, and the pressure of biting are perceived by the tooth as discomfort. Something that would cause you to ring up a dentist for help.
Historically when a cavity remains within the enamel, the tooth can be fairly easily fully restored. But once the decay involves the under-layer, the dentin, it becomes a larger repair scenario. The enamel can be re-mineralized to some degree with the use of fluoride. Recent laboratory research suggests that decay extending into the dentin can also be re-mineralized.
This is a break-through, a paradigm shift, a most hopeful addition to our knowledge base as dental professionals. We have known for years that fluoride helps to keep teeth strong, thus preventing decay. But this information takes that commitment to a deeper level. Better living through chemistry!