Dental decay begins as a small area on the outer shell of the tooth. Though enamel is the hardest substance in the human body, when harmful bacteria form enamel-dissolving acids, a cavity is created. Under the enamel is the dentin, which is somewhat softer than enamel. Decay spreads easier through this layer, and if it is not removed, it will continue until it rem aches the nerve center of the tooth.m Once the nerve has been attacked, the tooth begins to die as infection compromises the nerves and blood vessels. This leads to swelling and pain. It can also produce an abscess. As the infection continues, the bone around the apex of the tooth begins to dissolve. Left untreated, toxins from the infection could enter the bloodstream, causing a serious medical condition. Root canal therapy can prevent this from happening and save a tooth that may otherwise need to be extracted.#bestdentistnearme #bestspringvilledentist #bestutahvalleydentist http://jozu.me/1i7