State Route 520 Bridge: Also known as the Evergreen Point Bridge, it is the longest floating span in the world. It also produced some of Seattle area's longest traffic jams until the state began tolling the bridge again for the first time in 30 years last December.
Tooth decay is damage that occurs when germs (bacteria) in your mouth make acids that eat away at a tooth. It can lead to a hole in the tooth, called a cavity. If not treated, tooth decay can cause pain, infection, and tooth loss. A tooth has three layers. The hard outer layer is called enamel.
When a tooth is exposed to acid frequently -- for example, if you eat or drink often, especially foods or drinks containing sugar and starches -- the repeated cycles of acid attacks cause the enamel to continue to lose minerals. A white spot may appear where minerals have been lost.This is a sign of early decay.sed with permission. Tooth decay is the result of an infection with certain types of bacteria that use sugars in food to make acids. Over time, these acids can make a cavity in the tooth.