In 1981, Reagan persuaded Congress to reduce the top tax rate form 70% to 50% and to index tax brackets (so that inflation was taken into consideration). In 1986, the Tax Reform Act reduced the rate on the wealthiest Americans to 28%.
Causes. Cavities are caused by tooth decay â a process that occurs over time. Here's how tooth decay develops: 1  Plaque forms. 2  Your mouth naturally contains many types of bacteria. 3  Some thrive on food and drinks that contain certain forms of sugar.
Dental caries (cavities) Dental cavities are tiny holes in teeth and can aching pain in the tooth and jaw. Labyrinthitis Labyrinthitis, an infection and swelling in the inner ear, and may cause vertigo or hearing loss.