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.
To begin, a toothache that is really a toothache can be caused by a variety of reasons: â¢ Decay/Cavities: The classic toothache cause is a simple cavity. Bacteria gets where it shouldn't and viola, you have pain. The cure is usually a simple filling.