Term paper. A term paper is a research paper written by students over an academic term, accounting for a large part of a grade. Term papers are generally intended to describe an event, a concept, or argue a point.
Figure 1. Crown of the tooth. The teeth are made up of two major parts: the crown and the root. The crown of the tooth is what is visible in the mouth (Figure 1). The root of the tooth is the portion which normally not visible in the mouth and is anchored within the bone (Figure 2).
Tartar, also called dental calculus, is a yellow or brown colored deposit that forms when plaque hardens on your teeth. Because tartar buildup on teeth is strongly bonded to the tooth enamel, it can only be removed by a dental professional. You have a greater risk of developing tartar with braces, dry mouth, crowded teeth, smoking and aging.