Bread-and-butter restorative dentistry, for the most part, involves two things: fillings and crowns. There are about 75 composite fillings on the market today, all of which tout themselves as the best. Imagine, the chemical engineers in each of these various dental restorative companies concocting newer and more sophisticated ways to make their composites as superior as possible. Much of the same can be said of scanners, burs, cements, crown materials, isolation techniques, etc. Dr. Ankur Gupta.