Your smile speaks volumes about you. We all want a big, beautiful, smile with brilliant white teeth, right?  It starts with the basics, frequent brushing. Those toothpaste commercials on TV always seem to show someone loading a toothbrush with lots of toothpaste. Experts say that's not the way to do it. According to Rally Health, you should only use an amount of toothpaste about the size of a pea. Kids under 6 should use even less. According to Dr. Steven Goldberg, DDS, FADFE, it's the bristles that do the work, so too much toothpaste is a waste. If you use an expensive brand, like Sensodyne, you're wasting money.