Sales of over-the-counter oral care products reached $4.9 million in 2012, up 2.2% from 2011 sales, according to Oral Care Products in the US, 8th Edition, a just-released study from market research firm Packaged Facts. In the oral care market, health concerns are the number one driver of sales, but other factors come into play as well. Consumers are also looking to whiten their teeth and freshen their breath.If a product can do all three, all the better: products that provide multiple benef...