We all have our vices: some of us smoke or enjoy more than occasional coffee or red wine. We end up with less-than-perfect smiles as a result, with our teeth becoming stained over time. Since its the 21st century, though, bleaching our teeth is an option to reverse the effects of our lifestyles. Many people are concerned about the negative effects of teeth whitening, with stories of burning, sensitivity and pain being common in conversations about the procedure. Unfortunately