According to data published in 2009, over 54% of Americans drink coffee regularly. A variety of foods and drinks can lead to a less than white smile, but coffee and tobacco tend to top the list of tooth enamel staining culprits. Recently, researchers evaluated the power of widely available tooth bleaching products and stain removal toothpastes against coffee and tobacco discoloration and further examined the susceptibility of the tooth enamel to such factors over time. The study finds, coffee is actually more of a staining threat than tobacco. Because many people enjoy coffee drinks daily.