A great smile doesn't just make you more attractive to others — research suggests turning that frown upside down is actually great for your overall health too. Smiling and laughing have been shown to have a huge number of positive benefits for both your mental and physical health. But, unfortunately, many of us aren't quite happy with our smiles. You may be self-conscious about broken, missing, crooked or discoloured teeth, gum disease or a gummy smile. If that sounds like you, read on to f...
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