Rachel Bateman, 9, has braces to correct an overbite. Her orthodontist opted not to use expanders to expand her upper arch. Mike Ruocco/NPR hide caption

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Using the Icon treatment, Dr. Jin-Ho Phark won't need to drill to fill a cavity. Gretchen Cuda for NPR hide caption

toggle caption Gretchen Cuda for NPR

European regulators have decided to take Avandia off the market. FDA will allow further sales, with heavy restrictions. Justin Sullivan/Getty Images hide caption

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