Johnson & Johnson CEO William Weldon (left) and Colleen Goggins, chairman of the company's consumer unit, (right) testify at a House Oversight and Government Reform Committee hearing Thursday. Mark Wilson/Getty Images hide caption

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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

itoggle caption Mike Ruocco/NPR