"Teeth were either knocked out, chipped, pushed back up into the gums or knocked sideways," says Sarah Keim, lead study author and a researcher at the Center for Biobehavioral Health at The Research Institute at Nationwide Children's Hospital in Columbus, Ohio.
The study also found that one-year-old children were injured the most often.
Dr. Garry Gardner is a pediatrician in Chicago and chairs the Injury, Violence and Poison Control committee for the American Academy of Pediatrics. He's not surprised by the results of this study, especially that the majority of children injured were about 1-year-old.
"They toddle along and they're not very coordinated and it's amazing to see these kids trip over nothing - and they do it all the time."
If there's anything in a child's mouth, he says, it's going to cause an injury to the mouth or hurt a tooth.
Image: Child walking with pacifier, via Shutterstock.