Did you know that about 90% of school-aged children have some form of tooth misalignment? This statistic from Boston Children's Hospital may come as both a surprise and a relief if you're currently trying to figure out what to do about your child's underbite. You are not alone! An underbite is a common form of misalignment caused by several factors, some in your control, some not. Let's go over the potential causes, symptoms, and remedies to your child's underbite, so you can make some informed and confident decisions about what to do next!