What Causes an Underbite — And Why to Treat It as Soon as Possible Few people are born with perfect teeth, and misalignments of the teeth and jaw can occur both at birth or during early childhood. Underbites, a type of malocclusion, are one form of misalignment many people face. Having an underbite can cause both physical and emotional challenges, but help is … [Read more...] about What Causes an Underbite — And Why to Treat It as Soon as Possible