What Is Deep Bite?
Deep bite is defined as a form of malocclusion in which the upper row of front teeth overlaps the bottom front teeth when the mouth is closed. This orthodontic concern is sometimes referred to as a closed bite or overbite. In some cases, a deep bite can affect a person’s ability to speak, breathe, and chew properly. It can also change the shape of a person’s face, causing it to appear rounder, shorter, or older in appearance.
If your upper front teeth come down too far over your bottom front teeth when you close your jaw, that’s considered a dental misalignment.
Your front bottom teeth showing a few millimeters or more is normal, but if your top teeth overlap your bottom teeth more than 4 mm, this could be considered a deep bite.