Class III is where the lower first molar is anterior (or more towards the front of the mouth) than the upper first molar. In this abnormal relationship, the lower teeth and jaw project further forward than the upper teeth and jaws. There is a concave appearance in profile with a prominent chin.
How do you fix a Class 3 bite?
- Maxillary Arch Advancement – This can be achieved by a variety of protraction mechanics, with the most common options being Class III elastics and reverse-pull headgear traction.
- Mandibular Arch Retraction – This may involve lower arch extractions and/or class III elastics.
What is a Class 3 underbite?
Class III. Underbite refers to a relationship in which the lower molars are anterior (towards the front) of the upper molars. It is called an underbite because, in this atypical relationship, the lower jaw and lower front teeth project further forward than the upper teeth and jaw. This creates a concave appearance.
