Class 3 Malocclusion Treatment Options. The National Health and Nutrition Examination Survey reveals that a large percentage of the population has a malocclusion. That means that many people in the world have ill-positioned teeth. Malocclusion is the term for a skewed relationship between the positioning of the teeth with the jaw closed. Malocclusion has three levels or classes. Class 3 is the kind that involves the underbite. An underbite is present when the bottom row of teeth overlap the top row. When the class 3 malocclusion is severe, specialists refer to it as prognathism. It involves a problem with the lower jaw, or in some cases, teeth position. Anyone who is suffering from a class 3 malocclusion can get help from an experienced and skilled provider. This is some information about the treatment for the problem.