Final answer:
Angle classification describes the occlusions or bite relationships, with three main types: Class I (normal), Class II (overbite), and Class III (underbite), used by orthodontists to assess and plan treatment for teeth alignment.
Step-by-step explanation:
The occlusions of Angle classification describe the relative positions of teeth and jaws, important in orthodontic diagnosis and treatment. There are three main types of occlusions in Angle classification: Class I, Class II, and Class III. Class I is considered normal occlusion where the upper teeth slightly overlap the lower teeth. Class II is characterized by the upper teeth excessively overlapping the lower teeth, often referred to as an overbite. Class III occlusion is the opposite, often called an underbite, where the lower teeth project further forward than the upper teeth. Each of these classifications indicates different dental relationships and guides the orthodontist in planning treatment. To assess occlusion, it is essential to examine the molars' positions, the anterior teeth's overlap, and check if the answer is reasonable, for instance, ensuring the angles of the jaw are not misinterpreted.