Which classification is the Angle's classification of malocclusion based upon?

Angle's classification of malocclusion is a system that categorizes the alignment and relationship of the teeth, primarily focusing on the occlusion of the first molars as a key reference point. This classification uses the occlusion of the maxillary first molar in relation to the mandibular first molar to define different classes of malocclusion.

In this system, the position of the first molars establishes a standard method for assessing the overall dental occlusion. For example, if the maxillary first molar is positioned more towards the back of the mouth compared to the mandibular first molar, it may indicate a Class II malocclusion. Conversely, if the maxillary molar is further forward, it typically indicates a Class III malocclusion.

This foundational approach allows clinicians to identify and categorize malocclusions effectively. By focusing on the relationship between these specific teeth, Angle’s classification provides a practical and widely accepted framework for diagnosing and planning orthodontic treatment.