Class I: Normal Occlusion - Teeth alignment without overjet, considered ideal.
Class II: Malocclusion - Deep overjet, lower teeth positioned behind upper.
Class III: Underbite - Lower teeth positioned behind upper teeth, forming an underbite.
Key Terms:
Occlusion: Alignment of upper and lower teeth when jaws are closed.
Occlusal: Relating to the biting surfaces of teeth.
Class: Classification system for dental alignment.
Bite: The way upper and lower teeth come together.
Mount: Positioning of dental models or casts for examination or treatment planning.
Class I: Normal Occlusion
Considered ideal, teeth align properly without overjet or significant misalignment.
Class II: Malocclusion
Characterized by a deep overjet, where the lower teeth are positioned behind the upper teeth, often leading to issues with bite function and aesthetics.
Class III: Underbite
In this type of malocclusion, the lower teeth are positioned further forward than the upper teeth, resulting in an underbite appearance.