What is a Class 1 molar?

(1) Class I (Class I molar relationship): The mesiobuccal cusp of the upper first molar is in occlusion with the mesiobuccal groove of the lower first molar (Figure 1A). Figure 1. Guidelines used for classifying molar relationships from the buccal aspect.

What is a Class 1 malocclusion?

Dental malocclusions are classified based on the positioning of the upper and lower molars. A class 1 malocclusion means that the molar position, or bite, is normal, but there are other teeth that are misaligned in some way. These anomalies can include: Overlapping or overcrowded teeth. Rotated teeth.

Is Class 1 occlusion normal?

Class I is a normal relationship between teeth, jaw and jaw. This is the correct occlusion, and it gives the person a well-balanced profile in the anteroposterior plane.

What is a Class 1 canine?

CANINE CLASSIFICATION • CLASS I : When the mesial slope of upper canine coincides with the distal slope of lower canine. 32. CANINE CLASSIFICATION • CLASS II : When the mesial slope of upper canine is ahead of the distal slope of lower canine.

What is a Class II molar relationship?

Class I malocclusion: A normal molar relationship is present, but there is crowding, misalignment of the teeth, rotations, cross-bites, and other alignment irregularities. Class II malocclusion: The mesiobuccal cusp of the maxillary first molar occludes anterior to the buccal groove of the mandibular first molar.

What is a Class 1 incisor relationship?

Class 1: Class I is a normal relationship between the upper teeth, lower teeth and jaws or balanced bite. Normal. Crowding. Spacing.

What does class 2 teeth mean?

Class II: Class II is where the lower first molar is posterior (or more towards the back of the mouth) than the upper first molar. In this abnormal relationship, the upper front teeth and jaw project further forward than the lower teeth and jaw.

What is a Class 3 jaw?

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.