Key occlusion by angle and andrews

1. What are the keys of occlusion according to Andrew?
2. What is Angles key to occlusion?
3. What is key occlusion?
4. Who proposed the 6 keys to normal occlusion?

What are the keys of occlusion according to Andrew?

According to Andrew's occlusal concept: - The mesiobuccal cusp of the upper first molar should occlude in the groove between the mesial and medial buccal cusp of the lower first molar. - The mesiolingual cusp of the upper first molar should occlude in the central fossa of the lower 6- year molar.

What is Angles key to occlusion?

2. Angle's Classifications of Occlusion. ². In the early 1900s, Edward H. Angle classified occlusions using the relationship between the first molars of both arches as the key factor in determining occlusions.

What is key occlusion?

The Key to Occlusion has to do with how the Maxillary 1^stMolar and the Mandibular 1^stMolar come together. In ideal occlusion, the Mesio-Buccal cusp of the Maxillary 1^stMolar occludes in the Developmental Groove of the Mandibular 1^stMolar. This is known as Class I occlusion. However, not all occlusion is ideal.

Who proposed the 6 keys to normal occlusion?

Lawrence F. Andrews, D.D.S.

nonorthodontic patients with normal occlusion. These constants will be referred to as the "six keys to normal occlusion." The article will also discuss the importance of the six keys, individually and collectively, in successful orthodontic treatment.