What is the difference between neutrocclusion and normal occlusion? Class I is neutro but not normal. Why is not normal? It seems to have the normal cusp-groove relationship!!!!!!!!!!!!!!!!!!!!!!!!!!

Angle's class I definition only takes into consideration 1st molar relationship. You can have class I first molar alignment, but crowding in the anteriors, misaligned canines, etc. Normal occlusion refers to ideal.

Angle's class I definition only takes into consideration 1st molar relationship. You can have class I first molar alignment, but crowding in the anteriors, misaligned canines, etc. Normal occlusion refers to ideal.

Oh ok, thanks. I thought both 1st molars and canines are used for classification. I guess canines are used to confirm the molar relationships or to classify occlusion when a molar is missing

Angle's class I definition only takes into consideration 1st molar relationship. You can have class I first molar alignment, but crowding in the anteriors, misaligned canines, etc. Normal occlusion refers to ideal.

Normal is different from ideal. Normal occlusion might contain very minimal rotations, crowding, spacing, etc.... Ideal (perfect) occlusion is found in less than 5 per cent of the population.

Normal is different from ideal. Normal occlusion might contain very minimal rotations, crowding, spacing, etc.... Ideal (perfect) occlusion is found in less than 5 per cent of the population.


Correct.. normal occlusion is a physiological concept, while ideal occlusion is an anatomical concept