An ideal bite has an overjet of 1-3 mm and an overbite of 1-3 mm and all of the back teeth mesh together properly. Ideal tooth positioning enables proper dental function and esthetics
Overjet: is the amount of horizontal overlap between upper and lower front teeth.
Overbite: is the amount of vertical overlap between upper and lower front teeth.
Class I (ideal bite):
An ideal bite has an overjet of 1 – 3 mm and an overbite of 1 – 3mm and all of the back teeth mesh together properly. Ideal tooth positioning enables proper dental function and esthetics
Class II (excess overjet):
When the upper jaw and teeth sit too far ahead of the lower jaw and teeth causing an excessive horizontal overlap (overjet)
Class III ( underbite):
When the lower jaw and teeth sit further ahead than the upper jaw and teeth causing the upper teeth to sit behind the lower teeth.
Deep Bite:
An excessive vertical overlap of greater than 3 mm. In some cases the lower front teeth contact the roof of the mouth.
Open Bite:
An oral condition that occurs when certain teeth, usually your front teeth, do not make contact with each other. An open bite gives the illusion that a person's mouth is never really closed.
Crossbite:
When any tooth (a single or all) in the upper jaw, bite to the inside of any tooth in the lower jaw.
Crowding:
When there is not enough room on the upper or lower jaw or both to accommodate all of the teeth, causing adult teeth to erupt out of position.