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Orthodontic Conditions

Malocclusion

"Malocclusion" is a general term that we use to describe a mismatch of tooth size, jaw size and the way that teeth fit together, one jaw with the other. In general terms there are a number of things that can contribute to a "malocclusion". Malocclusion is classed by the postion of the teeth (the relative position of the maxillary-upper first molar) and jaw relationship.

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Class I malocclusion

The jaw relationship is relatively normal but your teeth may be very crowded and unattractive.

The molar classification of a class I malocclusion is the mesiobuccal cusp of the upper first molar should align with the buccal groove of the lower first molar.

Click here to watch our video introduction on CI spacing

Click here to watch our video introduction on CI open bite

Click here to watch our video introduction on CI crowding

Click here to watch our video introduction on CI palatal crossbite

Click here to watch our video introduction on CI anterior tooth crossbite

 

Class II malocclusion

This is an overjet (commonly called an overbite). This is where a discrepancy lies between the upper and lower jaws (usually the lower jaw has not kept the same rate of growth as the upper jaw).

A class II malocclusion can be classified into two groups:

- Class II div I- The molar classification is the mesio buccalcusp of the upper first molar rests between the lower first molar and second premolar, and the anterior teeth are protruded.

 

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- Class II div II- The molar classification is the mesiobuccal cusp of the upper first molar rests between the lower first molar and second pre molar, and the cental incisors (front teeth) are retroclined (back) and the lateral incisors (two teeth either side of front teeth) are overlapping the central incisors.

 

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Click here to watch our video introduction on CII overbite

Click here to watch our video introduction on CII overjet

 

Class III malocclusion

An under-bite. This can be a result of the upper jaw not keeping the same rate of growth as the lower jaw and/or the lower jaw is growing forward in excess.

A Class III malocclusion can be classified by the mesiobuccal cusp of the upper first molar lies behind the lower mesiobuccal groove of the first molar, and the lower front teeth are more prominent than the upper front teeth.

 

 

Click here to watch our video introduction on CIII malocclusion with lip posture

Click here to watch our video introduction on CIII dental malocclusion

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