Skip to main content

Family's Campus -Children aged 7 or above - Occlusion and irregular teeth - Occlusion

Please note that in-text links in this page will open a new window.

Occlusion

An occlusion is decided by the position of upper and lower teeth. In a normal occlusion, the lower front teeth should touch the inner surface of the upper front teeth. One-third of the outer surface of lower front teeth should be covered by the upper front teeth. The distance between the outer surface of lower front teeth and the inner surface of upper front teeth should be 2mm to 4mm.

Animation showing a normal bite.

If the upper teeth are projected more forward than the lower teeth, 'projected upper teeth' results.

Animation showing projected teeth.

However, if the lower teeth are projected more forward than the upper teeth, 'reversed bite' results.

Animation showing teeth with reversed bite.

Back to Top
Explanation of WCAG 2.0 Level Double-A Conformance