Underbite
An underbite is when the lower teeth sit in front of the upper teeth. Some underbites are mild, while others affect bite function and wear.
An underbite happens when the lower front teeth are ahead of the upper front teeth when you bite together. Orthodontic treatment can often improve it, but the best approach depends on whether it’s mainly tooth position or jaw relationship.
What an underbite looks like
With an underbite, the lower teeth bite in front of the upper teeth. People may notice the lower jaw looks more prominent, or that biting and chewing doesn’t feel quite “locked in”.
Why it happens
Jaw relationship: the lower jaw sits forward compared to the upper jaw.
Tooth position: upper teeth tipped back or lower teeth tipped forward.
Growth patterns: can develop in childhood and remain in adulthood.
Compensation: teeth can shift to “fit” the bite over time.
What typically helps
Treatment depends on severity and whether the jaw relationship is the main driver. Many mild-to-moderate underbites can be improved with braces or aligners that guide tooth position and bite contact.
When an underbite needs attention
Underbites can contribute to uneven tooth wear, gum strain, and bite discomfort. If you’re seeing chipping, difficulty biting through foods, or the bite feels “off”, it’s worth getting guidance.
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