underbite

Lower jaw protrusion

An underbite is a dental condition where the lower teeth extend beyond the upper teeth when the jaw is closed, the opposite of the more common overbite.

The term applies to both humans and animals—bulldogs and pugs are bred to have pronounced underbites.

The orthodontist recommended braces to correct her underbite.

anatomy

mandible

Lower facial bone

incisors · teeth · chin · profile · occlusion · protrusion · skeletal · condyle · ramus · symphysis

malocclusion

crossbite

Lateral jaw misalignment

  • overjetForward upper tooth projection
  • crowdingExcessive gathering in limited space
  • spacingInterval arrangement between objects

misalignment · asymmetry · discrepancy · deviation

aesthetic

profile

Side-facing outline

proportion · bulldog · jutting

orthodontic

braces

Dental alignment devices

correction · appliance · expander · alignment · adjustment · headgear · rubber bands · splint · mouthguard

appearance

profile

Side-facing outline

self-consciousness · confidence · smile · expression

causes

genetics

Science of hereditary transmission

Categories
Opposites
jaw alignment direction

underbiteoverbite

Excessive incisor overlap

overjet · retrognathia · buck teeth

Family

underbites

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G