upper jaw

Mouth's fixed arch

The upper jaw is the top part of the mouth structure, containing the upper teeth and forming the roof of the oral cavity.

In humans, it's fixed to the skull, while the lower jaw moves.

The dentist examined her upper jaw for signs of decay.

Anatomically called the maxilla.

anatomy

maxilla

Upper jaw bone

maxillaryOf the upper jaw
palateOral cavity ceiling
alveolarOf tooth sockets

palatine · incisive · sinus · infraorbital · nasal · orbit · cranium · skull · bone · suture

dental

incisors

Front cutting teeth

caninesDog family members
premolarsTeeth with two cusps
molarsRear crushing teeth

teeth · dentition · occlusion · orthodontics · overbite · overjet · bite · alignment · braces · retainer

function

chewing

Crushing food orally

bitingHarshly critical or cold
masticationTeeth-based food breakdown
grindingMolar action sometimes

crunching · gnawing · nibbling · clamping · snapping · speech · articulation · breathing · swallowing · bite force

expression

smile

Pleased facial expression

grinBroad, toothy smile
grimaceTwisted expression of displeasure
snarlHostile vocal threat

sneer · frown · pout · baring teeth · lip curl · toothy grin

Categories

upper jawmaxilla, hard palate, tooth socket, tooth sockets, infraorbital foramen
skull anatomyskull, cranium, frontal bone, braincase, mandible
facial bonesmaxilla, mandible, nasal bone, vomer, cheekbone
jaw anatomymandible, maxilla, jawbone, ramus, condyle
mouthtongue, teeth, lips, gums, palate
skull partsfrontal bone, skull cap, coronal suture, lambdoid suture, fontanelle

Opposites

vertical anatomical position

upper jawlower jaw

Skull's hinged bottom bone

mandible · jawbone

Family

jaw, upper, jaws, uppermost, uppers

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