Dental Science 1 - Dentition & Dental Arches

Vocabulary flashcards covering dentition, types and functions of teeth, tooth surfaces, tooth numbering, quadrants, and sextants from Week 1 Dental Science 1 lecture notes.

Dentition

The arrangement or condition of the teeth in a particular individual.

Maxilla

Upper arch, attached to the skull/cannot move.

Mandibular

Lower arch ; movable jaw.

Occlusion

Contact between maxillary and mandibular teeth.

Primary dentition

20 teeth : 10 maxillary, 10 mandibular.

Mixed dentition

Both primary and permanent teeth are present.

Permanent dentition

32 permanent teeth, including 4 third molars/wisdom teeth.

Anterior

Front of mouth.

Posterior

Back of mouth.

Incisors

Central and lateral, anterior teeth, sharp used for cutting food, 8 total.

Canines/cuspids

Pointed teeth, long roots, used to tear food, 4 in total.

Premolars/bicuspids

Located between canines and molars, only permanent there are no pre molars in kids, 8 total.

Molars

Large posterior teeth, used to chew/grind food, for permanent can have up to 12 (including wisdom teeth).

Facial surface

Surface towards the face.

Buccal surface

Facial surface of posterior teeth toward cheek.

Lingual surface

Surface towards the tongue.

Mesial surface

Surface closest to midline.

Distal surface

Surface furthest from midline.

Incisal surface

Biting edge of anterior teeth.

Occlusal surface

Chewing surface of posterior teeth.

Tooth #1

Maxillary right third molar.

Tooth #6

Maxillary right canine.

Teeth #8 & #9

Maxillary central incisors.

Tooth #11

Maxillary left canine.

Tooth #16

Maxillary left third molar.

Tooth #17

Mandibular left third molar.

Teeth #24 & #25

Mandibular central incisors.

Tooth #32

Mandibular right third molar.

Universal numbers for wisdom teeth

1, 16, 17 and 32.

Primary teeth designation

A-T, 20 primary teeth, no premolars.

Quad 1

Maxillary upper right.

Quad 2

Maxillary upper left.

Quad 3

Mandibular lower left.

Quad 4

Mandibular lower right.

Sextants

6 total sections in the mouth, split into 3 sections for upper jaw and 3 sections for lower jaw.

Anterior sextants

Contain 6 front teeth (canines and incisors).

Posterior sextants

Contain 5 teeth (premolars and molars) or two to three back teeth depending on children.