Orofacial anatomy chapter 4

Dentition

the arrangement of teeth

Primary Dentition

20 deciduous teeth

-no premolars

nonsuccuedaneous

"Baby teeth"

Secondary dentition

32 permanent teeth

Teeth divisions

-arches

maxillary arch

mandibular arch

-Quadrants

Right maxillary

Left maxillary

right mandibular

Left mandibular

What does each permanent dentition quadrant have?

-Central incisor

-Lateral incisor

-Canine

-1st and 2nd premolar

-1st,2nd, and 3rd molar

A primary (deciduous) quadrant has?

-2 incisors

-canine

-1st and 2nd molar

(no premolar)

Succedaneous Teeth

Permanent teeth that replace or succeed deciduous teeth (except for molars)

Nonsuccedaneous teeth

permanent molars that do not succeed or replace deciduous teeth

-Primary teeth are nonsuccedaneous

Mixed dentition

when some deciduous teeth and some permanent teeth are present at the same time

are permanent premolars succedaneous teeth?

Yes, because they replace deciduous molars.

To identify a specific tooth, list...

-Dentition (permanent/primary)

-Arch (max./mand.)

-quadrant (upper left, etc)

-Tooth name (2nd premolar)

Universal system

1-32 permanent

a-t primary

-Uses number sign even in front of letter for primary

ex. #24, #k

Palmer Notation system

-Bracket and number 1-8 (1 closest to the midline in all quadrants)

-A-E primary (A closest to the midline in all quadrants)

FDI system (international) Permanent dentition

-two numbers

-no number sign

-quadrant (1-4) number first then tooth number (1-8) (1 closest to the midline in all quadrants

FDI (international) primary dentition

-quadrants (5-6)

-5 starting at max. right

-1-5 tooth numbers in each quadrant

(1 being closest to midline)