Dental Anatomy Exam 1

Anatomic position

standing erect, arms at the sides, face and palms are forward

saggital plane

a vertical plane that divides the body into right and left portions.

Median Plane (or midsagittal)

An invisible vertical line that divides the body into equal left and right portions

Frontal Plane

A vertical line that divides the body into anterior (front) and posterior (back) sections.

Transverse Plane

A horizontal line that divides the upper portion and the lower portions of the body.

Anterior/ventral

Front of the body

Posterior/dorsal

Back of the body

upper right quadrant

teeth #1-8

upper left quadrant

teeth #9-16

lower left quadrant

teeth #17-24

lower right quadrant

teeth #25-32

sextants

6 areas

oral cavity anterior

lips (labia)

oral cavity posterior

pharynx

oral cavity lateral

buccal (cheeks)

oral cavity inferior

floor of the mouth

oral cavity superior

palate

space between the lips or cheeks and teeth

vestibule

areas surrounded by teeth or alveolar ridges, back to the palatine tonsils

oral cavity proper

crown

portion of the tooth above the gum line covered by enamel

root

portion of tooth below the gum line covered by cementum

sublingual ducts

bartholin’s duct

submandibular gland

Whartons duct

parotid gland

stensons duct — parotid papilla

four types of papillae of the tongue

circumvallate, foliate, filiform, and fungiform

circumvallate papillae

large papillae with taste buds—divides anterior portion of the tongue from the posterior

filiform papillae

no taste buds, covers 2/3 of dorsal side of the tongue

foliate papillae

on the side walls of the tongue; contains taste buds; fold near the posterior border

fungiform papillae

mushroom-like dots that contain taste buds and are located on the tip and sides of the tongue

alveolar process

bones that hold the root in the jaw

alveolus

tooth socket

The primary dentition consists of __ teeth

20

permanent dentition

32 adult teeth

enamel % of inorganic and organic material

96% inorganic and 4% organic

Dentin % of inorganic and organic material

70% inorganic, 30% organic

Cementum % of inorganic and organic material

50% inorganic, 50% organic

types of cementum

acellular and cellular

acellular cementum

covers most of the anatomic root

cellular cementum

confined to the apical third of the root

clinical crown

the portion of the tooth that is visible

anatomical crown

occlusal or incisal to the CEJ; covered with enamel

anatomical crown

remains the same

clinical crown

can change

odontoblasts

Cells that form dentin and live in the pulp

odontoblastic process

extended through the dentin

pharynx

where the oral cavity ends and the respiratory and digestive pathway begins

sublingual caruncle

duct opening for the submandibular and sublingual salivary glands

major salivary glands

parotid, submandibular, and sublingual

ranula (mucocele)

clogged sublingual duct

enamel

hardest tissue in the body

dentin

second hardest tissue

cementum

hard as bone

pulp

soft tissue within a tooth, containing nerves and blood vessels

cementum function

provides a medium for attachment of the tooth to the alveolar bone

Cementum is formed by ___

cementoblasts

apical vs coronal

apical refers to the direction or area towards the root tip, and coronal refers to the direction or area towards the crown of the tooth