Anatomy Test 2

Front 1

the process of shedding the deciduous teeth and replacement by the permanent teeth

Back 1

exfoliation

Front 2

as the bone continues to grow, the deciduous teeth develop spaces between them

Back 2

primate spaces

Front 3

the spaces between the deciduous canines and first molars and those between the first and second molars

Back 3

leeway spaces

Front 4

the emergences of a crown into the oral cavity

Back 4

active tooth eruption

Front 5

movement the crown develops while the bottom of the socket fills in with bone, pushing the crown toward the surface

Back 5

spatial

Front 6

the grown of a tooth does not grow in a perfectly symmetical pattern

Back 6

excentric or off-center growth

Front 7

the reduced enamel epithelium contacts the oral epithelium and these two laters fuse to one layer

Back 7

united oral epithelium

Front 8

plays a role in the formation of cementum of the rot, the perio ligaments and alveolar bone

Back 8

dental sac

Front 9

a condition in which the alveolar crest of bone fuses in the cervical area with the cementum of a resorbing root

Back 9

ankylosis

Front 10

uses arabic numerals 1 through 32 for permanent teeth and the letters A throught T for primary

Back 10

uninversal system

Front 11

each four quads are given there own prefix symbol or quad bracket

Back 11

palmer notation system

Front 12

each tooth, deciduous or permanent is given a two digit number

Back 12

federation dentaire international

Front 13

continually formed within the tooth byh the same odontoblasts that form regular dentin

Back 13

secondary dentin

Front 14

the fusion of lobes

Back 14

coalescence

Front 15

the deciduous molars are often called

Back 15

the 2 year molars

Front 16

the first teethof the permanent dentiton to emerge into the oral cavity are usually the mandibular molars which are sometimes called

Back 16

6 year molars

Front 17

as the permanent tooth erupts, osteoclastic cells destroy the root of the deciduous tooth

Back 17

resorption

Front 18

the process by which the roots of a baby tooth are resorbed and dissolved until so little root remains that the baby tooth falls out

Back 18

exfoliation

Front 19

permant second molars are sometimes called

Back 19

12 year molars

Front 20

tooth that never forms b/c a tooth bud was never produced from which it could be formed, this can be a hereditary trait

Back 20

congenitally missing tooth

Front 21

the wearing away of the tooth contact of its functioning surfaces

Back 21

attrition

Front 22

the curved alignment of the occlusal plane

Back 22

curve of Spee

Front 23

during the bud stage, the cells of the embryonic connective tissue deep to the bud resemble large multipointed cells

Back 23

mescenchymal cells

Front 24

the mescenchymal cells adjacent to the cap become more rounded and condensed

Back 24

dental papilla cells

Front 25

during the bell stage the inner enamel epithelial cells become taller

Back 25

preameloblasts

Front 26

outlines the rod and contains most of the fibrous organic substance

Back 26

rod sheath

Front 27

is made up of hydroxyapatite crystals and is the primary unit of enamels structure

Back 27

enamel rod

Front 28

3 or 4 ameloblasts act together to form one enamel rod by laying down fibers and a matrix composed of a gluelike material

Back 28

ground substance

Front 29

second stage of calcification

Back 29

maturation

Front 30

every fourth day there seems to be a change in the development of the rod, and a brownish line develops in the enamel

Back 30

striae of retzius

Front 31

looking at the labial surface of an anterior tooth you can see horizontal lines on the crown

Back 31

imbircation lines

Front 32

the final job of the ameloblasts is to lay down a protective layer over the enamel

Back 32

primary enamel cuticle or nasmyth's membrane

Front 33

after the ameloblast produce the primary cuticle, it begins flattening out and blending with the outer enamel epithelial cells

Back 33

reduced enamel epithelium

Front 34

the reduced enamel epithelium produces an adhesive like secretion

Back 34

secondary enamel cuticle or epithelial attachment

Front 35

epithelium that adheres to the tooth

Back 35

attachment epithelium

Front 36

spots or entire areas of the teeth appear white to whitish yellow in color

Back 36

hypocalcified enamel

Front 37

the enamel will have a yellow to gray hue and may be seen radiographically as a thinner than the normal layer of enamel

Back 37

hypoplastic enamel

Front 38

small area of hypocalcified enamel seen ar the DEJ and extending about one fourth to one third of the way through the enamel

Back 38

enamel tuft

Front 39

a cellular extensioin of the odontoblast that becomes trapped between ameloblasts in early development and thus end up in the enamel

Back 39

enamel spindle

Front 40

a long tube, running from the DEJ or DCJ to the pulp. each tubule contains an odontoblastic process

Back 40

dentinal tubule

Front 41

an area of higher crystalline content immdeidately surrounding the dentinal tubules

Back 41

peritubular dentin

Front 42

the bulk of the dentinal material

Back 42

intertubular dentin

Front 43

the layer formed inside the regular dentin and positioned closest to the pulp

Back 43

secondary dentin

Front 44

poorly calcified dentin that becomes entrapped

Back 44

interglobular dentin

Front 45

dentinal tubules that are empty b/c of the death of the ondontoblasts that orginally occupied them

Back 45

dead tracts

Front 46

condition in which the dentinal tubules are filled with a dentin material

Back 46

sclerotic dentin