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Flashcards in 510-10 Deck (23):
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Primary Epithelial Band

thickened epithelium on mandibular and maxillary processes

1

ectomesenchyme

neural crest cells that condense and direct primary epithelial band thickening

2

2 models of tooth type differentiation

1.) field model- different gradients of genes
2.) clone model- one tooth directs development of adjacent tooth

3

vestibular lamina

will develop into space between the teeth and cheek

4

dental lamina

ingrowth of primary epithelial band that will become tooth

5

bud

invaginated epithelia thickens to form a bud

6

dental papillae

condensed ectomesenchyme cells that will become dentin and pulp

7

cap stage

enamel organ has 3 layers: inner enamel epithelium, stellate reticulum, and outer enamel epithelium

8

stellate reticulum

cells that draw water into the enamel organ

9

enamel knot

non dividing cells that appear during cap stage and will organize the cusp development

10

bell stage

dental lamina begins to degenerate and outer enamel epithelia looks like a bell

11

cervical loop

region where IEE and OEE fuse together at cervical end of tooth

12

enamel chord

forms during bell stage and corresponds to the cusps of molars

13

enamel pearls

dental lamina that isn't degenerated and forms enamel balls

14

apposition stage

characterized by the production of enamel and dentin

1.) amyloblasts differentiate first
2.) odontoblasts differentiate and produce predentin
3.) enamel is produced

15

Hertwig's Epithelial Root Sheath

apical region of developing tooth where IEE and OEE fuse (gives rise to odontoblasts and cementoblasts)

16

succedaneous lamna

permanent tooth

17

3 stages of amelogenesis

1.) presecretory
2.) secretory
3.) maturation

18

proteins produced by ameloblast

1.) amelogenins- orient rods
2.) non amelogenins- not present in mature structure
- enamelins- elongation of apatite crystals
-ameloblastin- sticking of ameloblasts to enamel

19

tome's process

part of ameloblast where enamel is secreted

20

perikymata

shallow furrows in the enamel that corresponds to the striae of retzius

21

von korff's fibers

collagen fibers associated with predentin

22

epithelial rests of malassez

part of HERS function is not well known