問題一覧
1
tissues of the periodontium?
gingiva, cementum, periodontal ligament, alveolar bone
2
What is the contact point between two teeth gingival?
col
3
NAME THE THREE EPITHELIUM
junctional, sulcular, oral
4
describe the layers of the junctional epithelium
stratified squamous cells, thin, delicate, couple of layers thick
5
only the oral epithelium is keratinised
true
6
layers of the oral epithelium
basal, prickle, granular, keratinised
7
what are rete pegs (found in oral epithelium) ?
Ridges that join with the connective tissue in a wavy pattern
8
function of rete pegs?
Large surface area provides strength and support from pressure
9
Characteristics and function of sulcular epithelium
thin, non keratinised, no rete pegs, semi permeable allowing GCF, no epithelial ridges
10
role of GCF
defense against microbes and inflammation
11
thickness of junctional epithelium apically
4-5 cells
12
thickness of junctional epithelium coronally
15- 30 cells
13
What is the significance of keratinised tissue
Not under pressure, not waterproof , very permeable
14
What are desmosomes
connect epithelial cells
15
what is the internal lamina basal?
Thin layer of extracellular matrix between epithelial cells and enamel
16
What is the external basal lamina
Thin layer of extracellular matrix between epithelial cells and gingival connective tissue
17
What are hemidesmosones
Attaches to connective tissue, attachment to tooth surface by them and internal basal lamina
18
functions of junctional epithelium
attachment, barrier, host defence
19
Gingival connective tissue...?
Attaches the gingiva to the cementum of the root and the alveolar bone
20
Functions of gingival connective tissue
Strength /integrity, transportation, host response
21
Supragingval fibres of connective tissue
Hold teeth in place , made of collagen, gingivitis destroys fibres