Gingival Tissue

Describe the histology of attached gingiva

mucosa

- masticatory mucosa - firm and immobile

Describe the histology of attached gingiva

epithiulm

thick layer of parakeratinized stratified squamous epithelium w/rete pegs

Describe the histology of attached gingiva

laminia propria

- lamina propria has an increased vascular supply + is attached to bone (mucoperiosteum)

Describe the histology of attached gingiva c.t

Tall, narrow C.T. papillae

Describe the histology of the sulcular epithelium

- non-keratinized stratified squamous epithelium

- NO rete pegs

- NO C.T. papillae

- smooth epithelial meets lamina propria

Describe the histology of the junctional epithelium

- non-keratinized stratified squamous epithelium

- NO rete pegs

- NO C.T. papillae

The gingival sulcus is created by space between what two structures?

the tooth and the marginal gingiva

What fluid fills the gingival sulcus?

gingival crevicular fluid

What is the depth of the gingival sulcus in health?

0.5-3mm

What is the floor of the gingival sulcus termed?

junctional epithelium which is epithelial attachment to tooth

What cells form the junctional epithelium?

REE (reduced enamel epithelium)

The junctional epithelium is (thick/thin) at the base of the sulcus and (thick/thin) apically

thick at the base of the sulcus > 15-30 cells

thin apically > 3-4 cells

The junctional epithelium provides attachment to the tooth surface via what structure?

hemidesmosomes

The cells of the junctional epithelium remain _______.

undifferentiated, meaning they are immature

(T/f): The junctional epithelium has a physical barrier to microbial attacks

False, it only has WBCs and lysosomes

Epithelial attachment is also known as what?

Internal basal lamina

What forms the internal basal lamina?

cells of REE (reduced enamel epithelium)

What forms epithelial attachment around implants?

epithelial cells of oral mucosa, NOT REE cells

What are layers of the internal basal lamina (epithelial attachment) and their locations?

1) lamina lucida (next to JE)

2) lamina densa (next to tooth)

(T/F): The epithelial attachment functions as a basement membrane

true

(T/F): cells of the attached gingiva regenerate faster than all other oral tissues

How long does regeneration take?

F: Its the junctional epithelium and epithelial attachment regenerates faster

(4-6 days)