Gingiva - Post review

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specialized extracellular matrix

Because of the unique components of the internal basal lamina what is it considered

No

Does lining OM function in mastication?

Outer surface Sulcular/crevicular epithelium Junctional epithelium

How can gingiva be firther broken down?

Papillae, some with taste buds

How is specialized OM organized?

Minimal

How much gingival crevicular fluid is present in healthy conditions?

Endotoxins Trypsin-like enzymes Acid phosphatase Alkaline phosphatase Prostaglandin-like products

What are the bacterial components that make up GCF?

Interleukins (IL-1a+b) TNF-a Lactic acid Hydroxyproline Cytotoxic substances Antibacterial factors

What are the biomarkers that make up GCF?

Corneum Granulosum Spinosum Basale

What are the layers of (para) keratinized epithelium?

acid phosphatase alkaline phosphatase Cathepsin G, B, + D Collagenase Elastase Beta-glucironidase Gelatinase

What are the proteolytic + hydrolytic enzymes that make up GCF?

Alveogingival fibers

What binds the ginigva to the tooth and bone extending from the alveolar crest into the ginigva?

Dentogingival fibers

What binds to the gingiva to the tooth and bone extending from cementum into the gingivae?

FIbroblasts Undifferentiated MSC Mast cells Macrophages

What cells are in the gingiva CT?

smooth, intact no rete pegs

What does the inner sulcular epithelium look like in a healthy state?

Dense CT that does not contain large vessels

What does the lamina propria consist of?

crest of the gingiva, free gingiva and the attached gingiva

What does the outer epithelium cover?

Collagen fibers

What firmly attaches the attached gingiva to the bone?

Attached gingiva

What in the maxilla blends with palatal mucosa?

Papillary layer

What is blue?

Sulcular epthelium

What is blue?

Sulcus

What is blue?

Epithelium

What is green?

gingiva PDL cementum alveolar bone

What is included in the periodontium?

Rete pegs

What is pink?

Reticular layer

What is purple?

Junctional epithelium

What is red?

Lamina propria

What is red?

Gingival crevicular fluid

What is secreted through the outer sulcular epithelium?

a sign of health, but an absence of it is not always sign of disease

What is stippling considered?

Salivary glands

What is teal?

The portion of the gingiva that is firm, dense, stippled and tightly bound to the underlying periosteum, tooth, and bone

What is the attached gingiva?

Para-keratinized

What is the epithelium type in outer/oral gingival epithelium?

Related to permeability of CT

What is the flow of crevicular fluid based on?

Protect underlying structures while allowing some interaction w/ environment

What is the function of the epithelium

Protective

What is the function of the oral epithelium?

shallow fissure between the marginal gingiva and the enamel or cementum

What is the gingival sulcus?

true basement membrane components: Collagen IV + VII Laminin 1

What is the internal basal lamina lacking in?

Papillary layer + reticular layer

What is the lamina propria made of?

Submucosa

What is yellow?

stratified squamous, non-keratinized

What kind of epithelial cells make up lining OM?

Stratified squamous, keratinized

What kind of epithelial cells make up masticatory OM?

stratified squamous, non-keratinized

What kind of epithelial cells make up specialized OM?

Outer surface: Ortho keratinized epithelium Sulcular/crevicular epithelium: non-keratinized epithelium Junctional epithelium: non-keratinized

What kind of epithelium in gingiva areas: Outer surface Sulcular/crevicular epithelium Junctional epithelium

Inorganic ions Organic ions Proteolytic + hydrolytic enzymes Bacterial product Bio markers

What makes up gingival crevicular fluid?

Papillary + reticular CT layers

What makes up the dermis/lamina propria?

Cornified cells

What offers resistance to attrition in masticatory OM?

Rete pegs

What projects into the CT of the oral epithelium?

- lips - cheeks - floor of mouth - soft palate - ventral tongue

What structures of the OM are lining?

Gingiva + hard palate

What structures of the OM are masticatory?

Dorsum of tongue

What structures of the OM are specialized?

from base of mandible in lower jaw and the anterior nasal spine in maxilla

Where does the MGJ maintain a constant distance?

CT of inner sulcular epithelium into the sulcus from capillaries

Where does the gingival crevicular fluid flow from?

outer epithelium into the gingival sulcus

Where does the inner sulcular epithelium extend from?

At the MGJ

Where is the ginigva distinguished from the oral mucosa?

height of the gingiva extending to the junctional epithelium

Where is the sulcular epithelium found?

Interdental papilla

green?

interaction between ICAM-1 and LFA-1

how do neutrophils and lymphocytes penetrate into the junctional epithelium

coral pink, pink or pale pink but clinically the color can vary depending on melanin

how is the gingiva described in terms of physical characteristics

1mm wide (freakin yuge)

how wide is the marginal gingiva

frenum

orange?

col

pink?

Gingival groove

purple?

Attached gingiva

red?

Alveolar mucosa

teal?

MGJ

the attached gingiva is the portion that extends coronally from the ______

Laminin 5 and collagen type VIII

what are some of the components of the internal basal lamina

-cleansing sulcus -improving epithelial cell adherence to tooth surface -possessing antimicrobial and immune properties

what are the functions of gingival fluid

attached gingiva free gingiva/marginal gingiva papillary gingiva

what are the three subtypes of the gingiva

hemidesmosomes

what attaches the junctional epithelium to the tooth surface

ICAM-1

what does junctional epithelium express constitutively express

fibers from the connective tissue

what enhances the attachment of the junctional epithelium to the root surface

Increase in height

what happens to the height of the epithelial ridges with age

same as structures of typical basement membrane - lamina densa - lamina lucida

what is characteristic of the external basal lamina

firm, dense, stippled and tightly bound to underlying periosteum tooth and bone

what is the attached ginigva

dentogingival unit

what is the attachment of the free marginal gingival functional unit called

the depth past the gingival margin to which a periodontal probe will penetrate when introduced with light pressure

what is the clinical gingival sulcus?

Lamina propria

what is the connective tissue beneath the gingiva

keratinized and stippled

what is the epithelium of the attached gingiva

thin non-keratinized/para-keratinized

what is the epithelium of the inner sulcular epithelium

part of the gingiva that surrounds the tooth and is not directly attached to the tooth surface

what is the free gingiva

protection of the attachment of the tooth to the surrounding tissues

what is the function of the junctional epithelium

limit between the movable and immovable mucosa during the passive motion of the lip or cheek

what is the functional definition of the MGJ

valley like depression of the interdental gingiva that connects facial and lingual papillae and conforms to the shape of the interproximal contact area

what is the gingival col/col

shallow fissure between marginal gingiva and enamel or cementum

what is the gingival crevice

portion of the gingiva that overlies the junctional epithelium

what is the gingival cuff

most coronal portion of the gingiva

what is the marginal gingiva

area of union of the gingiva and alveolar mucosa

what is the mucogingival junction (MGJ)

attached gingiva and outer surface of free gingiva

what is the oral or outer epithelium

flush the tooth of pathogens and toxic metabolites from periodontium ; cushion tooth against foreign insult

what is the purpose of GCF?

1-9 mm

what is the width range of the attached gingiva

stratified squamous epithelium, non-keratinized

what kind epithelium does the junctional epithelium have

junctional epithelium

what separates the periodontal ligament from the oral environment?

Free/marginal gingiva

yellow?

CT of collagen fibers

60% of the lamina propria is made of

Permeable

Is the sulcular epithelium permeable or impermeable?

Gingiva

________ is the fibrous investing tissue covered by keratinized epithelium that immediately surrounds the tooth and is contiguous with its PDL and with the mucosal tissues of the mouth

Gingiva

____________ is that part of oral mucosa that covers the alveolar processes of the jaws and surrounds the necks of the teeth

Muco gingival junction

blue?

No remains stationary and constant

does the MGJ change over life

No

does the attached gingiva have a submucous layer

No

does the internal basal lamina have a true basement membrane


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