D514 Gingiva and Epithelial Attachment Exam Questions and Answers | Verified

D514 Gingiva and Epithelial Attachment Exam
Questions and Answers | Verified
parts of the periodontum

PDL, cementum, gingiva, alveolar bone

gingiva

portion of oral mucosa that surrounds the neck of the teeth (like a collar) and covers alveolar
process

3 zones of gingiva

free or marginal
attached
interdental

free or marginal gingiva

circles the tooth

defines the gingival sulcus

unattached -> can insert periodontal probe

attached gingiva

-firmly attached to underlying alveolar bone

-joined to tooth by junctional epithelium

-extends from end of free/marginal gingiva (free gingival groove) to mucogingigval junction

-firm and immoveable

interdental gingiva

-space b/w two adjacent teeth apical to contact area

, -wedge shaped zones

-seen in the gingival embrasure

alveolar mucosa

Mucosa between the mucobuccal fold and gingiva.

differences between gingiva and alveolar mucosa

-Gingiva: Part of masticatory mucosa, Keratinized stratified squamous epithelium, Thicker
epithelium; blood vessels are not visible, Appears pale pink due to keratinization

-Alveolar Mucosa: Part of lining mucosa, Non-keratinized stratified squamous
epithelium, Thinner epithelium; blood vessels in the lamina propria are visible,
Appears reddish due to lack of keratinization

4 distinct boundaries of free/marginal gingiva

-coronally - gingival margin

-apically - free gingival groove

-inner margin - gingival sulcus or sulcular eipthelium

-outer surface - oral cavity and vestibule

coronal boundary of free/marginal gingiva

gingival margin

apical boundary of free/marginal gingiva

free gingival groove

inner boundary (tooth surface side) of free/marginal gingiva

forms soft tissue wall of gingival sulcus (green) w/ sulcular epithelium (pink)

outer surface boundary of free/marginal gingiva