Anatomy Flashcards
what is the gingiva made up of
gingival epithelium and connective tissue
what is the gingival epithelium made up of
oral epithelium
oral sulcular epithelium
junctional eptihelium
what are the 4 components of the periodontium
gingivae
periodontal ligament
cementum
alveolar bone
describe the features of healthy gingiva
- pink
- firm
- knife-edge appearance
- scalloped around teeth
- gingival margin is a few mm coronal to the cement-enamel junction
- gingival tissues are keratinised and paler pink than sites of non keratinised oral epithelium
how can gingivae differ in ethnic groups
gingivae pigmented in certain ethnic groups
what is the gingival sulcus
- shallow groove which may be between 0.5-3mm in depth around a fully erupted tooth
- lined by oral sulcular epithelium and junctional epithelium
what is the role of the periodontal ligament
dissipates masticatory forces to the supporting alveolar bone
what does the pdl’s width height and quality determine of a tooth
its mobility
what is cementum
a mineralised tissue overlying the root dentine
doesnt undergo physiological remodelling
continuously deposited throuhgout life
what are the 2 types of cementum
acellular
cellular
what does refreactory mean
non-responsive to tx
what is CAL
clinical attatchment loss
measurement from the base of the pocket to CEJ
what is PPD
pocket probing depth
measurement from the base of the pocket to the gingival margin
what are the 4 principal gingival fibre groups
dentogingival fibres
alveologingival fibres
circular fibres
transeptal fibres
what are the four periodntal ligrament fibre groups
alveolar crest fibres
horizontal fibres
oblique fibres
apical fibres
how is gingivae attatched to the tooth
junctional epithelium
