Periodontium
- purposeful system of TISSUES that surrounds teeth and attaches them to the jawbone
- "supporting tissues of teeth" or "attachment equipment"
peri = round. Odontos = tooth
tissues of the periodontium
- gingiva
- cementum
- periodontal ligament
- alveolar bone
gingiva
the part of mucosa that surrounds CERVICAL quantities of tooth and COVERS ALVEOLAR
PROCESS:
- attached via specialized epithelial tissue (which makes up the junctional epithelium)
- composed of thin outer layer of epithelium and underlying layer of CT
characteristic of gingiva
- protects underlying enamel-supporting systems of periodontium from oral environment
(through protection mechanisms along with saliva and immune machine)
gingival margin
- top part (coronal)
- follows teeth contour creating a scalloped outline
alveolar mucosa
- decrease part (apical)
,- darkish purple tissue
free gingival groove
a shallow linear depression separating FREE and ATTACHED GINGIVA
(hard to peer)
mucogingival junction
where the crimson attached gingiva meets the pink alveolar mucosa (clinically seen)
4 anatomical regions of gingiva
1. Loose gingiva
2. Connected gingiva
3. Interdental gingiva
four. Gingival sulcus
unfastened gingiva
- UNATTACHED, surrounds teeth inside the vicinity of CEJ
- "unattached gingiva" "marginal gingiva"
- turtleneck
- fits closely around the teeth but isn't always at once attached
- placed ABOVE CEJ
unfastened gingiva is attched by way of
junctional epithelium
- paperwork smooth tissue lateral wall of the gingival sulcus
attached gingiva
tightly bound to the underlying cementum (non-stop with free gingiva)
- on the cervical-third of the basis and on the periosteum of the alveolar bone
,- dimpled/stippled
attached gingiva placed among
free gingiva and alveolar mucosa
- widest inside the incisor and molar areas
- narrowest in premolar areas
dimpled/stippled look most effective visible on
attached and interdental gingiva
- NOT on marginal/free gingva
- gives mechanical reinforcement
motive of attached gingiva
- resist forces during chewing, speakme and brushing
- prevents loose gingiva from being pulled apically from the teeth when anxiety is carried out to
alveolar mucosa
interdental gingiva
- fills the interdental space (embrasure) just underneath contact place
- prevents meals between teeth
- gingival col
2 interdental papillae
- FACIAL & LINGUAL
- lateral border and tip formed by way of free gingiva of adjacent tooth
- centre is shaped by means of connected gingiva
gingival col
, - valley-like despair apical to the contact location of 2 adjoining enamel that connects facial and
lingual papillae
- col will NOT be present if there's a big area among 2 enamel/gingival recession
gingival sulcus
- v-shaped shallow area among free gingiva and teeth surface
- measured with the aid of probe (1-3mm)
- BASE OF SULCUS shaped via JUNCTIONAL EPITHELIUM
gingival crevicular fluid (GCF)
- seeps from underlying CT into the sulcular area
- LITTLE TO NONE in a healthful sulcus
- increases with plaque, brushing and chewing, UNHEALTHY GINGIVA
periodontal ligament (PDL)
- CT that covers the ROOT of the tooth and ATTACHES IT to the BONE of the enamel socket
(cementum and alveolar bone)
- composed of DENSE FIBROUS TISSUE
5 capabilities of periodontal ligament
1. Supportive
2. Sensory
three. Nutritive
four. Formative
5. Transforming
formative (characteristic of PDL)
presenting cementoblasts and osteoblasts