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Flashcards in Perio Anatomy Deck (14):
1

Attached Gingiva  Width

Icreases with?

Facial- widest, narrowest

Lingual- narrowest, widest

  • Width increases with age
  • Facial
    • Widest incisors
    • Narrowest premolars
  • Lingual mandibular
    • Narrowest incisors 
    • Widest molars

2

Keratinized Gingiva 

Free Gingiva and Attached gingiva

Anything apical ti it is not keratinized

Main difff btw gingiva and mucosa

3

Oral Mucosa 3 Zones

  • Masticatory Mucosa
    • Tissue of the hard palate and gingiva (covers alveolar process)
  • Specialized Mucosa
    • Covers dorsum of tongue
  • Oral Mucosa Membrane
    • Covers remainder of oral cavity

4

Thin Phenotype

Increased recession

More vulnerable to trauma

More inflammation

Less favorable treatment outcomes

5

Interdental Papilla Shape depends on

The contact relationships between adjacent teeth

Width of approximal tooth surfaces

Couse of CEJ

Anteriors- Pyrimidal

POsteriors- Col

6

Col

Concavity seen in contact areas of premolars and molars

Non-keratinized bc not in cotact with anything during mastication

Similar to junctional epithelium

7

Oral Epithelium

Type of cell

Layers (4)

  • Keratinized stratified squamous epithelium (keratinocytes)
  • Basal layer (basale or germinativum)
  • Prickle cell layer (spinosum)
  • Granular cell layer (granulosum)
  • Keratinized (corneum)

8

2 diff types of keratination of oral epithelium

Orthokeratinized (no nucleus)

Parakeratinized (nuclear remnants)

9

From basal layer to granular layer what increases and what decreases

  • Cytoplasmic tonofilaments and number of desmosomes increase
  • The number of organelles decrease

10

Where are the 2 layers of basement membrane located

  • Lamina Lucida- adjacent basal cells
  • Lamina densa- adjacent connective tissue 
    • anchoring fibers project from lamina densa into CT 

11

Junctional Epithelium 

  • Collar like band of stratified squamous non-keratinized epithelium

12

JE origin during and afer eruption

  • Derived from reduced dental epithelium during tooth eruption
  • After eruption
    • cells of oral epithelium can differentiate into cells of JE
  • JE is continously renewed

13

Periodontitis Occurs when

  • Junctional epithelium migrates apically down root surface, ;eading to attachment loss
  • Viable JE neccessary for pocket formation

14