Oral Biology - Intro to Periodontal Tissues Flashcards
What does the periodontium consist of?
- Periodontal ligament
- Bone
- Adjacent mucosa (gingiva)
Name the structures.
** provides the attachment of the alveolar bone to the tooth.
Periodontal Ligament (PDL)
What makes the PDL strong and flexible?
Dense fibrous connective tissue
Where are stem cells for the tooth stored?
Within the PDL. Osteoblasts, fibroblasts, cementoblasts etc.
Primary functions of the PDL?
- Tooth-bone attachment
- Shock absorber (during mastication)
- Heavily innervated
Name the structures
Function of the alveolar bone
Hold the roots of teeth
To absorb and distribute occlusal forces generated by oral functions
*** Bone is positioned inferior to Alveolar Bone
Basal
If the tooth is removed, what happens to the surface of the pocket left?
The alveolar bone gradually disintegrates and the gingiva grows over the void, creating a smooth surface.
Function of the basal bone?
Gives shape + strength
Alveolar and basal done refers to the position whilst cortical and trabecular bone refers to…
the type of bone.
Which bone is “spongy”?
Trabecular bone
What is usually referred to as the “socket” of the bone?
The Lamina Dura
Where is local anaesthesia applied?
Into the alveolar bone, travels through to trabecular bone as it is very porous. Drug enters through the apex (via nerves). Won’t work on lower teeth (molars)
What is the function of each type of mucosa?
- Masticatory (Chewing)
- Lining (Flexibility)
- Specialised (Tongue (taste))
Where is the specialised (i.e., gustatory) mucosa found?
Dorsal surface of the tongue
Name the structures
Name the type of lining
It is crucial to understand where to insert the injection to avoid unnecessary pain for the patient.
Annotate the structures
