Physiology Of Supporting Structures Flashcards
Dense connective tissue attaching the tooth to the alveolar bone
Periodontal ligament
What is the supportive function of PDL?
PDL acts as a shock absorber making sure that occlusal forces are well-distributed
What is the formative function of PDL
Signals from PDL reactions could activate the formation of odontoblasts, cementoblasts, and fibroblasts
What is the nutritive function of PDL
Presence of Blood vessels from alveolar and interradicular arteries
What is the sensory function of PDL
PDL contains both sensory and autonomous nerve endings estimating the amount of pressure during mastication
What is the protective function of PDL
PDL cushions the tooth during traumatic injury
What are the blood supplies of PDL
- alveolar artery
- interradicular artery
- gingival vessels that enter the PDL in crestal region
What are the nerve supplies of PDL
Sensory and autonomous nerve endings
These are fiber attached from the cementum of adjacent tooth extending interproximally over the alveolar crest
Transseptal fibers
Extends obliquely from the cementum beneath the junctional epithelium to the alveolar crest
Alveolar crest fibers
Extends at the right angle to the long axis of the tooth betwern cementum and alveolar bone
Horizontal fibers
These are the largest principal fibers extending from the cementum obliquely to the alveolar bone
Oblique fibers
Radiates from the apical cementum to the alveolar bone the the base of the socket
Apical fibers
Courses over the crest of interradicular septum in the furcations of multirooted teeth
Interradicular fiber
Mineralized connective tissue that covers the roots of teeth
Cementum
