5. Bone + Periodontal ligament
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Description
BONE PDL attachment is to : alv. Bone proper or called bundle bone The crest of INTERDENTAL BONE is said to be parallel to the marginal gingiva ...
show more PDL attachment is to : alv. Bone proper or called bundle bone
The crest of INTERDENTAL BONE is said to be parallel to the marginal gingiva
Or you could also say it id parallel to the line drawn from the CEJ of adjacent teeth.
Now if the position of CEJ of the neighboring tooth is variable, then the bone will be angulated towards the line.***
PERIODONTAL LIGAMENT
Cells
o Fibroblast
o Osteoblast
o Cementoblast
o Cell rest of malassez
Lateral periodontal cyst from rest of serres ,while apical periodontal cyst from rest of malassez.
Fibres
o Collagen
o Elastic fibres
Cementoblasts present in pdl
Cell rest of malassez seen commonly at apex
FIBRES OF PDL
COLLAGEN 1,3,7
Most dental tissue type I collagen fibres
o Eg: pdl,alveolar bone, cementum, gingiva, dentin
o They are most abundant
Anchoring fibres are type 7, seen in pdl
Type 3 also seen in pdl
Ageing OF PDL
Elastic fibres increase and cells decreases
Function of pdl
Formative, nutritive, anchorage, cushioning (type 7)
Information
Author | Dr.Mayakha Mariam |
Organization | Dr.Mayakha Mariam |
Website | - |
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