Term
What kind of connective tissue fibers are in the PDL? |
|
Definition
Elastic or Collagen
(called Principal Fibers) |
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Term
How is the formative function of the PDL demonstrated? |
|
Definition
By its ability to form both cementum and bone |
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Term
What does pressure on the PDL cause? Tension? |
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Definition
Pressure causes resorption Tension causes formation |
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Term
What is the name of the bone closest to the PDL? |
|
Definition
|
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Term
The condition when bone and cementum are joined directly without there being a PDL between them. |
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Definition
|
|
Term
the outer layer of the lamina dura which contains which fibers? |
|
Definition
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|
Term
The outside wall of the mandible |
|
Definition
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Term
What happens to the bone and cementum after the removal of calculus and inflammation of tissues? |
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Definition
There is some repair of the bone and cementum, but there is no restoration of the original height of the alveolar crest. |
|
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Term
Groups of epithelial cells in the periodontal ligament |
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Definition
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Term
What is associated with increased width of the PDL? |
|
Definition
Increased function of the tooth |
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Term
What is more easily resorbed than cementum? |
|
Definition
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Term
In the mandibular anterior region, the ____ _____ and the _____ ______ are fused without there being _____ ______ between them. |
|
Definition
lamina dura cortical plate trabecular bone |
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Term
What cells are found in the PDL |
|
Definition
cementoblasts cementoclasts osteoblasts osteoclasts undifferentiated mesenchymal cells macrophages |
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Term
Which cell of the PDL is associated with the replenishment of the fibers and ground substance? |
|
Definition
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Term
Location and function of free gingival fibers |
|
Definition
cervical region cementum to gingiva hold gingiva to the tooth |
|
|
Term
location and function of transseptal fibers |
|
Definition
mesial and distal only cementum to cementum holds teeth in relation to each other |
|
|
Term
location and function of horizontal fibers |
|
Definition
cementum to bone resists horizontal movements |
|
|
Term
location and function of oblique fibers |
|
Definition
cementum to bone prevent apex of tooth from jamming into the socket |
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|
Term
location and function of apical fibers |
|
Definition
cementum to bone resist force from removing tooth from socket |
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|
Term
location and function of interradicular fibers |
|
Definition
in furcation cementum to bone stabilizes the tooth |
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