Anatomy of the Periodontium II Que & Answ 2024 | Exam Review
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Course
Anatomy of the Periodontium
Institution
Anatomy Of The Periodontium
Anatomy of the Periodontium II Que & Answ 2024 | Exam Review
1. The joins the tooth to the bone: PDL
2. What is the average width of the PDL space? (seen in radiographs): 0.2 mm
3. T/F: The PDL is vascular and highly cellular: True!
This is why it doesn't show up on X-rays
4. The fibers are ...
Anatomy of the Periodontium II Que & Answ 2024 |
Exam Review
1. The joins the tooth to the bone: PDL
2. What is the average width of the PDL space? (seen in radiographs): 0.2 mm
3. T/F: The PDL is vascular and highly cellular: True!
This is why it doesn't show up on X-rays
4. The fibers are the most important part of the PDL. The terminal portions of these fibers are
called : principal, Sharpey's fibers
5. T/F: Sharpey's fibers are usually calcified: True!
6. Sharpey's fibers are the terminal portions of principal fibers and insert into
on one end and on the other: cementum, bone
7. Principal fibers are mostly type collagen and there are 6 groups of them:
Type I
8. What is the largest group of periodontal ligament fibers?: oblique fibers (extend from
cementum to alveolar bone in a coronal, oblique direction)
these extend in the opposite direction from the alveolar crest fibers (which also run obliquely)
9. fibers transmit vertical masticatory stresses into tension on alveolar bone: oblique
10. fibers prevent extrusion and resist lateral forces: alveolar crest
11.Which type of periodontal ligament fibers do not have osseous attache- ment?: transseptal
fibers
12. Which type of periodontal ligament fibers are also gingival fibers?: -
transseptal fibers
13. fibers extend interproximally over alveolar bone crest and are embed- ded in cementum of
adjacent teeth: transseptal
14. fibers are found in the furcation areas of multirooted teeth: interradicu- lar
15.The ground substance present in the PDL is composed of...: glycosamino- glycans (hyaluronic
acid), glycoproteins (laminin and fibronectin), and water (70%)
16.What is the most common CT cell found in the PDL?: fibroblasts
17.T/F: Implants have shock absorption capabilities: False!
18.What are the two theories of shock absorption?: 1) tensional - PDL fibers have major role
2) viscoelastic - fluid movements are primary factor
19.Which periodontal ligament fibers are responsible for the maintenance of position of gingival
tissues?: transseptal fibers
20.T/F: Cementum is vascualr: False!
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, Anatomy of the Periodontium II Que & Answ 2024 |
Exam Review
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