DH 1350 Quiz 13 Chapter 14

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anatomy2012
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289583
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DH 1350 Quiz 13 Chapter 14
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2014-11-18 22:09:03
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DH 1350 Quiz 13
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DH 1350 Quiz 13 chapter 14 periodontium
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  1. The components of the periodontium include:

    alveolar bone, root, and periodontal ligament

    root, cementum, and periodontal ligament

    alveolar bone, ginigval tissue, and periodontal ligament

    periodontal ligament, cementum, and alveolar bone
    • periodontal ligament, cementum, and alveolar bone
    • page 169
  2. The alveolar bone/ ridge or process is
    composed of:  

    a combination of bone, cartilage and  cementum

    alveolar bone proper

    supporting alveolar bone

    supporting alveolar bone and alveolar bone proper
    supporting alveolar bone and alveolar bone proper
  3. All bundles of principal fibers of the periodontal ligament are embedded at either end in some tooth tissue or some closely associated tissue. They may be embedded either with: 

    One end in cementum and the other in lamina dura (true alveolar bone), or one end in the
    cementum and the other in cervical enamel

    One end in cementum and the other in lamina dura; or one end in cementum and the other in trabecular bone

    One end in the cementum and the other in trabecular bone; or one end in cementum and the other in cortical bone

    One end in cementum and the other in lamina dura; or one end in cementum and the other also in cementum (of an adjacent tooth)
    One end in cementum and the other in lamina dura; or one end in cementum and the other also in cementum (of an adjacent tooth)
  4. Three types of transitional interfaces may be present at the CEJ

    1. Cementum may _________ the enamel at the CEJ and be mistaken for _________  .

    2. Cementum  and enamel may  ______   at the CEJ and pose ________  for the patient or clinician.

    3. A gap may exist between cementum and enamel, exposing ________ and causing _________   root surfaces.
    • overlap
    • calculus
    • meet end to end
    • no problems
    • dentin
    • hypersensitive
  5. Cells found in the periodontal ligament include: 

    Blood cells, endothelium, fibroblasts, cementoblasts, osteoblasts, osteoclasts and
    odontoclasts only

    Blood cells, endothelium, fibroblasts and epithelial rests of Malassez only

    Cementoblasts, osteoblasts, osteoclasts and odontoclasts only

    Blood cells, endothelium, fibroblasts, cementoblasts, osteoblasts, osteoclasts, odontoclasts and epithelial rests of Malassez only
    • Blood cells, endothelium, fibroblasts, cementoblasts, osteoblasts,
    • osteoclasts, odontoclasts and epithelial rests of Malassez only
  6. A cementicle is likely the result of microtrauma, and can be describes as: 

    A cementoblast that becomes entrapped in cementoid

    An abnormal deposit of spherical cementum near the CEJ

    A mineralized body of cementum found on the root or in the periodontal ligament

    An excessive deposit of cementum at the root apex or apcies
    A mineralized body of cementum found on the root or in the periodontal ligament
  7. Match the following terms with their  definitions:

    Cortical bone
    Alveolus
    trabecular bone
    interradicular septum

    the individual tooth socket

    compact bone on the facial and lingual surfaces of the alveolar process/ridge

    the alveolar bone between the roots of multirooted teeth

    cancellous bone that fills the space between compact bone
    compact bone on the facial and lingual surfaces of the alveolar process/ridge

    the individual tooth socket

    cancellous bone that fills the space between compact bone

    the alveolar bone between the roots of multirooted teeth
  8. The functions performed by the periodontal ligament include: 

    Transmits occlusal forces

    Protects surrounding soft tissue structures

    Cementum, dentin, and bone apposition

    Cementum and bone resorption

    Provides nutrition for the periodontium
    • Transmits occlusal forces
    • Protects surrounding soft tissue structures
    • Cementum and bone resorption
    • Provides nutrition for the periodontium

    page 183
  9. Unlike the soft connective tissue of the pulp, the nerve supply of the perioddontal ligament transmits pain, touch, pressure and temperture sensations. 

    True
    False
    • page 183
    • true
  10. Which of the following does NOT come from the Mesoderm embryonic layer?

    alveolar bone
    dentin and pulp
    cementum
    periodontal ligament
    none of these
    none of these
  11. The periodontal ligament appears on
    radiographs as the ___________  , which is a radiolucent area between the lamina dura and the cementum which normally measures in the range of ________   millimeters.
    • periodontal ligament space
    •  0.4 to 1.5
  12. From where do the structures of the the
    periodontium originate?

    dental sac
    outer cells of the dental papilla
    inner cells of the dental papilla
    cervical loop
    dental sac
  13. Match the following terms to their descriptors:
    (avascular or vascular)

    bone
    cementum
    dentin
    pulp
    enamel
    • vascular
    • avascular
    • avascular
    • vascular
    • avascular
  14. Match the following terms to their descriptors.

    cementoid
    sharpey's fibers
    cementocyte
    hypercementosis
    alveolar bone proper

    embedded in both cementum and bone
    also called cribriform or bundle bone
    first cementum laid down
    excessive cementum formation
    embedded in cementum matrix
    • first cementum laid down
    • embedded in both cementum and bone
    • embedded in cementum matrix
    • excessive cementum formation
    • also called cribriform or bundle bone
  15. Bone cells which resorb bone are called ________  and reside in   __________
    • osteoclasts
    • howship's lacunae
  16. Bone cells which form bone are called ________  and cells which reside within bone matrix are called __________
    • osteoblasts
    • osteocytes
  17. The main prinicpal fiber group of the periodontal ligament is the alveolodental ligament which consists of five (5) fiber subgroups which include:

    1.  
    2.  
    3.  
    4.  
    5.
    • alveolar crest
    • horizontal
    • oblique
    • apical
    • interradicular
  18. Compare and contrast Acellular and Cellular Cementum:
    • Acellular cementum is the first cementum to be laid down and it does not have cementocytes. The width of the acellular cementum never changes. The Sharpey's fibers in acellular cementum are fully mineralized.  The Sharpey's fibers in the cellular cementum are generally mineralized only partially at the the edge.  The width of the cellular cementum can change over the life of the tooth.  Cellular cementum is the last cementum to get laid down.  It is laid down at quicker pace so the cementoblasts get stuck in it.  The cementoblasts that
    • don't get stuck migrate to the edge of the cellular cementum and wait until they need to make more cementum.

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