Endo Oral Tissues

  1. Main function of the pulp
  2. pulp participates in the development of dentin and then dentin formation leads to enamel formation and ultimately formation of a tooth
    induction function of the pulp
  3. pulp supplying nutrients
    Nutrition function of the pulp
  4. pulpal odontoblasts form dentin in response to injury and pulp has the ability to elicit an immune response
    defense function of the pulp
  5. pulpal nerves can respond to stimuli
    Sensation function of the pulp
  6. What is pulp derived from
    cephalic neural crest cells
  7. What do NCC arise from?
    ectoderm in the neural plate
  8. what forms the dental lamina
    The proliferation of oral ectodermal cells
  9. In the cap stage the ___ cells are cuboidal and the ___ cells are elongated
    • Outer
    • Inner
  10. What forms the pulp?
    ectomesenchymal cells of the dental papilla located beneath the inner enamel epithelium
  11. The dental sac becomes what
    the PDL
  12. The cervical loop is what?
    where the IEE and OEE meet
  13. the cervical loop proliferates and forms what?
    Herwig Epithelial Root Sheath
  14. Formation of ameloblasts and then odontoblasts occurs when?
    during the late cap stage
  15. What stage do odontoblasts lay down dentin
    Bell stage
  16. Root sheath breaks apart and allows mesenchymal cells of the dental sac to contact dentin and these cells form what
  17. During formation of the root sheath and before dentin formation, breaks can develop in the root sheath, resulting in a direct communication between the dental sac/PDL and pulp forming what
    Lateral or accessory canals
  18. Dentin that forms during tooth development
    Developmental or primary dentin
  19. dentin formed normally after root is fully developed
    Secondary dentin
  20. the first dentin formed
    mantle dentin
  21. the unmineralized organic matrix of dentin between the odontoblastic layer and the mineralized dentin
  22. Dentin formed in response to injury
    Tertiary dentin
  23. tubular dentin formed by the original odontoblasts
    reactionary dentin
  24. atubular dentin formed by NEW odontoblasts
    reparative denti
  25. T/F: dentin is slightly tapered, wider potation toward the pulp
  26. ______ dentin the tubules have a gentle S shape as they extend from the DEJ to the pulp
  27. What occurs to the dental tubules near the DEJ
  28. dentin lining the tubules that is highly mineralized
    Peritubular dentin
  29. dentin between the rings of PT dentin and consists of the bulk of dentin
    Intertubular dentin
  30. Dentinal sclerosis causes a ___ in dentin permeability
  31. The organic matrix remains unmineralized, because the mineralizing globules fail to coalesce
    Interglobular dentin
  32. Dentinal fluid resembles what
  33. The size and density of dentin tubules ___ as the it gets closer to the pulp

    (larger tubules, more dense)
  34. microcrystalline grinding debri covers the dentin and clogs the tubules and helps prevent bacterial penetration
    Smear layer
  35. Order of the morphologic zones of the pulp from bottom up (6)
    pulp proper--> cell rich zone--> cell free zone--> odontoblast layer--> predentin-->dentin
  36. synthesize the dentinal matrix and control mineralization of dentin
  37. What are the three parts of the odontoblast
    • Cell body
    • Cell process
    • odontoblastic process
  38. Where do the preodontoblasts (stem cells) reside
    Cell-rich zone
  39. most common and numerous cells of the coronal pulp
  40. what type of collagen do fibroblasts synthesize
    1 and 3
  41. Most prominent immune cell in the pulp
    Dendritic cells
  42. What cells are seldom found in normal pulp but more so in chronically inflamed pulp
    mast cells
  43. What type of collagen is found in dentin? What types are found in pulp and which of those is the most abundant
    Type I 

    type 1 and 3 but type 1 more abundant
  44. Type 1 collagen in dentin is synthesize by what? (2)
    Odontoblasts and osteoblasts
  45. three types of pulp stones
    Attached (continuous w dentin), free (surrounded by pulp) and embedded (tertiary dentin)
  46. excessive deposition of mineralized tissue on the dentin walls
    Calcific metamorphosis
  47. what plays an important role in regulating pulp circulation
    AV shunt
  48. Assist in the removal of inflammatory exudate and is located in the coronal region
  49. nerve fibers that transmit sharp, fast more localized pain (temp and touch too)
    Myelinated delta A fibers
  50. where are delta A fibers located
    pulp-dentin junction
  51. nerve fibers that are responsible for burning, aching and dull, diffuse pain that are located throughout the pulp
    non-myelinated C fibers
  52. Nerve bundles that branch and form the subodontoblastic plexus or the
    the Plexus of Raschkow
  53. Mandibular premolars – can receive sensory branches from the ______ nerve of V3

    Mandibular molars – can receive sensory innervation from the ____ and _____ _____ nerves
    mylohyoid nerve of V3

    2nd and 3rd cervical
  54. When you stimulate the DEJ and the patient feels it despite no nerves existing in the out third of the dentin toward the DEJ this is due to
    Dentin hypersensitivity
  55. Very little amount of nerves exist in the _____ and extend a short length in dentin
  56. what is the role of the cementum?
    provides attachment to the PDL 

    acellular and cellular with fiber attachment
Card Set
Endo Oral Tissues
Final Exam Material