Embryology

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Author:
sthomp88
ID:
51044
Filename:
Embryology
Updated:
2010-12-06 02:11:24
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Quiz eight
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Description:
Ch. twelve 8
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  1. What is the space between each of the enamel rods called?
    interprismatic region
  2. what embryonic tissue does enamel develop from?
    ectoderm
  3. what is the chemical formula for calcium hydroxyapatite?
    Ca10(PO4)6OH2
  4. What is the shape of the enamel rods produced by tome's process?
    hexagonal
  5. ename rods run_______to the DEJ
    perpendicular
  6. the raised scale-like pattern of enamel
    Imbrication lines
  7. accentuated incremental lines because of the trauma at birth
    neonatal line
  8. the grooves between each of the scales
    perikymata
  9. incremental lines showing that enamel is secreted cyclically
    lines of Retzius
  10. enamel matrix is first formed at the______edge of the tooth
    incisal
  11. if your enamel is wearing away because of tooth to tooth contact, it is called what?
    attrition
  12. if the enamel is being decalcified by the waste produts of cariogenic bacteria, it is called what?
    caries
  13. if enamel is wearing away caused by contact with some sort of non-tooth structure (like a bobby pin or a toothbrush) is called what?
    abrasion
  14. if the enamel just breaks off at the cervical margin of the tooth, it is a weird condition called what?
    abfraction
  15. if some sort of chemical is wearing away your enamel (usually stomach acid) it is a condition called what?
    erosion
  16. where does most stain collect, and therefore, where bleaching is most active?
    interprismatic region
  17. etching removes the organic portions of the enamel to open gaps for sealant material to adhere to, this is a________ attachment
    mechanical
  18. Why does bleachinc cause sensitivity?
    because the bleach reaches down to the dentin which has dentinal tubules that reach to, and send signals to the pulp which contains nerves

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