dental anatomy final!

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dental anatomy final!
2010-12-13 18:15:56
dental anatomy

dental anatomy final!
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  1. what is formed by the junction of TWO crown surfaces (mesial and occlusal=mesio-occlusal)
    line angles
  2. what are formed by the junction of THREE crown surfaces? (mesial labial incisal = mesiolabioincisal)
    point angles
  3. what are the three dentition periods?
    • primary
    • mixed
    • permanent
  4. primary dentition: ____mo-____yrs. begins with eruption of primary ___________ _________ incisors. ends with first ________ tooth eruption. _________ grow to accomodate the teeth
    • 6 mo- 6 yrs
    • mandibular central
    • permanent
    • jawbones
  5. mixed dentition:
    _________ and ________ teeth. occurs between ages _____ and _____ years. most growth for _________ this stage! begins with eruption of _____ ________ tooth ends with exfoliation of last _________ tooth. color is whiter due to less dentin (than in adults). ________teeth mature sooner and are lost sooner
    • primary and permanent
    • 6-12 years
    • jawbones!
    • 1st permanent
    • primary
    • females (YEAH LADIES!)
  6. permanent dentition:
    ages: _____ years (last tooth usually shed)
    begins with exfoliation of last __________ tooth. tooth types erupt in ______. if one is missing, find out where it is. eruption times differ. congenitally missing are not usually in _____. impacted teeth are usually _______ molars, and _________ with crowding.
    • 12
    • primary
    • pairs
    • pairs
    • third molars
    • canines
  7. these teeth are _____________.
    non-succedaneous! (non replacing!)
  8. permanent teeth that replace primary teeth (everything but the molars) are termed:
  9. what permanent teeth might you see in a nine year old?
    • mand/max centrals
    • mand/max 1st molars
    • mand/max laterals
  10. what permanent teeth might you see in a 7 year old?
    • mand/max centrals
    • mand/max 1st molars
    • mand laterals
  11. what is the FIRST permanent tooth in the entire mouth to erupt???
  12. what are the congenitally missing teeth?
    • mand 2nd premolars
    • max lateral incisors
    • 3rd molars
  13. at what age should someone's first dental appointment be?
    one year!
  14. a supernumerary tooth found in between #8 and #9 is called:
  15. a supernumerary tooth is most commonly found: (3)
    • between max centrals
    • distal to third molars
    • premolar region
  16. when does the bud stage begin?
    8th week of prenatal dev
  17. extensive __________ or growth of the _________ _________ into buds penetrates in the ectomesenchyme. what stage is this?
    • proliferation
    • dental lamina
    • bud stage
  18. at the end of proliferation in the bud stage, the max and mand arches of the primary dentition will have _____ tooth buds
  19. each bud will develop into a _______ _______ and its supporting tissues
    tooth germ
  20. the basement membrane in the bud stage is between the _______ and growing _________
    • bud
    • ectomesenchyme
  21. in the bud stage only _________ occurs, no _________ change
    • proliferation
    • structural
  22. where teeth will not be forming in the bud stage, the dental lamina only remains thickened and later _________ as developing oral mucosa comes to line the oral cavity
  23. the cap stage occurs during the _____ and _____ week of the fetal period
    9th and 10th
  24. ________ _________ in different parts of the tooth bud leads to formation of a cap shape attached to the _______ ________
    • unequal growth
    • dental lamina
  25. what levels of differentiation are active during the cap stage?
    • cytodifferentiation
    • histodifferentiation
    • morphodifferentiation
    • (also morphogenesis!)
  26. the tooth germ, enamel organ, dental papilla, basement membrane, and dental sac are all present in which stage?
    CAP stage!
  27. the bell stage occurs during weeks _____ and _____
    BELL (eleven and twel)
  28. proliferation, differentiation, and morphogenesis occur in what stage?
  29. the dental sac in the bell stage increases the amt of _______ fibers forming around the ______ _______ and will differentiate into cementum, ______ _______, and ______ bone.
    • collagen
    • enamel organ
    • periodontal ligament
    • alveolar bone
  30. the OEE in the bell stage serves as a protective barrier for the ________ organ
  31. the more outer star-shaped cells in many layers that form a network within the enamel is called _______ ________. (bell stage)
    stellate reticulum
  32. what are the three protective barriers in the bell stage?
    • OEE
    • stellate reticulum
    • stratum intermedium
  33. the inner cells of the dental papilla (in the bell stage) become:
    pulp tissue
  34. the outer cells of the dental papilla (bell stage) will become:
    (nearest IEE) ondontoblasts that form the dentin matrix
  35. what is the function of hertwigs sheath (HERS)?
    to shape the root(s) and induce dentin formation in the root so it is continuous with the coronal dentin.
  36. what are the rests of malassez and where do they come from?
    they are from HERS root sheath disinigrating. located in the mature perio ligament. may become cystic
  37. partial anodontia occurs in which teeth?
    • max laterals
    • mand premolars
    • max/mand thirds
  38. what stage does anodontia occur?