Dental Anatomy

Card Set Information

Dental Anatomy
2010-11-08 20:23:54

fundamental and preventive curvatures
Show Answers:

  1. what are the five functions of primary teeth?
    • aesthetics
    • mastication
    • speech
    • placeholders
    • primate spaces
  2. what are primary teeth place holders for?
    succedaneous teeth
  3. where are the primate spaces on the mandible?
    between the primary canine and the 1st primary premolar
  4. where is the primate space on the maxilla?
    between primary canine and primary lateral
  5. why is it important to educate the caregiver about the value of primary teeth?
    • to prevent premature tooth loss
    • prevent baby bottle mouth
  6. what is baby bottle mouth
    teeth are black ground down to gums
  7. when should the 1st dental visit be fore a child
    before 12 months- primary goal is to educate caregiver
  8. what are three important things to know about primary dentition?
    • enamel and dentin thinner
    • pulp chambers larger
    • early aggressive periodontitis
  9. where will bone loss be seen with early aggressive periodontitis?
    around lower anterior incisors and mandibular 1st molars of primary and permanent dentition
  10. what is a sign of early aggressive periodontitis?
    severe gingivities
  11. why is it important to know that the pulp chambers are larger?
    more pulp exposure with restorations and may need endo more
  12. how many phases of arch development are there?
  13. which teeth erupt in phase 1 of arch development?
    • eruption of permanent 1st molars
    • permanent incisors
  14. what two things are enhanced during phase 1 of arch development?
    • chewing efficiency
    • jaw stability
  15. during phase 1 of arch development ______ ______ remain to allow for future perm teeth
    primate spaces
  16. which teeth are shed during phase 1 of arch development?
    primary incisors
  17. what teeth erupt during phase 2 of arch development?
    permanent anterior teeth (centrals first then laterals
  18. t/f the permanent location of anterior teeth is not established until the arch is fully developed?
  19. when does phase 3 begin?
    when the premolars erupt
  20. what is the difference in size m-d between primary molars and perm premolars called?
    leeway space
  21. what is the purpose of the leeway space?
    allows for future movement of the molars
  22. what is required to preserve the space if perm 2nd molars erupt prior to premolars or if a primary molar is lost prematurely?
    space maintainer
  23. when does phase 4 of arch development begin?
    when canines wedge between lateral incisors and first premolars
  24. what space helps for the eruption of the canines?
    leeway space and primate space
  25. when is the contact relation between teeth established?
    phase 4
  26. what teeth erupt during phase 4 to support 1st molars during wedging process?
    2nd molars
  27. at the end of phase 4 the arch is complete from the _____ _____ forward
    1st molar
  28. what is the final phase in arch development?
    phase 5
  29. what does phase 5 consist of?
    eruption of third molars
  30. what stage can be missing from some peoples arch development?
    phase 5
  31. _______ of the teeth contribute to the maintenance of the teeth within the dental arch.
  32. what curve is produced by the curved alignment of all the teeth, the maxillary arch is convex and the mandibular arch is concave.
    curve of spee
  33. what is a concave curve that results when a frontal section is taken through each set of both maxillary and mandibular molars, firsts, seconds and thirds.
    curve of wilson
  34. what are three curvature functions?
    • preventing dental disease
    • dispersing occlusal trauma
    • protecting gingiva
  35. what is the life expectancy associated with curvature functions?
    the longer you have your teeth the longer your life will be
  36. what two things are prevented by proximal contact areas
    • food impaction
    • bacteria and debris build up
  37. t/f the proximal contact area anchors teeth. preserves bone support.
    both true
  38. proximal contact areas resist ______ ______
    traumatic forces
  39. where are the contact points?
    on the occlusal surface of the teeth, where the two arches come together
  40. where is the contact on anterior teeth?
    incisal third
  41. where is the contact on the posterior teeth?
    middle third or more cervical
  42. _____ _____ distal contact is at the center of the middle third
    maxillary canine
  43. the _______ ______ goes from the buccal to lingual surface
    interproximal space
  44. where is the interdental space?
    between and around roots
  45. ______ ______ is the supporting bone area
    interdental space
  46. what are gingival or cervical embrasures?
    interdental papilla is missing
  47. where are the interdental papilla?
    triangular shaped spaces between teeth
  48. how are embrasures named?
    based on the location relative to the contact area...buccal, lingual
  49. what are the spaces between the teeth that are occlusal to the contact areas?
    dental embrasures
  50. what are the purposes of embrasures (4)?
    • prevent food impaction
    • dissipate occlusal forces
    • self cleansing
    • stimulates gums
  51. how are embrasures self cleansing?
    because they shunt food away
  52. where is the curvature of the CEJ more curved and steep?
    anterior maxillary teeth
  53. t/f the curvature of the CEJ gets flatter on posterior teeth
  54. t/f curvature of CEJ and cervical line are the the same thing?
  55. what is the reason for the more curved and steep CEJ on maxillary anterior teeth?
    attach to bone and gives them more support
  56. what are the 5 self cleaning tendencies of teeth?
    • enamel
    • crown shape
    • tooth shapes
    • tongue and cheek
    • pits and fissures
  57. how is enamel self cleaning?
    smooth and slippery
  58. how does the crown shape help with self cleaning?
    deflects food
  59. how does the tooth shape for incisors, canines and premolars help with self cleaning
    • incisors-shovel push food off tooth
    • canines-spear to pierce and wedge
    • premolars-chewing surface one cusp spears and the other chews it
  60. how is the tongue and cheek help with self cleansing?
    move food around
  61. how are pits and fissures self cleaning
    where food goes and gets washed away with saliva
  62. t/f food is softer now and we don't use our pits and fissures as much.
  63. t/f if food is hard it grinds down the teeth
  64. how does the curvatures help protect the periodontium? (4)
    • contours deflect food
    • prevents food impaction
    • promotes gingival stimulation
    • undercontoured tooth better than overcontoured tooth
  65. why is a undercontoured tooth better than an overcontoured tooth?
    cause gingival irritation (overhang) and will cause gum recession and bone loss