dental anatomy

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Author:
sweetpea281
ID:
41824
Filename:
dental anatomy
Updated:
2010-10-13 00:16:26
Tags:
premolars
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Description:
premolar characteristics
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  1. what is the eruption date for the maxillary 1st premolars?
    10-11 years
  2. what is the eruption date for the maxillary 2nd premolars?
    10-12 years
  3. what is the eruption date for mandibular 1st premolars?
    10-12 years
  4. what is the eruption date of the mandibular 2nd premolars?
    10-12 years
  5. when is maxillary 1st premolar root completion?
    12-13 years
  6. when is maxillary 2nd premolars root completion?
    12-14 years
  7. when is mandibular 1st premolars root completion?
    12-13years
  8. when is mandibular 2nd premolars root completion?
    13-14 years
  9. what are three distinguishing features for the maxillary 1st premolars?
    • larger than 2nd
    • mesial concavity extends to root
    • mesial marginal groove
  10. what are two distinguishing features for the maxillary 2nd premolars?
    • buccal and lingual cusps are nearly the same height
    • occlusal anatomy is more variable than 1st
  11. what are three distinguishing features for the mandibular 1st premolars
    • large buccal cusp; small afunctional lingual cusp
    • mesiolingual developmental groove
    • well developed marginal ridges
  12. what is one distinguishing feature of the mandibular 2nd premolars..explain
    • 2 forms
    • 2 cusps-45%
    • 3 cusps-55%
  13. what is the crown shape of the maxillary 1st premolar?
    hexagon
  14. what is the crown shape of them maxillary 2nd premolars
    round/ovoid
  15. what is the crown shape of the mandibular 1st premolars
    diamond
  16. what is the crown shape of the mandibular 2nd premolar?
    • 2cusp-heart
    • 3cusp-square
  17. what are 4 ways to distinguish right from left for the maxillary 1st premolars?
    • mesially displaced lingual cusp
    • mesial concavity
    • mesial marginal groove
    • mesial cusp slope is longer than distal cusp slow on buccal cusp
  18. what are 2 was to distinguish right from left on the maxillary 2nd premolars
    • lingual cusp displaced toward mesial
    • root distally curved
  19. what are three ways to distinguish right from left on the mandibular 1st premolar?
    • mesial cusp shorter than distal
    • distal margin more rounded
    • root curves to distal
  20. what are two ways to distinguish right from left on the mandibular 2nd premolar?
    • 2cusp-lingual cusp shifts mesially
    • 3cusp-ML cusp larger
  21. how many roots does the maxillary 1st premolar have?
    2 roots 80%
  22. how many roots does the maxillary 2nd premolar have?
    single rooted
  23. how many roots does the mandibular 1st premolar have?
    single rooted
  24. how many roots does the mandibular 2nd premolar have?
    single rooted
  25. what is a characteristic of the mandibular 1st premolars root?
    distal groove
  26. what are two characteristics of the mandibular 2nd premolars roots?
    • proximal root concavities
    • blunt apex
  27. what are the clinical considerations for the maxillary 1st and 2nd premolars?
    sinusities
  28. what is the clinical consideration for the mandibular 1st premolars?
    snake eyes-sillver fillings in deep occlusal fossae
  29. what are the clinical considerations for the mandibular 2nd premolar?
    congenitally mission 2nd to the maxillary lateral incisors and 3rd molars

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