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Dental anatomy ????????????????

Discussion in 'NBDE Exams & Licensure Exams' started by SPT, Feb 14, 2007.

  1. SPT

    SPT
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    hi


    was going through dental decks there are some confusing facts given

    " cornerstone" of permanent dentition - deck says mand. 1 molar
    - wheelers book says max. 1 molar


    shape of occlusal surface of mand. 1 molar- deck says pentagonal
    - wheelers says hexagonal



    any inputs?????????????/

    thanx
     
  2. Dental Dork 09

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    Decks agree with the ADA. This came up many times on old exam questions and the answer is pentagon.

    Reason is bec the 3 cusps on the buccal and not in alignment but the lingual cusps are.
     
  3. docasrpa

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    in kaplan shape of occlusal durface is..rectangular
    while...crown shape is pentagonal

    hope dis helps
     
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  4. OP
    OP
    SPT

    SPT
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    thank u for the answer guys:)
     
  5. starvr

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    " cornerstone" of permanent dentition - deck says mand. 1 molar
    - wheelers book says max. 1 molar

    Ans:I Molar(can be either maxillary or mandibular).
    First molars are considered as "cornerstone" of DENTAL ARCHES.The normal position of permanent first molar is at the center of fully developed adult jaw anteroposteriorly.
    Four canines are placed at the "corners" of the MOUTH, helps in maintaining natural facial expression.

    I think so,let me know.
     
  6. OP
    OP
    SPT

    SPT
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    one more question


    from developmental point mandibular molars have ( decks - 5 major cusp wheeler- 4 major)

    for maxillary molars( decks- 4 major cusps , wheeler - 3 major)

    any input??????????:confused:
     
  7. docasrpa

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    decks are right..i think so
     
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  8. jevi

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    decks are right and occlusion cornestone is mandibular 1st molar, it is the first permanent molar in eruption process, so the rest of teeth take position acording to him. I hope it helps
     

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