mand mov

[drkooks]

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in decks:
in working side movement, MB cusp of max second molar passes through facial groove of mand second molar,do u think this is true?

i would say it pass through the lingual groove ..as the MB cusp of max first molar pass through li groove of mand first molar in working side mov ...
pls correct me if i am wrong

 

[charlestweed]

I think the dental deck is correct! MB cusp of upper 2nd molar passes through facial grooves of lower 2nd molar. And the movement is the same for 1st molar.

It is the ML cusp (not the MB cusp) of the upper molar that will pass through the lingual groove of mandibular molar on the working side.

 

[dr.rex]

being a guiding cusp it would have to cross the whole tooth before it got to the lingual groove

 

[drkooks]

yes u are right... sorry ..i was confused...