Answer please!! with explanation

[anusha]

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Generally, contact areas between posterior teeth are located in which directions from the center of the proximal surface?

A. Facially and occlusally
B. Facially and gingivally
C. Lingually and gingivally
D. Lingually and occlusally

And also someone please explain me how to answer question from picture movement with maxillary or mandibular teeth with it. How to know which cusp moves in which direction. I am really very confused with the right or left working side or non working side movement.

Thanks
Anusha

 

[Ranran]

Hi,
A is the correct answer

good luck

 

[anusha]

Thanks. Will you please tell me where do I find a good explanation for this?

 

[Dentstu]

Generally, contact areas between posterior teeth are located in which directions from the center of the proximal surface?

A. Facially and occlusally
B. Facially and gingivally
C. Lingually and gingivally
D. Lingually and occlusally

And also someone please explain me how to answer question from picture movement with maxillary or mandibular teeth with it. How to know which cusp moves in which direction. I am really very confused with the right or left working side or non working side movement.

Thanks
Anusha

Hi,

I have one more query about this question. Facially is okay, but how we can decide occlusally / gingivally, when contact area is in middle between posterior teeth.

Dentstu

 

[anusha]

Hi!

I am confused too but the question was from the ADA released exam. Any way thanks and I will think that I am not the only person to be confused with this dummy question.
Thanks

 

[sumanreddivari]

well his answer is correct, its facial n occlusal. i dont know where u can refer it but when u think practically its more of facial or buccal ( thats the reason sometimes u have to end up gicing reverse curve) and occlusal. take a good typhodont model n visualize. hope it helps

 

[cheekydent]

I suppose this is explained in the 2007 Dental anatomy decks itself.