Exam Question

[AlphaOmega2]

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I am now studing for an exam doing previous exams sample questions.
One of the question goes like this:

You discover on your patient five caries. On your treatment program you are doing an amalgam restoration on a lower first molar in the oclusion class I. After you cleaned the caries the marginal ridge thats left is only 1mm. What do you do?

1)You change the treatment plan and you do a composite restoration
2)You take out the marginal rigde thats left and you do a class I with modifications
3)You take out the marginal rigde thats left and you do a class II
4)You keep on and do the amalgam.


So, what do you think the answer is?

 

[crazy_sherm]

For a molar, you want to ideally have 1.5mm of marginal ridge left when you have finished your prep because you don't want to have unsupported enamel. So the answer would probably be #3.

However, in real life, you would probably do #4.

 

[aphistis]

I am now studing for an exam doing previous exams sample questions.
One of the question goes like this:

You discover on your patient five caries. On your treatment program you are doing an amalgam restoration on a lower first molar in the oclusion class I. After you cleaned the caries the marginal ridge thats left is only 1mm. What do you do?

1)You change the treatment plan and you do a composite restoration
2)You take out the marginal rigde thats left and you do a class I with modifications
3)You take out the marginal rigde thats left and you do a class II
4)You keep on and do the amalgam.


So, what do you think the answer is?

1mm is a very thin shell of enamel, especially when you're talking about molar marginal ridges and the amount of force they're exposed to. Taking out the ridge, and incorporating it into your restoration (i.e., #3), is much more likely to yield favorable long-term results.

If you place a class II, you get an extra $50 and you have a happy patient with a durable restoration. If you try to leave that little nibble of enamel behind, not only do you not get the additional fee, you'll also probably end up redoing as a class II in three months when the ridge fractures off and the patient complains about getting food stuck in the now-open contact, but now you're doing it for free.

 

[rhodz27]

I am now studing for an exam doing previous exams sample questions.
One of the question goes like this:

You discover on your patient five caries. On your treatment program you are doing an amalgam restoration on a lower first molar in the oclusion class I. After you cleaned the caries the marginal ridge thats left is only 1mm. What do you do?

1)You change the treatment plan and you do a composite restoration
2)You take out the marginal rigde thats left and you do a class I with modifications
3)You take out the marginal rigde thats left and you do a class II
4)You keep on and do the amalgam.


So, what do you think the answer is?

"
2)You take out the marginal rigde thats left and you do a class I with modifications

 

[lotexigeus]

#3 imo

 

[Beestieboy]

+1 for #3

 

[beannaithe]

#3, this is what an instructor had me do in clinic.