NBDE part II ASDA Q

[Domdoc]

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Can someone help me, I am taking NBDE part II in a couple of days. There are a few questions in ASDA papers regarding prediction of arc discrenpancy. Can someone tell me how to solve this type of questions. For ex: Lower incisor cum width:22mm , canine and premolar at 75% : 22.6,computer amount of arc space available :63mm. What degree of arc discrepancy is predicted? Ans is "mild crowding".. Can someone tell me how to find this out? Thanks a lot.

 

[ddspcds]

Add the the total measurement of lower incisors and canine and premolars #2 ( as they give the measurement as 75% , which is of one side hence calculate the canine and premolars two times). In this situation
63- 22+(22.6*2) = 63 -67.2
= -4.2
So, Mild crowding

 

[Domdoc]

Got it. Thank you!