NADL Study guide

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Miyagi93940

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I am studying to take CDT exam this October. I am using the study guidebook for CDT. One of the question from the book was preferred crown prep for all-ceramics crown.
Their answer is knife-edge but I think it should be either shoulder or chamfer. Am I wrong? Isn't it knife-edge for gold crown on posterior restoration? I need your advise.
Thank you in advance. :)
 
sidesh0wb0b

sidesh0wb0b

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isnt shoulder margin indicated for most if not all restoration types nowadays?
for sure shoulder though. everything from all of the ceramics manufacturers indicates shoulder margins for all ceramic restorations.
 
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Miyagi93940

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That is what I thought. Some questions on the study guide book confuses me more than help. 😫

Have you taken CDT exam?
 
sidesh0wb0b

sidesh0wb0b

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That is what I thought. Some questions on the study guide book confuses me more than help. 😫

Have you taken CDT exam?
many many moons ago.
it was no better back then LOL
 
Contraluz

Contraluz

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I am studying to take CDT exam this October. I am using the study guidebook for CDT. One of the question from the book was preferred crown prep for all-ceramics crown.
Their answer is knife-edge but I think it should be either shoulder or chamfer. Am I wrong? Isn't it knife-edge for gold crown on posterior restoration? I need your advise.
Thank you in advance. :)
As Sidshowbob mentions, Knife edge is NOT indicated for All-Ceramics crowns, never was! Either shoulder or a good chamfer prep. Look at the prep guides of the various companies offering All-Ceramic restorative materials.
 
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