Indirect Restorations
  Metal-Ceramic (PFM) Crown Prep. Upper 1st Premolar

Metal-ceramic crowns are also known as "Porcelain Fused to Metal" (PFM) crowns. Where porcelain is needed, extra reduction must be undertaken to make room for both metal and ceramic.

In places where porcelain is not needed, for example the palatal margin, less reduction is done.

Slide show: Metal-Ceramic Crown Prep. Upper 4.

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17/25 


Why should you avoid sharp angles when preparing a crown?
 

What is "convergence" in this context?
 

What is the ideal convergence angle. And what is clinically achievable and acceptable?
 

What are the problems of over-tapered and under-tapered preparations?
 

Educational aims of this juce

 This page aims to show how to prepare an upper pre-molar to receive a metal-ceramic (PFM) crown.
 There is a step-by-step picture series that shows how to undertake this procedure.
Full instructions are given for every stage of the procedure.
You will be asked questions, and given model answers, about some aspects of the preparation.
Great for competency tests and examinations!

This page contains verifiable CE / CPD



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