ETT 3

Question 1

Crown preparation requires?

Answer 1

1. 2-plane facial reduction
2. Cervical axial wall parallel to tooth long axis
3. Positive horizontal stop
4. Clearance in MI position and excursive movements

Question 2

Steps of Direct CPC?

Answer 2

Post space preparation -> Crown prep -> Refinement of coronal tooth sturcture -> Select burnout post -> Pattern fabrication -> Investing and casting -> CPC cementation -> Crown prep refinement

Question 3

Burnout Post for Direct CPC have?

Answer 3

Serrations

Question 4

Burnout Post for Indirect CPC does not have?

Answer 4

Serrations

Question 5

Steps of Indirect CPC?

Answer 5

Post-space preparation -> Crown prep -> Impression -> Select burnout post -> Pattern fabrication on stone model -> Investing and casting -> CPC cementation -> Crown prep refinement

Question 6

Steps for Provisionalisation of CPC

Answer 6

1. Putty shell
2. PMMA into putty, core the shell

OR

1. Polycarbonate shells, core the shell

Question 7

What cements to use for CPC Cementation?

Answer 7

1. Zn phosphate
2. Resin cement