Post&Core,FPD

Question 1

What is the optimum crown:root ratio for an abutment tooth in a FPD? What is the MINIMUM?

Answer 1

optimum: 2:3….Minimum 1:1

Question 2

Which width is more ideal for an abutment tooth? Broader LabioLingually or Mesiodistally?

Answer 2

LabioLingually

Question 3

What is Ante’s law?

Answer 3

the ROOT SURFACE AREA of the abutment teeth in an FPD has to equal/surpass the SA the teeth replaced with pontics

Question 4

What is the preferred method for bridge connectors-rigid or non-rigid?

Answer 4

rigid!

Question 5

WHAT ARE THE MINIMUM DIMENSIONS for a rigid connector?

Answer 5

2.0 mm occluso-cervically….3.0mm Facial-Lingually

Question 6

Whats the normal height for a non-rigid connector?

Answer 6

3mm to 4mm height

Question 7

What is the minimum GAP needed for soldering?

Answer 7

0.25mm

Question 8

How do you quantify the gold content in the alloy being soldered?

Answer 8

In Carrots

Question 9

How do you quantify the gold content of a solder?

Answer 9

Fine

Question 10

What is the preferred method for WHEN to solder? Before or after the porcelain?

Answer 10

before

Question 11

How much space is between the ridge and the pontic in a sanitary pontic?

Answer 11

2mm

Question 12

What is the advantage to a modified sanitary pontic?

Answer 12

The arch makes a broader connection

Question 13

What is the main disadvantage to a ridge lap pontic design? What is another name for this design?

Answer 13

Saddle! Not cleanable…

Question 14

What is the most common pontic design in visible areas?

Answer 14

modified or “T” shaped ridge lap pontic

Question 15

What is the MOST esthetic pontic design?

Answer 15

ovate