Lecture # 2 Bur block

Question 1

What is the 1557 carbide bur used for?

Answer 1

• Gross reduction

- Depth cuts

Question 2

What is the diameter of the 1557 carbide bur?

Answer 2

-1 mm

Question 3

How long is the flue of the 1557 carbide bur?

Answer 3

-4 mm

Question 4

What do you use a 170 carbide bur for?

Answer 4

• Retention grooves

- Anti-rotational grooves

Question 5

What do you use a 172 carbide bur for?

Answer 5

• Retention grooves

- Refinement of Isthmus and Proximal boxes

Question 6

What do you use a 1/4 round carbide bur for?

Answer 6

• Pilot hole for pins

- Retentive slots and groves

Question 7

What is the 6878K-012 Diamond bur used for?

Answer 7

• Breaking proximal contacts
• Light zirconia or gold chamfer
• Light veneer preparations

Question 8

What is the 6877K-018 diamond bur used for?

Answer 8

• Heavy chamfer

- Limited access

Question 9

What is the 6878K-018 Diamond used for?

Answer 9

• Most chamfers

- Occlusal refinement

Question 10

What is the 5856-016 Diamond used for?

Answer 10

-All ceramic axial refinement and rounded butt joint margin

Question 11

What is the 6845KR-018 Diamond used for?

Answer 11

• Posterior all ceramic onlays

- Broader butt joint margins

Question 12

What is the 6379-023 (football shaped) diamond used for?

Answer 12

• Lingual concavity

- Equilibration

Question 13

What is the 889-009 diamond used for?

Answer 13

• TIght spaces

- Rounding of line angles and point angles for all ceramic preparations

Question 14

What is the 8862-010 Diamond used for?

Answer 14

• Beveled margin creation with gold partial coverage preparations
• Fine grit
• interproximal