-
Round Bur
1/2, 1/4, 2, 4, 6
- 6 flutes,
- decay removal,
- endo,
- create round internal form
-
Inverted cone
34D
- - Most important cutting bur
- - Short head height allows interproximal cut w/o damaging adjacent teeth
- - Creates undercuts
Diamond creates rounded internal line angles (cuts)
-
Egg
379F, 379 EF
Smooth concave surfaces
Smoothing lingual surfaces of anterior teeth
- EF = extra fine
- (finer diamond grits)
-
Needle
135F, 135EF
- Smooth convex or flat surfaces
- Making large bevels
- Removing excess composite filling material
-
Needle Tip
132F
Making small bevels and refined cuts
-
Pencil shaped
247F, 247EF
- Adding in anatomy & detail on occlusal
- surfaces of composite
- Rounded internal angles
- Diamond burs do not create sharp internal line angles
-
Fissurotomy
8274
Cleaning out fine grooves on occlusal surfaces
-
Cylinder
835
Parallel smooth walls
-
Pear
Carbide 245, 330D
- Converging smooth walls
- Rounded internal angles
-
Tapered
1169 L
- Diverging smooth walls
- NOT in kit
-
Tapered Chamfer
856
- Creates smooth gradual reduction
- Tapered cut
- Cutting extra-coronal preparations
NOT in kit
-
Multi-fluted
7404
Multi-fluted (12, 24, 30, spiral)
Finer cutting and polishing
(6 flutes – rough cutting)
Especially metal
-
Bur rotation
Concentric, not eccentric
-
Carbide charateristics
(Tungsten added to steel)
- Cuts clockwise
- -
- Sawing and chipping action
- -
- Strain hardens with use
Then creates heat
-
Diamond
- -
- Diamond particles are backed into nickel
- substrate
Diamond burs do not create sharp internal line angles
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