PRDS

1/2, 1/4, 2, 4, 6

• 6 flutes,
• decay removal,
• endo,
• create round internal form

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)

379F, 379 EF

Smooth concave surfaces

Smoothing lingual surfaces of anterior teeth

• EF = extra fine
• (finer diamond grits)

135F, 135EF

• Smooth convex or flat surfaces
• Making large bevels
• Removing excess composite filling material

132F

Making small bevels and refined cuts

247F, 247EF

• Adding in anatomy & detail on occlusal
• surfaces of composite
• Rounded internal angles
• Diamond burs do not create sharp internal line angles

8274

Cleaning out fine grooves on occlusal surfaces

835

Parallel smooth walls

Carbide 245, 330D

• Converging smooth walls
• Rounded internal angles

1169 L

• Diverging smooth walls
• NOT in kit

856

• Creates smooth gradual reduction
• Tapered cut
• Cutting extra-coronal preparations

NOT in kit

7404

Multi-fluted (12, 24, 30, spiral)

Finer cutting and polishing

(6 flutes – rough cutting)

Especially metal

Concentric, not eccentric

(Tungsten added to steel)

- Cuts clockwise

• -
• Sawing and chipping action

• -
• 6 flutes

• -
• Can dull easily

• -
• Strain hardens with use

• -
• Gets brittle easily

Then creates heat

• -
• Diamond particles are backed into nickel
• substrate

• -
• Diamond burs hardest

• -
• Abrade everything

• -
• Grits used and color

Diamond burs do not create sharp internal line angles