Insturments Flashcards
How do we remove unsupported enamel?
with thin rotary instrument of hand instrument
What bur do we use for class II composite preparation?
small round or elongated pear bur or diamond
Which bur do we use for pinhole insertion?
¼ round bur or a pear shaped, held perpendicular to the pin
What bur do we use for class I composite preparation?
small round
or
elongated pear bur (for 90 degree cavosurface margins)
What bur do we use for retention grooves?
small round bur
What bur do we use for retention grooves on class V composite preparation?
small round bur
How to remove Hard Dentin?
a bur
or
a sharp cutting instrument
How is Soft Dentin excavated?
with hand and rotary instrumentation
Can we remove Firm Dentin with hand excavation?
resistant to hand excavation
How is Leathery Dentin excavated?
hand instruments without much pressure
How do you enter a class I, OL preparation?
cross cut fissure or small round or inverted cone bur
Which # of bur to use for class I?
245
Which # of bur to use for class II?
245
What tool do we use to break enamel to expose the proximal box?
spoon excavator
What do we use to remove remaining proximal enamel after exposing box?
exam**
Hand instruments
Small dimension burs
End cutting burs