Instrument Sharpening Flashcards
Objective of instrument sharpening
preserve original shape of the instrument
a sharp instrument is…
essential to prevent tissue trauma during scaling and root planning
benefits of sharp instruments
decrease working time b/c fewer strokes
increase tactile sensitivity
greater control of the instrument
decrease possibility of burnishing calculus rather than removing calculus
decrease unnecessary trauma therefore decrease patient discomfort
decrease possibility of nicking, scratching or grooving tooth surfaces
decrease clinician fatigue
[artificial materials] hard non-metallic substances are impregnated with
al-oxide, silicone carbide, or diamond particles (ex. ruby stones and diamond hone)
steel alloys
tungsten carbide steel used with neivert whittler
2 categories of stone
manual (unmounted) sharpening
mandrel mounted cylindrical straight or tapered
a sharp instrument
does not reflect light
a dull instrument
has a rounded shiny surface that easily reflects light
manual (unmouted) sharpening
stationary flat stone
hand stone–> cylindrical
neivert whittler
used to test sharpness
a testing stick or ping
use of testing stick or ping
if sharp will catch the stick
if dull will slide across stick
test entire cutting edge for sharpness
dry–>
sharpen stone without lubricant
water on stone–>
ceramic stones can be sued dry or with water
which stone needs sharpening oil
Arkansas stone
lubricated stone
prevents scratching of the stone
suspends particles so they don’t clog the stone
