Instrument Sharpening PDF

Instrument Sharpening How do I keep my instruments sharp without ruining them? Who in the office is responsible for instrument sharpening? Hygienist You end up pushing harder with a dull instrument Manural sharpening is a method of choice Manual sharpening will NOT reduce blade unnecessarily by rapid...

Instrument Sharpening How do I keep my instruments sharp without ruining them? Who in the office is responsible for instrument sharpening? Hygienist You end up pushing harder with a dull instrument Manural sharpening is a method of choice Manual sharpening will NOT reduce blade unnecessarily by rapid cuAng mounBng stone. Use a palm and thumb grasp for sharpening Techniques o Preserve original contour of the blade o Sharpen frequently to prevent need for excessive recontouring of the blade o Toes need to be rounded o Correct cuAng angulaBon is 110 degrees (Gleason guide creates this 110 degrees) § Less than 110: Most common error, creates sharpness initially but dulls rapidly. Difficult to restore to correct angle § Greater than 110: creates weak edge. Premature dulling and decreased life of instrument Sickle have two cuAng edges CureTes (Universal and Gracey) o Spoon-Shaped Blade o Rounded Tip o Subgingival Scaling and Root Planing. o Universal CureTes § Two cuAng edges § Blade is parallel to the floor (blade is straight) § Top angle: 90 degrees o Gracey curettes § One cutting edge § Blade parallel to the floor (blade at outer convex) § Top angle: 70 degrees Tips for Keeping Instruments Sharp Pick best sharpener for job Get angle right Enhance your vision Store instruments properly Purchase instruments that stay sharp longer (American Eagle never need sharpening) Different types of Sharpening Tools Stones RotaBng wheels Stones w Guides Cordless sharpener: Sidekick Sharpener from Hu-Friedy o Maintains scalers and cure@es o Compact, powered unit features an oscillaAng sharpening stone to restore o Out-of-the-box sharpness with minimal effort o Guide channels and verBcal backstops control blade angulaBon for consistent results every Bme o Includes § Sharpening unit § Ceramic stone § PlasBc test sBck § Magnifying lens § Two AA baTeries § instrucBons with One year warranty. Gleason guide: 1. Back of blade against stop 2. Terminal shank down to rest 3. Glide Heel to toe 4. create a full stroke Gracey CureTes = one cuAng edge o Blade parallel to the floor or long axis of tooth (blade at outer convex) o CuAng edge: outer convex o Blade divided into three segments § Lower one-third: terminal few millimeters adjacent to toe § Middle one-third § Upper one-third: adjacent to the shank. o Blade AngulaBon § 0 degrees: correct angulation for blade insertion. § 45–90 degrees: correct angulation for scaling and root planing. § < 45 degrees: incorrect angulation for scaling and root planing. o Stroke direcBons: Lateral pressure acBvated in the coronal direcBon § Vertical: removes calculus § Oblique § Horizontal o Design of Gracey § Standard Gracey o Increase in ‘bends’ as you move posteriorly § Gracey #15-16 (new) o Mesioposterior surfaces o Combines Gracey #11-12 blade with a Gracey #13-14 shank § After Five Gracey o Extra 3 mm long terminal shank o Deeper insertion and better access § Mini Five Gracey o Half the length of standard o Increased access and reduced tissue trauma o For tight anterior pockets o Used with a straight VERTICAL stroke o Standard and After Five cannot be inserted vertically