INSTRUMENTS
QN Schwartz periotriever To remove broken instrument from gingival sulcus

PROBES
 Technique – walking the probe
 Force applied – 0.25 N*
 Most common – Williams probe
 Missing pts on probe – 4 and 6
 WHO probe
o Tip diameter of 0.5mm
o Black marking for 3.5 and 5.5 mm
o Used in CPIT index America
o Light weight
 Most common for furcation – Nabers probe
 Pressure sensitive probe – FOSAT – MILLER PROBE
o RECORDS – CEJ

SCALER
 Supra gingival scaling
 Short, powerful pull motion
 After scaling and root planning, healing happens by long junctional epithelium
 TYPES
o Piezoelectric,
o Magnetostrictive*
This scaler is used with elliptical motion **
o Sonic,
o Ultrasonic

CURETTE
 Subgingival scaling
 Root planning
 Long, light pull motion
UNIVERSAL CURRETTE
 Two cutting edge
 Not area specific
 90°
 Blade of a pdl instrument should be perpendicular to the shank****
 Shank should be parallel to the tooth surface, but blade/cutting edge should be perpendicular ok?

GRACEY CURETTE
 One cutting edge
 Area specific
 70° or offset
 #11 #12 mesial surface of posterior
 #13 #14 distal surface of posterior

 All currettes (gracey/universal) are semi – circular in cross section
 Best angulation of activation of any perio instrument - 70° (45°- 90°)
 Angulation : the relationship b/w the instrument blade and the tooth surface
 The part of instrument that should be parallel during calculus removal is the shank **