06-Graceys curettes

Gracey Curets

What is a Gracy Curet?

• Designed as a area specific instrument• Lighter deposit removal• Root planing• Self-angulated at 70 degrees• Gracy Curets are designed for

subgingival debridement – rounded toeand back design

Gracey Curet Design

HandleShank

Blade

Terminal

Shank

Functional Shank

Long , functional shankRounded working endOne cutting edgeIdeal for root planing

Cutting Edge Relationship to Terminal Shank

• Face perpendicular to shank 90 degrees• 2 cutting edges

• Col13/14, McCalls 17/18

Universal Instruments Area Specific Instrument

• Face offset to shank 70 degrees• One cutting edge• Gracy curet

Gracey 11-12

Gracey 13-14

Cutting Edge Determination

o Terminal Shank perpendicular to flooro Lower edge is the cutting edge

TerminalShank

Cutting EdgeCutting Edge

Cutting EdgeDetermination

Gracey Curets• Gracey 11/12 – mesial surfaces of

posterior teeth• Gracey 13/14 – distal surfaces of

posterior teeth• Gracey ½ - anterior teeth (surfaces

away and surfaces towards theclinician)

Gracey 11/12

Gracey 11/12 Gracey 11/12Correct Working EndCorrect Working End

Mesial instrumentPosterior instrumentTerminal shank parallel to tooth long axis

Gracey 11/12Gracey 11/12 Mesial Mesial

G 11/12 G 13/14

13/14 Gracey Curet

• Distal instrument• Posterior instrument• Long shank for deep pockets• Angled functional shank posterior tooth access

Correct Working EndTerminal Shank parallel

Incorrect Working EndTerminal shank not parallel

Gracey 13/14 Distal InstrumentationGracey 13/14 Distal Instrumentation

G 11/12 G 13/14

Gracey 11/12 or 13/14 ?

Gracey ½ Curet

Maxillary and Mandibular Anterior Teeth

Gracy ½ Curet

Terminal shank is parallel to the long axis of the tooth.Fulcrum is next to the operative Tooth.

Gracey 1/2Mand. Anteriors(Surfaces Away)

flip instrument clinician moves from

back to front position

GraceyGracey 1/2 1/2 MandMand. . AnteriorsAnteriors(Surfaces Toward)(Surfaces Toward)

Terminal shank parallel tolong axis

Terminal shank parallelGracey 1/2

Curet Adaptation

AdaptationScaler vs Curet

Scaler

Curet

Angulation

0 degrees Optimal

60-80degrees

Greater than90 degrees

Less than45 degrees

Subgingival Debridement/RootSubgingival Debridement/Root Planing for Smooth Surfaces Planing for Smooth Surfaces

• Calculus on enamel generally snaps off in one piece• Subgingival calculus is shaved off

• Overlapping and multidirectional strokes

Stroke Direction

Vertical stroke Oblique stroke Horizontal Stroke

Thorough Root Debridement

Multidirectional stroke activation

A - horizontal B - diagonal or oblique C - vertical

A. B. C.

Curet options

Standard, after five (+3 mm to terminal shank),and mini five curettes (blade half length)

Many choices

Clinical cassettes

Detection instruments Debridement instruments