Clinical Dh Tech Week 5 - Lab Ppts - Sickles And Curets

Front 1

Sickle Scaler:

To Use and NOT To Use

Back 1

• A periodontal instrument used to remove calculus deposits from the ​crowns of the teeth

• Should NOT be used on root surfaces

Front 2

Sickle Scaler

Unique Design Characteristics:

Tip / Cross Section / Cutting Edge

Back 2

• Pointed tip and back
• Triangular in cross section
• Two cutting edges per working-end

Front 3

Sickle Scaler

Unique Design Characteristics:

Face to Handle

Back 3

• The face of a sickle scaler is perpendicular (90 degrees) to the lower shank.

Front 4

Sickle Scalers:

Anterior and Posterior Designs

Back 4

• Anterior Sickles - often single-ended; may have two different sickle ends on double-ended instruments

• Posterior Sickles - usually two sickles paired on a double-ended instrument; working ends are mirror images

Front 5

Sickle Scalers:

Uses

Back 5

• Removal of medium- to large-sized supragingival calculus deposits

• NOT recommended for use on root surfaces

Front 6

Anterior Sickle Scaler:

Establishing Angulation

Back 6

• The face of the working-end is at a 90-degree angle to the lower shank
• Positioning the lower shank parallel to the tooth surface creats an incorrect face-to-tooth angulation of 90-degrees.
• Correct angulation is achieved by tilting the lower shank toward the tooth surface to create a correct face-to-tooth surface angulation of 70-80 degrees.

Front 7

Anterior Sickle Scaler:

Application of Cutting Edges

Steps to Scaling the Anterior Teeth

Back 7

• FACIAL - Cutting edge 1 = toward, cutting edge 2 = away
• LINGUAL - Cutting edge 1= away, cutting edge 2 = toward

• Start at midline of tooth and work toward cole.
• Scale all surface toward or all surfaces away
• Make sure to keep 2mm tip adapted and at 70-80-degree angle
• Use short, controlled strokes

Front 8

Posterior Sickle Scaler:

What should you remember

to help select the correct end?

Back 8

• Posterior - Parallel
• Anterior - Across

• If the shank is down, you'll wear a frown :(

Front 9

Posterior Sickle Scaler:

4 cutting edges for molar

Back 9

Front 10

Posterior Sickle Scaler:

Shank positioning and Scaling sequence

Back 10

Front 11

What should you always remember

before you begin instrumenting?

Back 11

"Me, My patient, My light, My instrument, My fulcrum, My adaptation"

Front 12

Primary Teeth:

How are they different for scaling?

Size and Texture

Back 12

• Smaller size of primary crowns present challenges for instrumentation
• Primary crowns have Rougher Enamel surfaces and CementoEnamel Junctions

Front 13

Primary Teeth:

What Sickle should be used on

Anterior Teeth?

Back 13

Smaller, thin anterior sickle: Nevi 1

Front 14

Primary Teeth:

What Sickle should be used on

Posterior Teeth?

Back 14

Thin, Curved Working-End: Nevi 3

Front 15

Universal Curet:

Definition

Back 15

• A periodontal instrument used to remove small- and medium-sized calculus deposits from the crowns and roots of the teeth
• Universal = anterior and posterior teeth

Front 16

Universal Curet

Unique Design Characteristics:

Toe / Cross Section / Cutting Edge

Back 16

• Rounded back and toe
• Semicircular in cross section
• Two cutting edges per working-end

Front 17

Universal Curet

Unique Design Characteristics:

Face to Handle

Back 17

• The face of a sickle scaler is perpendicular (90 degrees) to the lower shank.
• The two cutting edges are level with one another.

Front 18

Universal Curet

Uses

Back 18

• Universal curets can be used to remove small- to medium size calculus deposits
• Supra and Subgingival use

Front 19

Universal Curet:

Columbia vs Barnhart

Lower shank and Working-end

Back 19

• Columbia 13-14 - short lower shank and working end
• Barnhart 5-6 - long lower shank and working end

Front 20

Universal Curet:

Columbia 13-14

Lower shank and Use

Back 20

• short lower shank and working end
• Limited to normal sulci or shallow pockets
• It does not reach the midline of mesial and distal surfaces of posterior molars, missed calculus

Front 21

Universal Curet:

Barnhart 5-6

Lower shank and Use

Back 21

• Long lower shank and working end
• Used on root surfaces within deep pockets
• A better choice for the mesial and distal surfaces of molar teeth, no missed calculus

Front 22

Universal Curet:

What should you remember

to help select the correct end?

Back 22

• Posterior - Parallel
• Anterior - Across

• If the shank is down, you'll wear a frown :(

Front 23

Universal Curet:

4 cutting edges for molar

Back 23

Front 24

Universal Curet:

Where should the face and toe be when

inserting beneath the gingiva margin?

Back 24

• The face should hug the tooth surface (0-degree angulation), toe should point in the direction being scaled

Front 25

Universal Curets

Horizontal Stroke:

What is the horizontal stroke

extremely effective at?

Back 25

• Extremely effective in removing calculus deposits at line angles and midlines.

Front 26

Universal Curets

Horizontal stroke:

Steps for Posterior Line Angles

Back 26

• Lower handle position
• Insert working-end slightly distal to the distofacial line angle
• Keep handle lowered
• Make short controlled strokes around line angle

Front 27

Universal Curets

Horizontal Stroke:

Steps for Anterior Midline

Back 27

• Lower handle position
• Insert working-end just distal to midline
• Keep handle lowered
• Make short controlled strokes across midline

Front 28

Universal Curets

Handle Position

Back 28

• Keep the handle as upright as possible
• This keeps the shank from hitting the crown
• Helps you better adapt the working end not just the toe

• DO NOT tilt the handle toward you

Front 29

Universal Curets

Position on Anterior Teeth

Which cutting edge is used

Back 29

Anterior = Accross

Outer Edge = On

Front 30

Gracey Curets

What is special about Gracey Curets?

Back 30

• Gracey curets are area spacific.
• They are used for removing light calculus deposits from the crowns and roots of teeth.

Front 31

Gracey Curets

What type of shank and

what is it suited for?

Back 31

• Gracey curets have long, complex functional shanks
• Especially suited for instrumentation of root surfaces

Front 32

Gracey Curets

How is the toe different

from universal curets?

Back 32

• The cutting edges are curved and do NOT parallel the shank

Front 33

Gracey Curets

How is the face

in relation to the shank?

Back 33

• Face is tilted (70 detrees) in relation to the lower shank
• one cutting edge is lower thank the other on each working-end

Front 34

Gracey Curets

What is different about

the cutting edges?

Back 34

• the lower edge is used to remove calculus and is called the working cutting edge
• the higher edge is not used and is called the nonworking cutting edge

Front 35

Gracey Curets

How is the cutting edge angulated?

Back 35

• The lower cutting edge is automatically at a 70-degree angle to the tooth when the lower shank is parallel

Front 36

Gracey Curets

What is important to remember about the lower cutting edge on a Gracey?

Back 36

• When looking directly at the toe, the working cutting edge is closer to the floor
• Only the lower cutting edge needs to be sharpened on an area-specific curet.