Clinical Dh Tech Week 5- Sickles And Curets

Front 1

What categories of sickles and curets do we use?

Back 1

• Sickle Scalers
• Universal Curets
• Gracey Curets

Front 2

What are the 3 components of an instrument?

Back 2

• Handle - Size, Diameter, Weight, Pattern
• Shank - Allows access to specific teeth
• Working end - Shaped for supragingival, subgingival, or both

Front 3

What are the components of the shank?

Back 3

• Functional shank - Begins below the working-end and extends to the last bend in the shank near the handle

• Working end - the portion of the functional shank nearest to the working-end and is also termed the terminal shank

Front 4

How are extended shanks different than standard shanks?

Back 4

• Extended shanks are 3mm longer than standard for working in deep periodontal pockets

Front 5

Shank Design:

Simple shank w/ short functional length

Back 5

Use: Supragingival use on anterior teeth

Front 6

Shank Design:

Simple shank w/ long functional length

Back 6

Use: Subgingival use on anterior teeth

Front 7

Shank Design:

Complex shank w/ short functional length

Back 7

Use: Supragingival use on posterior teeth

Front 8

Shank Design:

Complex Shank w/ long functional length

Back 8

Use: Subgingival use on posterior teeth

Front 9

How are anterior and posterior

sickle scalers different?

Back 9

• Anterior sickles

- Limited to use on anterior sextants

- Not recommended for use on root surfaces

• Posterior sickles

- Designed for use on posterior sextants

- May also be used on anterior teeth

Front 10

What is the design of the sickle scaler?

Back 10

• Pointed back
• Pointed tip
• Triangular cross section
• Two cutting edges
• Face is perpendicular (90 degrees) to the lower shank requiring the shank to be tilted toward the tooth surface when instrumenting.

Front 11

What are the uses of a sickle scaler?

Back 11

• Removal of small, medium, and large-sized supragingival calculus deposits
• Most commonly used for proximal surfaces of anterior crowns
• Posterior sickles most often used to remove supragingival calculus from buccal and lingual surfaces of posterior crowns

Front 12

Characteristics

Sickle Scaler Designs We Use:

Nevi 1: Sickle End

Back 12

• Sickle-end of the Nevi 1 instrument
• Rigid shank
• small, thin sickle
• Use on coronal surfaces of anterior teeth

Front 13

Characteristics

Sickle Scaler Designs We Use:

Nevi 1: Disk End

Back 13

• Disk-end of the Nevi 1 instrument
• All surfaces are sharp on the disk-end
• Supragingival use on lingual surfaces of anterior teeth ( mainly for stain removal)

Front 14

Characteristics

Sickle Scaler Designs We Use:

Nevi 2

Back 14

• Paired, mirror-image working-ends
• Thin, curved sickle for use on posterior teeth
• Long cutting edge facilitates access to proximal tooth surfaces
• Use on coronal surfaces of posterior teeth

Front 15

Characteristics

Sickle Scaler Designs We Use:

S204S: Double-Ended Sickle

Back 15

• S204S Double-ended Sickle
• Good for removing moderate to heavy ledges of supragingival calculus on line angles, buccal, and lingual sufaces of posterior teeth
• Can be used on anterior ledges as well

Front 16

Design of the Universal Curet

Back 16

• Rounded back
• Rounded toe
• Semicircular in cross section
• Two cutting edges
• Face is perpendicular (90 degrees) to the lower shank
• Usually double-ended with paired, mirror-image working end

Front 17

Uses of the Universal Curet

Back 17

• Can be used on both anterior and posterior teeth
• Used to debride both crown and root surfaces
• used to remove small and medium sized calculus deposits

Front 18

Universal Curets We Use

Back 18

• Columbia 13/14
• Barnhart 5/6
• Columbia 4R/4L
• Langer 3L/4R

Front 19

Design of the Area-Specific Curet

Back 19

• Periodontal instruments used to remove light calculus deposits from the crowns and roots.
• Face is NOT perpendicular (70 degrees) to lower shank
• Area-specific = designed for use only on certain teeth and root surfaces
• Only the lower cutting edge is used

Front 20

Periodontal Debridement:

Definition and Goal

Back 20

• The removal or disruption of bacterial plaque, its products, and plaque retentive calculus deposits from coronal surfaces, root surfaces, and within the pocket.

• The goal is to reestablish the health and balance between the bacterial flora and the host's immune responses.

Front 21

Curettage:

Definition

Back 21

• The removal of necrotic tissue from the gingival portion of a sulcus using a curet.

Front 22

What must be considered when

selecting an instrument for scaling?

Back 22

• Teeth to be instrumented

- Anterior

- Posterior

- Crowns or roots (how far subgingival)

• Supra or Subgingival calculus
• Characteristics of calculus to be removed

- Light, moderate

- Heavy

- Tenacious

Front 23

Current Focus - Primary Areas:

Anterior sickle scalers

Posterior sickle scalers

Columbia 13/14 universal curet

Barnhart 5/6 universal curet

Back 23

• Anterior supra
• Anterior and posterior supra
• Premolar supra and sub
• Molar supra and sub