Module 17- Universal Curets

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Module 17—Universal Curets

Section 3Technique Practice—Posterior Teeth

Copyright © 2017 Wolters Kluwer • All Rights Reserved

Posterior Sextants

Use of a Universal Curet

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Topics

-Choosing the correct working-end-Establishing angulation-Step-by-step use of a universal curet on the posterior teeth

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Choosing the Correct Working-End

Double-Ended Universal Curet

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Two Working-Ends

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Methods

There are two methods that can be used to pick the correct working-end for use on a tooth surface.It does not matter which method you use.Use the one that is easiest for you!

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Method 1

Lower Shank as Visual Clue

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Procedure

Establish a finger rest.Place the working-end in the Get Ready Zone of the distal surface. Use the lower shank as a visual clue.

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Lower Shank as Visual Clue

-Lower shank is parallel to the distal surface-Functional shank goes up and over the tooth

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Incorrect Working-End

-Lower shank not parallel-Functional shank is down and around the tooth

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Memory Aid

Think: “Posterior = Parallel”Functional shank up and over

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Method 2

Inner and Outer Cutting Edges

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Procedure

Hold the instrument so that you are looking down at the face.Determine which cutting edge is closer to the handle.

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Identify the Cutting Edges

Because of the bend in the shank, one cutting edge is closer to the handle.Which one?

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Identify the Cutting Edges (cont.)

Inner = closer to handleOuter = farther from handle

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Cutting Edge Use

Inner cutting edges: used on distal surfacesOuter cutting edges: used on facial, lingual, and mesial surfaces

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Memory Aid

Think: “I start in on the distal surface, then move out to the facial and mesial.”

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Establishing Angulation

70- to 80-degree face-to-tooth surface angulation

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Design Alert

The face of the working-end is perpendicular to the lower shank.

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Impact of Design

Positioning the lower shank parallel to the tooth surface creates an incorrect face-to-tooth surface angulation of 90 degrees.

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Correct Angulation

Correct angulation is achieved by tilting the lower shank toward the tooth surface. In this position the face-to-tooth surface angulation is between 70 and 80 degrees.

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Incorrect Angulation


Correct Angulation


Application of Cutting Edges

Universal Curet Posterior Sextant

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Working-End Application

Two working-ends and four cutting edges

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Application of Cutting Edges

Cutting edges applied to mandibular first molar and posterior sextant

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Step-by-Step Technique

Universal Curet Posterior Sextant

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Always One Step at a Time

Remember: “Me, My patient, My light, My mirror, My grasp, My finger rest, My adaptation”

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Sequence: Area 1

-From distofacial line angle back and halfway across the distal surface

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Step 1

Place the working-end in the Get Ready Zone near the distofacial line angle.-Toe of working-end “points” toward the distal surface

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Step 2

-Lower handle-Gently insert beneath the gingival margin-Face should hug the tooth surface

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Step 3

-Establish angulation-Lock the toe-third to the tooth surface-Make strokes around the line angle and halfway across the distal surface

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Technique Check

The face should be at a 70- to 80-degree angle to the distal surface.

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Sequence: Area 2

-Distofacial line angle forward for the facial and mesial surfaces

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Step 4

Place the working-end in the Get Ready Zone near the line angle on the facial surface.-Toe “points” forward

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Step 5

Make sure that the face hugs the tooth surface.Gently insert the working-end beneath the gingival margin.

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Step 6

Work across the facial surface.Roll the handle as you approach the mesiofacial line angle.

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Technique Check

Be sure to extend your strokes past the midline of the mesial surface of the tooth.


Sequence for Sextant

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Maxillary posterior sextant

Universal Curets

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Step 1

-Turn toe toward distal surface-Establish 0-degree angulation and insert

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Step 2

-Establish angulation-Lock the toe-third to the tooth surface

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Step 3

Make strokes around the line angle and halfway across the distal surface.

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Step 4

Place the working-end in the Get Ready Zone near the line angle on the facial surface.-Toe “points” forward

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Step 5

-Work across the facial surface-Roll handle as you approach the mesiofacial line angle

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Step 6

-Work from the mesiofacial line angle to the midline of the mesial surface

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RecapRemember sequence of steps for calculus removal.Use visual clues to select the correct working-end of a universal curet for a posterior sextant.

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Module 17- Universal Curets

Education