Periodontics Single-Ended Instruments

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Questions and Answers

What is a primary function of instruments with extended lower shanks?

They can access the middle- and apical-third of the root surface. (correct)
They are only suitable for use on the coronal surface.
They replace the need for single-ended instruments.
They are designed for surface cleaning only.

Which characteristic must be determined to classify a shank?

The type of handle material.
The thickness of the instrument blade.
The color of the instrument coating.
Whether the shank is simple or complex. (correct)

Which element is NOT a recognized characteristic of the shank?

Functional shank.
Shank flexibility.
Shank length variation. (correct)
Extended lower shank.

What type of instruments are periodontal instruments like periodontal probes classified as?

Single-ended instruments. (D) Signup and view all the answers

What primary function does the lower shank of a periodontal instrument serve?

To facilitate access to different areas of the root. (C) Signup and view all the answers

What is the primary purpose of a periodontal probe?

Evaluating the health of periodontal tissues (A) Signup and view all the answers

What design characteristic differentiates a sickle scaler from other periodontal instruments?

Triangular cross section (B) Signup and view all the answers

Which instrument is best suited for removing large calculus deposits?

Periodontal file (A) Signup and view all the answers

What type of cross section does an explorer have?

Circular (B) Signup and view all the answers

What feature distinguishes a curet?

Rounded toe (C) Signup and view all the answers

In the context of periodontal instruments, what does an instrument's design primarily influence?

The function of the working-end (D) Signup and view all the answers

Which of the following statements is true regarding sickle scalers?

They have a pointed back. (A) Signup and view all the answers

What is the main function of a curet in periodontal treatment?

Removing calculus deposits (B) Signup and view all the answers

What is a defining characteristic of the working-end of a sickle scaler?

Triangular and pointed (B) Signup and view all the answers

What is NOT a use for a periodontal explorer?

Evaluating periodontal tissue health (C) Signup and view all the answers

What type of shank is most suitable for removing heavy calculus deposits?

Rigid shank (A) Signup and view all the answers

Which characteristic of a flexible shank enhances tactile feedback for the clinician?

Vibration transmission (A) Signup and view all the answers

What is the definition of the functional shank?

The portion that helps to adapt the working-end to the tooth (B) Signup and view all the answers

For which use is a simple shank with a long functional length designed?

Subgingival use on anterior teeth (A) Signup and view all the answers

Which of the following statements about the lower shank is accurate?

It is also known as the terminal shank. (B) Signup and view all the answers

What type of instrument is preferred when working on subgingival areas of posterior teeth?

Complex shank with long functional length (A) Signup and view all the answers

What is the primary reason for using a flexible shank during dental procedures?

To enhance tactile sensitivity (C) Signup and view all the answers

In the context of dental instruments, what does 'extended lower shank' refer to?

A longer version of the lower shank for deeper pockets (C) Signup and view all the answers

Which of the following is true regarding vibrations and flexible shank instruments?

Vibrations are created from the working-end during use. (D) Signup and view all the answers

What distinguishes the functional shank from the lower shank?

The functional shank extends from the working-end to the last bend. (A) Signup and view all the answers

What is a key characteristic of ergonomic instrument design?

Prevention of musculoskeletal injury (D) Signup and view all the answers

Which handle design characteristic helps reduce the risk of carpal tunnel syndrome?

Larger handle diameter (B) Signup and view all the answers

Which handle design should be avoided to prevent strain during instrumentation?

Small diameter handle (B) Signup and view all the answers

How is a periodontal instrument considered balanced?

If the working-ends are aligned with the long axis of the handle (B) Signup and view all the answers

Which type of handle texture is recommended for optimal grip?

Raised texturing (C) Signup and view all the answers

What is the effect of larger handle diameters on instrument handling?

Requires less pinch force (D) Signup and view all the answers

Why is a tapered handle design preferred in periodontal instruments?

Enhances maneuverability during use (C) Signup and view all the answers

Which of the following is a risk factor associated with repetitive use of poorly designed instruments?

Carpal tunnel syndrome (B) Signup and view all the answers

What can be a consequence of using a heavy, solid metal handle in instruments?

Increases risk of musculoskeletal injury (A) Signup and view all the answers

What factors should be considered when evaluating instrument handle design?

Weight, diameter, taper, and texture (C) Signup and view all the answers

What does it mean for an instrument to be balanced?

The working ends are aligned with the midline of the handle. (A) Signup and view all the answers

What is one significant effect of using an unbalanced instrument?

It increases the difficulty of use and stresses hand and arm muscles. (B) Signup and view all the answers

How does instrument balance affect the removal of calculus?

It ensures that finger pressure is effectively transferred to the working-end. (D) Signup and view all the answers

What characteristic significantly impacts an instrument's usability and user comfort?

The thickness of the instrument handle. (D) Signup and view all the answers

Why are shanks of periodontal instruments designed with bends?

To facilitate the placement of the working-end against the tooth surface. (A) Signup and view all the answers

Which of the following statements about instrument handles is true?

Different handle designs can affect the ease of instrument use. (B) Signup and view all the answers

What is the primary function of the lower shank portion of an instrument?

To support the functional portion of the instrument. (D) Signup and view all the answers

Which design feature contributes to the flexibility of a periodontal instrument shank?

The introduction of simple or complex bends in the design. (A) Signup and view all the answers

Flashcards

Extended Lower Shank Function

Access middle and apical root surfaces.

Shank Classification Factor

Simple or Complex.