Periodontal Instruments: Sharpening Techniques

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Questions and Answers

What is the primary purpose of applying a lubricant, such as water, to a sharpening stone during instrument sharpening?

To harden the metal of the instrument, making it easier to sharpen.
To help prevent metal shavings from adhering to the stone, reducing its effectiveness. (correct)
To disinfect the instrument and the sharpening stone simultaneously.
To increase the friction between the instrument and the stone for faster sharpening.

Which of the following best describes the correct method for caring for sharpening stones after use?

Clean the stone with disinfectant wipes and store in a sealed container.
Clean the stone with an ultrasonic scaler or scrub with a brush and hot water, dry it on a paper towel and sterilize it in an autoclave bag or instrument cassette. (correct)
Air dry the stone and store it in a drawer to protect it from dust.
Soak the stone in oil overnight to maintain its lubrication and then wrap in a cloth.

What is the potential consequence of not maintaining the original contours (rounded backs and toes) when sharpening curettes?

The instrument will become too flexible and break easily.
The instrument's cutting edge will become too sharp, increasing the risk of tissue damage.
The instrument handle will become unbalanced, making it difficult to control.
The instrument may lose its effectiveness in accessing and removing subgingival calculus, and may cause tissue trauma. (correct)

What can result from improper sharpening techniques that flatten the cutting edge of a dental instrument?

Reduced cutting efficiency and difficulty in removing calculus. (B) Signup and view all the answers

What is the purpose of finishing sharpening strokes with a downward motion?

To prevent the formation of metal burs on the cutting edge. (C) Signup and view all the answers

In the 'clock system', what relative positions would a right-handed clinician typically use to sharpen sickles and universal curettes?

Between 10:00 and 11:00. (B) Signup and view all the answers

Why is it important to sterilize sharpening stones after cleaning?

To prevent cross-contamination and maintain asepsis. (A) Signup and view all the answers

During lateral surface sharpening, what should the table top be positioned to?

The face of the instrument should be parallel with the surface (C) Signup and view all the answers

Which action helps to prevent metal spurs from remaining on an instrument after sharpening?

Finishing with a downward stroke. (D) Signup and view all the answers

When assessing an instrument to determine if it should be sharpened or replaced, what factor is MOST critical?

The amount of metal that has been removed during previous sharpenings, potentially altering its original shape and function. (D) Signup and view all the answers

What is the primary goal when sharpening periodontal instruments?

To restore a sharp cutting edge while preserving the instrument's original design. (C) Signup and view all the answers

Why does using sharp instruments reduce clinician fatigue?

Sharp instruments require fewer strokes and less pressure, reducing physical strain. (A) Signup and view all the answers

What is the primary difference between a sharp cutting edge and a dull cutting edge on a periodontal instrument?

A sharp cutting edge is extremely thin and forms a fine line, while a dull edge is rounded. (A) Signup and view all the answers

When evaluating the sharpness of a periodontal instrument, what conditions are optimal for assessment?

Magnification and bright light are useful, as well as being present and focused. (A) Signup and view all the answers

What contributes to the blunting of a periodontal instrument's cutting edge during use?

Contact with hard tooth surfaces, causing the metal edge to wear away. (B) Signup and view all the answers

Which of the following is a direct benefit of using sharp periodontal instruments during treatment?

Enhanced tactile sensitivity and precision during calculus removal. (B) Signup and view all the answers

What is one key consideration for clinician when sharpening?

To remove minimal metal from the instrument during the sharpening process. (B) Signup and view all the answers

What term describes the technique used to verify instrument sharpness during a procedure, involving assessment of the instrument's ability to 'catch' or engage the calculus?

The 'Light and Bite'. (B) Signup and view all the answers

Why is maintaining the original characteristics of a periodontal instrument important during sharpening?

Preserving the original shape ensures the instrument continues to function as intended. (A) Signup and view all the answers

Which of the following is LEAST likely to be achieved through regular instrument sharpening?

Complete prevention of instrument wear. (D) Signup and view all the answers

Flashcards

Benefits of Sharp Instruments

Using sharp instruments reduces the number of strokes needed, increases patient comfort, reduces clinician fatigue, enhances detection, is less traumatic, and maintains the instrument.

Sharp Cutting Edge

A sharp cutting edge allows for effective and efficient removal of calculus and biofilm.