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Questions and Answers
What type of shank is characterized by having bends but not many?
Which term describes shanks that enhance tactile sensitivity?
Which component of the working end features the cutting edge?
What characteristic is associated with complex shanks?
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What type of shank can be described as larger in diameter and able to withstand pressure?
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Which part of the working end is nearest to the handle?
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What micro-anatomical part is found in the middle section of the working end?
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Which aspect of shanks helps to remove heavy calculus effectively?
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Which working end feature is crucial for the performance of sickle instruments?
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What is the primary function of a working end's cutting edge?
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At which location can dental deposits often accumulate?
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What is one advantage of using instruments with a sharp cutting edge?
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Which factor does NOT determine the selection of an instrument?
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Which instrument is specifically designed to measure pocket depth?
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Which of the following statements is true regarding universal curettes?
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Which statement about the use of dental instruments is true?
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In periodontal assessment, which tool is most beneficial in measuring the depth of pockets?
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Which of the following best describes factors influencing instrument selection?
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What does a periodontal probe typically have on its working end?
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Which instrument is specifically designed for deposit removal?
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What is the significance of the design name on a periodontal instrument?
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Which feature is NOT typically associated with sickle instruments?
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What determines a universal design in periodontal instruments?
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Which aspect of a periodontal explorer is primarily for assessment purposes?
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What characteristic distinguishes a curette from a sickle?
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What is the main purpose of periodontal explorers in clinical practice?
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What is the shape of the cross-section of a sickle instrument?
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Which area is a sickle instrument primarily used for?
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What distinguishing feature differentiates universal curettes from sickles?
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How do the cutting edges of a universal curette differ from those of a sickle?
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What feature allows the universal curette to be used sub-gingivally?
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What is the main purpose of using a sickle instrument?
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Which of the following statements about sickle instruments is incorrect?
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What characteristic of sickles contributes to their effectiveness in removing calculus?
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What is the purpose of the Gracey 1/2 instrument in dental procedures?
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Which Gracey instrument is paired with the Gracey 11/12?
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Which of the following Gracey instruments has a larger shank designed for posterior teeth?
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What is characteristic of the Gracey 13/14's working end?
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Which Gracey instrument would be most appropriate for accessing the rounded surfaces of posterior teeth?
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Study Notes
Sickle Instruments
- Variety of sickles are available for supra-gingival use on the crown of teeth, not root surfaces.
- Sickles have two cutting edges that meet in a pointed tip.
- The back of a sickle is pointed and the cross-section is triangular.
- The cutting edge makes contact with the tooth surface at a 90-degree angle.
CureSe Instruments
- CureSes have a spoon-shaped working end with a rounded toe and back, used for both supra-gingival and sub-gingival use.
- Features allow for insertion into the sulcus or pocket without harming the gingival tissue.
- The cutting edges meet at a rounded toe.
- The cross-section of a CureSe is semi-circular.
Functional Shank
- The functional shank of an instrument is the part that extends from the first bend in the shank.
- The first bend of the instrument is nearest the handle while the second bend is nearest the working end.
Shanks
- Shanks can be simple or complex.
- Simple Shanks have few bends, are straight, and used for anterior teeth.
- Complex Shanks are curved, multi-rooted, and offer round bends that can access cusps.
Variability in Shanks
- Shanks can be standard or extended, and thin or thick.
- Thinner, standard shanks enhance tactile sensitivity.
- Larger, extended shanks offer greater strength to remove heavy calculus.
Working End
- The working end of an instrument is the most important part for removing calculus.
- Sickles have a triangular cross-section.
- CureSes have a round cross-section.
- Both CureSes and Sickles have a Toe, Middle, and Heel on the working end.
The Tip of the Working End
- The tip of the working end can be a CureSe or Sickle.
- CureSes and Sickles have both a cutting edge and a rounded side.
Instrument Stamping
- The stamping on a periodontal instrument can include the design name (e.g., Gracey) and the design number.
- The design name identifies the school or designer.
- The design number indicates the exact identification of the working end.
Periodontal Instruments
- Assessment instruments are used for measuring and examining tooth surfaces.
- Removal Instruments are used for removing calculus deposits.
- Periodontal probes are used for measuring pocket depth.
- Periodontal explorers are used for examining tooth surfaces and identifying calculus.
Gracey Instruments
- Gracey instruments are paired sets designed specifically for removing calculus from specific tooth surfaces.
- Each Gracey instrument has different features depending on its purpose.
Periodontal Instrument Advantages
- Sharp cutting edges allow calcified deposits to break off in smaller pieces, reducing the risk of burnished calculus.
Factors Determining Instrument Selection
- The quality and quantity of calculus
- Severity of periodontal involvement
- Root morphology and overall access
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Description
This quiz covers the various types of dental instruments, including sickles and curettes. It explains their design features, uses, and the structure of functional shanks. Perfect for students seeking to understand dental tools better.
