Curettes Clinical Application Guide
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Hu-Friedy Universal and Gracey Curettes - Clinical Application Guide

Hu-Friedy Universal and Gracey Curettes - Clinical Application Guide

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  • 1. Curettes Clinical Application Guide
  • 2. Curettes
    • In this tutorial you will learn:
      • Types of curettes
      • Curette blade designs
      • Curette instrumentation
      • Clinical uses of curettes
  • 3. Types of Curettes
    • A curette is a type of scaler that is designed for moderate calculus removal on supragingival and subgingival surfaces.
    • Types of Curettes:
      • Universal
      • Area Specific (Gracey)
    • All curettes share the same common elements:
      • Rounded back
      • Rounded toe
      • Semi-circular cross section
  • 4. Curettes Universal Curettes
  • 5. Universal Curettes
    • Universal curettes are designed for easy adaptation on all tooth surfaces (thus the name “universal”).
  • 6. Universal Curettes
    • The blade of a universal curette has a round toe and back, and two cutting edges for scaling, making it an efficient design for scaling the entire mouth.
    Toe Face Cutting Edge Lateral Side Back 90 °
  • 7. Universal Instrumentation
    • The blade is correctly adapted when the toe is directed interproximally and the terminal shank is parallel to the tooth.
    • To remove deposits, the cutting edge is applied to the tooth surface and the facial surface of the blade is tilted toward the tooth to achieve a 70-85 ° angle between the tooth and the blade.
    • Apply lateral pressure against the tooth and pull upward while maintaining contact with the tooth.
    Pull Stroke Lateral Pressure 70-85 °
  • 8. Anterior Universal
    • To scale the facial surfaces, place the toe of the blade toward the proximal surface with the handle parallel to the tooth.
    • Apply strokes to remove deposits from the midline of the tooth to the proximal surface.
    • Work from canine to canine.
    • Switch working ends and repeat for surfaces away from you.
    • Repeat all of the above for the lingual surfaces.
    SBH5/67
  • 9. Universal Curettes
    • Anterior Universal Instrumentation Sequence
  • 10. Posterior Universal
    • Begin at the distal line angle of the most posterior tooth.
    • Direct the toe of the blade toward the distal with the terminal shank angled slightly toward the tooth.
    • Apply strokes from the line angle to the contact area.
    • Next, turn the toe toward the mesial to scale the buccal and mesial surfaces.
    • Continue this sequence to complete the posterior region.
    • Switch ends and repeat from the lingual aspect.
  • 11. Posterior Universal Posterior Universal Instrumentation Sequence SC4R/4L6
  • 12. Curettes Area Specific (Gracey) Curettes
  • 13. Gracey Curettes
    • In the early 1940’s, Dr. Clayton Gracey and Hu-Friedy introduced a set of instruments designed to be used on specific tooth surfaces that improve adaptation and deposit removal.
    • The Gracey “area specific” designs have laid the groundwork for the new instruments of today.
    • Today, the Gracey Curette family of instruments give clinicians many options for their treatment needs.
  • 14. Gracey Curettes
    • The Gracey blade design is offset from the terminal shank at 70°.
    • This creates one cutting edge which is referred to as the lower edge.
    Back Face Toe Cutting Edge Lateral Side °
  • 15. Gracey Instrumentation
    • The blade of a Gracey Curette is correctly adapted when the lower cutting edge is against the tooth and the terminal shank is parallel to the tooth surface being scaled.
    • Apply lateral pressure against the tooth (root) and pull upward, maintaining the parallel shank.
    Pull Stroke Lateral Pressure 70 °
  • 16. Gracey Curettes
    • The shank design is different for each Gracey pattern.
  • 17. Gracey Curettes
    • Gracey Curettes are available in:
      • Standard
      • Rigid
      • After Five
      • Mini Five
    The following slides will explain each of these in more detail.
  • 18. Standard Gracey Curettes
    • Gracey Curettes are area specific to allow for deep scaling, root planing and periodontal debridement.
    • The offset blade provides a perfect working angulation for the tooth surface.
    • Gracey Curettes are used in a set to completely scale the dentition.
  • 19. Gracey Design Comparisons * The 17/18 is a unique pattern, having a longer terminal shank and slightly shorter blade, so no AF or MF are available. 1/2, 3/4, 5/6, 7/8, 11/12, 15/16, 13/14 Decreased by 10% Decreased by 50% Longer terminal shank, increased diameter Rigid Mini Five SAS#/#R 1/2, 3/4, 5/6, 7/8, 11/12, 15/16, 13/14 Decreased by 10% Decreased by 50% Longer terminal shank, standard diameter Mini Five SAS#/# 1/2, 3/4, 5/6, 7/8, 11/12, 15/16, 13/14 Decreased by 10% Standard Longer terminal shank, increased diameter Rigid After Five SRPG#/#R 1/2, 3/4, 5/6, 7/8, 11/12, 15/16, 13/14 Decreased by 10% Standard Longer terminal shank, standard diameter After Five SRPG#/# 1/2, 3/4, 5/6, 7/8, 9/10, 11/12, 15/16, 13/14, 17/18* Standard Standard Standard design, increased shank diameter Rigid SGR#/#R 1/2, 3/4, 5/6, 7/8, 9/10, 11/12, 15/16, 13/14, 17/18* Standard Standard Standard Standard (Finishing) SG#/# Available Patterns & Areas of Use (Chart on next slide) Blade Width Blade Length Shank Design and Diameter
  • 20. Gracey Chart
  • 21. Standard Gracey Curettes 7/8 11/12 15/16 17/18
  • 22. Rigid Gracey Curettes
    • All Gracey designs are available with a wider taper – rigid shank.
    • The rigid shank may be preferred for heavier calculus removal.
    • Although the shank is wider, the blade width is the same as the standard Gracey.
    Standard Rigid
  • 23. After Five ® Gracey Curettes
    • Designed for instrumentation in deeper periodontal pockets.
    • The terminal shank is elongated 3mm to provide better clearance around crowns, and superior access to root contours and pockets 5mm or more in depth.
    • Blade thinned by 10% to ease gingival insertion and reduce tissue distention.
    3mm
  • 24. Gracey After Five Curettes
    • The change in the location of the shank bend permits deeper insertion into periodontal pockets. The thinned blade allows for easier insertion.
    SRPG11/12
  • 25. Mini Five ® Curettes
    • Designed with the same elongated terminal shank and thinned blades as the After Five Gracey Curettes.
    • 50% shorter blade for access to smaller roots, narrow pockets, furcations, and developmental grooves.
    Standard After Five Mini Five 3mm
  • 26. Gracey Mini Five Curettes
    • Mini Five reaching into a deep pocket on a narrow root.
    SAS1/2
  • 27. Hu-Friedy Curettes
    • Hu-Friedy offers an array of curettes.
    • Many designs are available with different handle options and in Hu-Friedy’s EverEdge Technology.
    • Please refer to the Hu-Friedy catalog at www.hu-friedy.com for more information on all the curettes available.
  • 28. Qualifying Question
    • Thank you for taking the time to learn more about the clinical applications of curettes .
    • To earn your Hu-Points towards a product evaluation, please exit and answer the following question on the Member Resources Page:
    • The After Five Gracey Curette has a terminal shank ___ longer and a blade thinned____ than a Standard Gracey Curette.
    • 3mm, 10%
    • 3mm, 15%
    • 4mm, 10%
    • 4mm, 15%
    • 5mm, 15%