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Pre-clinic.2

Perio Instruments

QuestionAnswer
Unpaired working-ends instrument with two dissimilar working-ends
Paired working-ends instrument with working-ends that are mirror images of each other
Instrument Identification Design Name, Design Number, Working-End Identification, Instrument Handles
Design Name school or person who designed instrument (for example: Gracey)
Design Number identifies the working-ends (example: 1 and 2)
Working-End Identification Number along HandleEach working-end is identified by the number closest to it.orNumber Across Handle•The first number (on the left) identifies the working-end at the top.•The second number is the working-end on the lower end of the handle.
Instrument Balance A periodontal instrument is balanced if the working-ends are aligned with the long axis of the handle.
Significance of Balance •Ensures that finger pressure applied against the handle is transferred to the working-end for calculus removal•An instrument that is not balanced is difficult to use and stresses the muscles of the hand.
Recommendation of choosing the right handle •Large diameter•Lightweight handle•Bumpy texturing
Simple shank Hold the instrument so that the working-end tip or toe is facing you- Simple shankwill appear to be straight for use on anterior teeth
Complex shank Hold the instrument so that the working-end tip or toe is facing you - Complex shankhas side-to-side bends Complex shanksfor use on posterior teeth
Allows you to reach the facial and lingual surfaces of the root of molar teeth. Front-to-back shank
Allows you to reach the mesial and distal surfaces of the root of molar teeth. Side-to-side bends of complex
Functional Shank Begins below the working-end, and extends to the last bend in the shank nearest the handle. (Look at picture on power pt)
Lower Shank The portion of the functional shank nearest to the working-end
What is the best Instrument for use on task of supragingival anterior teeth? Simple shank with short functional shank length
What is the best Instrument for use on task of —subgingival anterior teeth? Simple shank with long functional shank length
What is the best Instrument for use on task of supragingival posterior teeth? Complex shank with short functional shank length.
What is the best Instrument for use on task of subgingival posterior teeth? Complex shank with long functional shank length.
Extended Lower Shank Instruments with extended lower shanks can reach the middle-and apical-third of the root surface.
Parts of Working-End •Face•Back•Lateral surfaces•Cutting edges•Toe or tip
Look at power pt and identify pictures of parts of working-end .
Working-ends that are triangular in cross section limited to supragingival use.
Working-ends that are semi-circular in cross section may be used supragingivally and subgingivally.
Instruments with Triangular Cross Sections •Sickle scalers are instruments with triangular cross sections.•Sickle scalers are limited to supraggingival use.
Instruments with Semi-Circular Cross Section •Curets are instruments that are semi-circularin cross section.•Curets may be used supragingivally and subgingivally.
Created by: llgalby
 

 



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