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Pre-clinic.11

Universal Curets

QuestionAnswer
Primary functions of Universal Curet •used to remove small-and medium-sized calculus deposits •debridement of the crown and root surfaces
Application of universal curet? Universal use-one double-ended instrument can be used on both anterior and posterior teeth.
Describe the working end. •A rounded back and toe •Two cutting edges per working-end
Describe the cross section and uses of the universal curet Cross section is semicircular: this design allows it to be used Supragingival and subgingival
Where is a Curet that has a shorter lower shank used? •Is limited to use within normal sulci or shallow pockets
Where is a Curet that has a longer lower shank used? on root surfaces within deep pockets
T/F The working-end of Curet with a short in length is good for posterior teeth? False •It does not reach the midline of the mesial and distal surfaces of posterior molars, thus calculus will be missed
Where are Curets with a longer lower shank and longer working-ends designed to be used? in periodontal pockets and for the proximal surfaces of posterior teeth.
What are two methods that can be used to pick the correct working-end for use on a tooth surface of posterior teeth? •Method 1 Lower Shank as Visual •Method 2 Inner and Outer Cutting Edges
What is the procedure of using the inner & outer cutting edges to determine the correct working end of posterior teeth? •Hold the instrument so that you are looking down at the face. •Determine which cutting edge is closer to the handle.
Where are inner cuttting edges used? on distal surfaces
Where are Outer cutting edges used? on facial, lingual and mesial surfaces •Think: “I start in on the distal surface, then move out to the facial and mesial.”
What is the proper Angulation for curet? 70-to 80-Degree Face-to-Tooth Surface Angulation
Where is the face in proportion to the lower shank? perpendicular to the lower shank (90-degree angle). Therefore the two cutting edges on a working end are level w/ one another.
T/F For correct Positioning the lower shank should be parallel to the tooth surface at an angulations 90-degrees. False it should be @ 70-80 degree angle
How do you achieve Correct angulation? Because the face is perpendicular to the lower shank you tilt the lower shank toward the tooth surface
Where should the Toe of working-end “point”? toward the surface you are working toward
T/F Face should hug the tooth surface True
T/F you should use the tip-third on the tooth surface? False •Lock the toe-third to the tooth surface.
T/F universal curet is not a good choice when working on mandibular anterior teeth? False It is good for working on mandibular anterior teeth because The complex shank design of a universal curet, sometimes facilitates access to the lingual root surfaces of mandibular anterior teeth.
How do you choose the correct working-end of universal curet for anterior teeth? Use face as visual clue 1st way-•The instrument face Of the correct working end tilts toward the tooth surface and the face is partially hidden from view 2nd pick the outer cutting edge that is further from the handle
Where is the get ready zone when working on posterior teeth? Distofacial line & work to distal the insert @ distofacial line & work toward mesial
Where is the get ready zone when working on anterior teeth? the midline.
Name common areas beginning clinicians often miss calculus deposits. 1.Distofacial and distolingual line angles of posterior teeth 2.The Midlines of facial and lingual surfaces of anterior teeth
Describe the cutting edges. Two parallel cutting edges meet in a rounded toe.
When the working-end is adapted to the distal surface, the correct working-end has the following relationship between the shank and the tooth: • Lower shank is parallel to the distal surface • Functional shank goes up and over the tooth POSTERIOR = PARALLEL FUNCTIONAL SHANK UP & OVER!
Name the Design Characteristics. *rounded back *rounded toe *semicircular in cross section *two cutting edges per working end *face is @ 90 degree angle to lower shank so the 2 cutting edges are level w/one another.
Advantages *can be used both anteriorly & posteriorly *can be used supra & subgingivally
Created by: llgalby
 

 



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