G. Mod. 17 Universal Curets Flashcards
Universal curet
Periodontal instrument used to remove small and medium calculus deposits
“Universal”curets can be used both
Supra and sub
Crown and root
Anterior and posteriors
Design characteristics
Rounded back and toe
Semicircular cross section
2 cutting edges per WE
Face @ 90* angle to lower shank
=2 level cutting edges
Lower shank must tilt slightly toward tooth surface for
Correct Angulation
Short lower shank and working end
Columbia
Limited to use within normal sulci or shallow pockets
Longer shank and working end
Barnhart
Used on root surfaces with in deep pockets
Better choice for mesial and distal surfaces of molar teeth
Lower shank
Functional shank
Parallel
Up and over tooth
Inner cutting edge
Outer cutting edge
Closer to handle, used on distal surface
Farther from handle, used on facial lingual and mesial surfaces
Correct Angulation achieved by
Titling lower shank slightly toward tooth surface to be instrumented
70-80*
Approaching mesiofacial line angle make sure to ____ _____ to maintain adaptation
Keep toe third ____ against tooth surface
Roll handle
Locked
Adapting the working end to the facial and lingual root surfaces is challenging for 2 reasons:
1- hand may block view of Mandibular lingual surfaces
2-rounded posterior crowns make it difficult to place working end on root surfaces
Mandibular posterior lingual surfaces
-keep handle
As upright as possible!
With the handle in correct position the lower shank is not in contact with
The lower shank is not in contact with lingual or occlusal surfaces of the tooth crown
Universal Correct working end on anterior teeth
Lower shank across tooth
Universal curet=anterior across
Which cutting edge is used to instrument anterior teeth
Outer cutting edge (farther from handle)
