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Examen
RDH- Instrumentation exam questions and 100% correct answers 2025
During periodontal instrumentation, a face to tooth surface angulation of 40° will result in? 
a. Damage to surrounding tissues 
b. Damage to the root surface 
c. Calculus removal 
d. Burnish calculus - correct answer D. Burnish calculus 
 
The finger that serves as a support beam during calculus removal is the? 
A. Index finger 
B. Middle finger 
C. Ring finger 
D. Thumb - correct answer C. Ring finger 
 
Gracey curetes are accurately described as self angulated because when the lower shank ...