D) Universal curet is the instrument that involves one continuous cutting edge around the face because that the two sides are united without interruption by the rounded toe.
Universal curettes are designed in a way that makes it possible to adapt one instrument to all tooth surfaces by enabling the use of both cutting edges on each blade. Universal curettes are particularly designed for the removal of moderate to heavy calculus from all supra- and subgingival tooth surfaces. Universal curettes types of instruments contain one continuous cutting edge around the face to make the two sides united without interruption by the rounded toe.
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Complete question is:
which of the following instruments has one continuous cutting edge around the face because the two sides are united without interruption by the rounded toe?
A) Curved scaler
B) Sickle scaler
C) Straight scaler
D) Universal curet
E) Area-specific curet
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