Sickle scalers: Sickle scalers are strong instruments that remove large calculus deposits. A sickle scaler 2 cutting edges per working end. Sickle scalers may be used on all aspects of the tooth crown, facial, lingual, mesial and distal. The working end is triangular in cross-section. Each of the lateral surfaces meets the face at an internal angle of 70 to 80 degree.
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