Sickle Scalers

How many cutting edges meet at a pointed tip to form the blade of a sickle scaler?

2

What is the shape of the sickle scaler blade in cross section?

Triangle

The face of the instrument forms what angle to terminal shank?

90°

The internal angles of the sickle scaler are what?

70-80°

For what two tooth surfaces do we use a sickle scaler on?

Mesial and distal

For which type of calculus would a sickle scaler remove?

Supra and subgingival

True/false: Sickle scalers cannot be used on posterior and anterior teeth.

False

True/false: You can use sickle scalers only on adults.

False

What instrument is not recommended for permanent molars?

204 SD

Which instrument is a smaller version of the IUFW 204?

204 SD

For which teeth is the Nevi 1/H5 used for?

Anterior teeth

For what surface(s) is the Nevi 1/H5 used for?

Mesials and distals

Which instrument is best for deposit removal in tight interproximal spaces?

Nevi 3

Which instrument is best for the removal of burnished and tenacious deposits because of its increased shank rigidity?

Nevi 4

True/false: You will find yourself fulcruming closer on the mandibular arch than with the maxillary arch

False

Between what knuckles should the instrument rest in?

2nd and 3rd

True/false: You should use the side of the cutting edge and not the point of the tip to scale.

True

What should the terminal shank be parallel to when scaling?

Long axis of tooth

What should the tip of the instrument be pointed towards?

Apex of root

Adapt face of blade approximately ___ to tooth surface being scaled.

80°

What is the ideal angle range for instertion?

0-45°

What is the ideal angulation for calculus removal?

60-80°