Exam 24: Hand-Activated Instruments

Which type of explorer is recommended for assessment of interproximal areas under the contact,for supragingival detection of caries on all crown surfaces and around restorations,and for caries and calculus detection in shallow sulci,but is not recommend for detecting calculus in deep periodontal pockets or for deep subgingival calculus detection?

When inserting a curet into a periodontal pocket,what is the ideal angle between the cutting edge of the blade of the instrument and the tooth?

All of the following are uses of the dental mirror except which one?

What degree of angulation should be established between the tooth surface and the cutting edge of the instrument blade when calculus is removed?

Instruments with short shanks are used in restricted areas,for example,posterior teeth,whereas instruments with long shanks are used in unrestricted areas of the mouth.

Which of the following scaling instruments is designed for subgingival calculus removal?

When one sharpens scaling instruments,why is the last stroke always downward from the face of the instrument?

What is the recommended pressure when a periodontal probe is used?

An area-specific curet has two straight flat blades that are not easily adapted to a curved tooth or root surface.The rounded smooth back of the working end of the area-specific curet aids in the placement of the instrument without trauma to the tissues.

A dental hygienist is scaling the posterior,mandibular right quadrant.Suddenly the tip of the working end of the instrument (13/14 area-specific curet)breaks.Which of the following is not an appropriate part of the initial tip-retrieval procedure?

Which of the following instruments is best designed for assessment of furcation involvement?

All of the following are valuable uses of the perioscope except which one?

Match the working ends of dental instruments. -Pointed toe and pointed back

A dental hygienist records a periodontal probe reading of 6-6-6 on the facial surface of tooth 8 and a clinical attachment level of 3-3-3.What would a competent dental hygienist conclude from these assessment data?

Match the working ends of dental instruments. -Fine,wirelike working end with a sharp point

What is the most effective method for identifying supragingival calculus?

Which of the following instrument designs is best used for accessing a deep periodontal pocket on the proximal surface of a maxillary permanent first molar?