RANDOM
A clinician is experiencing muscle strain in his fingers and wrist. Which of the following would be most likely to reduce strain to the clinician’s fingers and wrist?
Large-diameter handle with raised texturing
Another name for the lower shank is the _____
Terminal shank
Rolling the instrument between the thumb and index finger aids the clinician in maintaining the adaptation of the working end to the tooth surface. It is easier to roll the instrument handle if the thumb and index finger are overlapped on the handle.
The first statement is true; the second statement is false
Lisa is adapting the middle third of the working end of a sickle scaler to the facial midline of a mandibular anterior tooth. This adaptation would most likely be:
Incorrect, because the tip-third would likely injure gingival tissue
[A] is the primary risk factor for gingivitis, caries, and periodontal disease.
Dental biofilm
A clinician is holding an instrument so that the tip of the working end is facing him. With the instrument in this position, the functional shank is bent from side to side. The clinician’s instrument has
A complex shank design
The two parts of the working end that form the cutting edges are the ______.
Face and lateral surface
List 2 ways you can clinically detect calculus.
visually, explore, radiographs, air, mirror, transillumination
For successful instrumentation, correct adaptation of the working end must be maintained throughout the instrumentation stroke. Incorrect adaptation can result in injury to gingival tissue
Both statements are true
Working strokes should not be made in a rapid manner because:
Faster pace makes control more difficult
An instrument designed for supragingival use on posterior teeth would have a ______
Complex shank design with a short functional shank length
The cutting edges of a sickle scaler meet in a _____.
Point or tip
When you begin a working stroke, you should press down with your fulcrum finger against the tooth. Instrumentation strokes are tiny movements, you move the working end only a few millimeters with each stroke.
Both statements are true
Teri is removing calculus deposits located above the gingival margin of a mandibular anterior tooth. As she works around the tooth, her instrument cuts the soft tissues of the gingiva. Which of the following is the most likely cause of tissue trauma?
Adapting the middle-third of the working-end to the tooth
The hand pivot is a movement used during instrumentation to ____
Maintain adaptation of the working end of the instrument as it moves around the tooth
An instrument that is flipped during patient treatment so the clinician can use the other end is a ______
Double-ended paired instrument
A classmate complains of muscle pain in his fingers after a clinic session in which he was removing calculus deposits with hand-activated instruments. Which of the following techniques is most likely the cause of his muscle strain?
Using digital activation with the instrument
Which of the following is not a recommended instrumentation technique when removing calculus with a hand-activated instrument?
Moving the instrument by flexing the fingers
To maintain adaptation to a curved surface, the clinician needs to do all of the following except:
Use the modified pen grasp with digital motion
Which of the following instrument design characteristics causes increased muscle fatigue?
Small-diameter handles
Instrumentation strokes are usually large movements to cover as much of the tooth surface as possible. During a working stroke for calculus removal, it is best to keep the ring finger (fulcrum) in a curved, relaxed position.
Both statements are false
The hand pivot is a movement used during instrumentation to ____
Maintain adaptation of the working end of the instrument as it moves around the tooth
To establish correct adaptation with a sickle scaler to the distal surface of a molar, the clinician should do which of the following?
Place the tip-third of the scaler against the tooth