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Stains are classified by:
Location and source
The instrument shank is the part of the periodontal instrument that
Allows the working end to be positioned on the tooth root
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
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
Positioning the first 1-2 mm of the working-end’s lateral surface in contact with the tooth is a definition for which of the following?
Adaption
The handle is the part of a periodontal instrument that ______
Is used for holding the instrument
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 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
Working strokes should not be made in a rapid manner because:
Faster pace makes control more difficult
Give 2 examples of exogenous intrinsic stains
Amalgam, root canal, caries lesion, erosion
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
The cutting edges of a sickle scaler meet in a _____.
Point or tip
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
Jolene is selecting the correct working end of a double-ended instrument for use on the distal surface of a posterior tooth. Jolene will have selected the correct working end if ______.
The lower shank is parallel to the distal surface of the tooth
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
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
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
To establish correct angulation with a sickle scaler to the distal surface of a molar, the clinician should do which of the following?
Observe the relationship between the distal surface of the molar and the lower shank of the instrument; the lower shank should be tilted slightly toward the distal surface
[A] is the primary risk factor for gingivitis, caries, and periodontal disease.
Dental biofilm
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
Which of the following instrument design characteristics causes increased muscle fatigue?
Small-diameter handles
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
Stains are classified by:
Location and source