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In order to scale #30 subgingivally, the instruments should be present with design characteristics. Those design characteristics include
Complex shank with a long functional shank
An instrument that is flipped during patient treatment so the clinician can use the other end is a ______
Double-ended paired instrument
Stains are classified by:
Location and source
Mary is selecting the correct working end of a double-ended instrument for use on the distal surface of a posterior tooth. Mary will have selected the correct working end of ____.
The lower shank is parallel to the distal surface of the tooth
When exploring, you must use firm lateral pressure to ensure that you are able to detect calculus/
False
List the three-stroke directions for calculus removal
Horizontal, vertical, oblique
Which of the following instrument design characteristics causes increased muscle fatigue?
Small-diameter handles
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 correct angulation for a calculus removal stroke when using a universal curet is?
70-80 degrees
Explain the instrument's design differences between a sickle and a universal curet. Address the number of curing edges, design cross setion, working end design (toe/tip) for each instrument. Also, address if the instrument can be used supragingival or subgingival and why.
Sickle- 2 cutting edges, cross-section is a triangle, it forms a tip, is used supragingival because of the sharp tip could injure the gingiva if used subgingivally.
Universal curet- 2 cutting edges, semi-circle cross-section, forms at a toe, can be used both supragingival and subgingival. Most commonly used for patients with deeper pockets. Is used to remove supragingival light calculus. ---- area specific --- and the back, rounded back
The correct face to tooth surface angulation for the sickle scaler is?
70-80 degrees
Another name for the lower shank is the _____
Terminal shank
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
Rodney wants to explore a periodontal pocket on a molar tooth with a probing depth of 5mm. He should select an explorer with which of the following characteristics?
A long, complex shank design
The ideal angle for insertion of the universal curet is 0-40 degrees.
True
Give 2 examples of exogenous intrinsic stains
Amalgam, root canal, caries lesion, erosion
The two parts of the working end that form the cutting edges are the ______.
Face and lateral surface
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
The use of a sharp explorer to diagnose caries in pits and fissures by applying firm pressure into areas of suspected decay is recommended.
False
What are the 3 stroke directions that are used during instrumentation and create patterns referred to as crosshatch?
Horizontal, oblique, vertical ------- where is each one used
Paired working ends are working ends that are exact mirror images of each other. Some double-ended instruments have unpaired, dissimilar working ends.
Both statements are true
The cutting edges of a sickle scaler meet in a _____.
Point or tip
Annie has positioned the working end of a sickle scaler apical to the large supragingival calculus deposit. Which of the following is the recommended angulation for a calculus removal stroke with a sickle scaler?
70-80 degrees
The design characteristics of a universal curet include all of the following, except?
1 cutting edge per end
The orban 17/23 type of explorer would be ideal to explore the facial surface of #30F.
False