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Clinic Theory 1 Midterm Review Questions
and Correct Answers/ Latest Update /
Already Graded
Right Handed vs. Left Handed clock positions
Ans: RH:
8 o'clock = front of the patient
9 o'clock = side of the patient
10-11 o'clock = corner of headrest
12 o'clock = behind the patient
LH:
4 o'clock = front of the patient
3 o'clock = side of the patient
1-2 o'clock = corner of headrest
12 o'clock = behind the patient
Clinician positions
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Ans: -moves around the patient to maintain a neutral body
position
Neutral positioning
Ans: Neck:
-head tilt at 0 to 15 degrees
Back:
-leaning forward slightly from the waist or hips (0 to 2o
degrees)
Shoulders:
-shoulders even
Upper arm:
-elbows at waist level held slightly away from the body (0 to 20
degrees)
Forearm:
-parallel to the floor (60 to 100, 90 is ideal)
Hand:
-little finger- side of palm slightly lower than the thumb -side
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Ergonomics Do's and Don'ts
Ans: -dont alter position just to get the job done
-do assume a neutral, balanced body position
-do make adjustments to the patients chair and equipment
Choosing the right handle
Ans: Recommended
-lightweight handle
-large diameter
-tapered handle
-raised texturing (knurling pattern)
Supine (maxillary treatment areas)
Ans: -patients feet even with the tip of the nose
-chair back, nearly parallel to floor
Semi-supine (mandibular treatment areas)
Ans: -chair back raised slightly
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-patients head tilt= chin DOWN
Sickle
Ans: -limited to supragingival use
-traingular cross section
-pointed tip
Exploratory stroke
Ans: *aka assessment stroke*
-used to detect calculus deposits or other tooth surface
irregularities
-subgingival instrumentation relies on sense of touch to locate
calculus deposits beneath the gingival margin
"tactile sensitivity"
Explorer 11/12 Clock Positions
Ans: Anterior teeth
-divide anterior teeth at the midline
-surfaces away are at 12 o'clock and surfaces towards are at 8
o'clock
All rights reserved © 2025/ 2026 |
Clinic Theory 1 Midterm Review Questions
and Correct Answers/ Latest Update /
Already Graded
Right Handed vs. Left Handed clock positions
Ans: RH:
8 o'clock = front of the patient
9 o'clock = side of the patient
10-11 o'clock = corner of headrest
12 o'clock = behind the patient
LH:
4 o'clock = front of the patient
3 o'clock = side of the patient
1-2 o'clock = corner of headrest
12 o'clock = behind the patient
Clinician positions
All rights reserved © 2025/ 2026 |
, Page |2
Ans: -moves around the patient to maintain a neutral body
position
Neutral positioning
Ans: Neck:
-head tilt at 0 to 15 degrees
Back:
-leaning forward slightly from the waist or hips (0 to 2o
degrees)
Shoulders:
-shoulders even
Upper arm:
-elbows at waist level held slightly away from the body (0 to 20
degrees)
Forearm:
-parallel to the floor (60 to 100, 90 is ideal)
Hand:
-little finger- side of palm slightly lower than the thumb -side
All rights reserved © 2025/ 2026 |
, Page |3
Ergonomics Do's and Don'ts
Ans: -dont alter position just to get the job done
-do assume a neutral, balanced body position
-do make adjustments to the patients chair and equipment
Choosing the right handle
Ans: Recommended
-lightweight handle
-large diameter
-tapered handle
-raised texturing (knurling pattern)
Supine (maxillary treatment areas)
Ans: -patients feet even with the tip of the nose
-chair back, nearly parallel to floor
Semi-supine (mandibular treatment areas)
Ans: -chair back raised slightly
All rights reserved © 2025/ 2026 |
, Page |4
-patients head tilt= chin DOWN
Sickle
Ans: -limited to supragingival use
-traingular cross section
-pointed tip
Exploratory stroke
Ans: *aka assessment stroke*
-used to detect calculus deposits or other tooth surface
irregularities
-subgingival instrumentation relies on sense of touch to locate
calculus deposits beneath the gingival margin
"tactile sensitivity"
Explorer 11/12 Clock Positions
Ans: Anterior teeth
-divide anterior teeth at the midline
-surfaces away are at 12 o'clock and surfaces towards are at 8
o'clock
All rights reserved © 2025/ 2026 |
