module 2-clinician position in relation to the treatment area

Copyright © 2017 Wolters Kluwer • All Rights ReservedCopyright © 2014 Wolters Kluwer • All Rights Reserved

Module 2—Clinician Position in Relation to the

Treatment Area

Section 1Clock Positions for Instrumentation

Copyright © 2017 Wolters Kluwer • All Rights Reserved

Clinician Position

During instrumentation the clinician moves around the patient to maintain a neutral body position.Use the face of an analog clock as a guide to identify the clinician’s position in relation to the patient’s head.

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Clock Positions

Using an analog clock face as a guide: The patient’s head is at 12 o’clock. The patient’s feet are at 6 o’clock.

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Range of Positions

Instrumentation of the various treatment areas may be accomplished from a range of clinician positions in relation to the patient’s head.

-Right-handed clinicians sit from 8 to 1 o’clock

-Left-handed clinicians sit from 11 to 4 o’clock

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Patient Head Position

The patient’s head position should facilitate neutral arm, wrist, and hand position for the clinician.

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Right-Handed Clinician

Clock Positions

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8:00—To the Front of the Patient

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9:00—To the Side of the Patient

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10–11:00—Corner of Headrest

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12:00—Behind the Patient

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Left-Handed Clinician

Clock Positions

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3–4:00—To the Front of the Patient

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3:00—To the Side of the Patient

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12:00—Behind the Patient

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Summary: Clock Positions

During instrumentation the clinician sits in a range of positions in relation to the patient’s head.These positions are named in reference to the hands on an analog clock face.

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Treatment Area

Section 2Positioning for the RIGHT-Handed Clinician


Positioning for Anterior Sextants

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Recommended Clock Position

-Reduces musculoskeletal stress because the clinician can maintain neutral positioning-Provides optimal vision of the tooth surfaces during instrumentation

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Divide Tooth at Midline

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Halves of an Anterior Tooth

Surface TOWARD the clinician

Surface AWAY FROM the clinician

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Right-Handed Clinician

Anterior Sextants

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Anterior surfaces toward right-handed clinician are shaded in yellow

Clock position for clinician ranges from 8 to 9 o’clock

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Anterior surfaces away from right-handed clinician are shaded in purple


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Skill Building

When practicing positioning, use this reminder sequence:“Me, My Patient, My Light, My Nondominant Hand, My Dominant Hand”

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Left-Handed Clinician

Anterior Sextants

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Anterior surfaces toward left-handed clinician are shaded in yellow


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Anterior surfaces away from left-handed clinician are shaded in purple


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Summary-For periodontal instrumentation of anterior teeth, each tooth is divided in half at the midline

-Correct positioning of the seated clinician in relation to the treatment area facilitates neutral position and provides optimal vision

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Treatment Area

Section 4 Modified Positioning: Working from a

Standing Position


Analyze the positions shown in these slides.

Practical Focus

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Photo 1

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Photo 2

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Photo 3

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Photo 4

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Photo 5

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Photo 6

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Photo 7

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Photo 8

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module 2-clinician position in relation to the treatment area

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