Ergonomics in Dentistry

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2
 Ergonomics
 Importance Of Posture
 Ergonomics For Dentists
 Musculoskeletal Disorders
 Classification
 Signs
 Sy...

Proper positioning of the patient and operator, illumination and retraction
for optimal visibility are fundamental pre req...

• 1790 was a big year for dentistry, as this was the year the
first specialized dental chair was invented.
• It was made b...

Modern dental chairs offer an ever-increasing list of benefits for
patients and dental professionals.
They are built out o...

FACTORS TO BE KEPT IN MIND REGARDING DENTAL CHAIR:
It should be able to provide comfort to the patient
It should be able...

For restorative dental procedures, the most preferred operating
positions are:
1. Upright position
2. Almost supine
3. Rec...

UPRIGHT POSITION
This is the initial position of chair from which further adjustments are made
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ALMOST SUPINE
• In this, chair position is such that head, knees and feet are approx. at same level
• Patient’s head shoul...

RECLINED 45 DEGREES
• In this position , chair is reclined at 45 degree
• Mandibular occlusal surface are almost 45 degree...

PATIENT POSITIONS
• Patient should be seated so that all his body parts are well supported.
• The patient's head should al...

OPERATING POSITIONS
• Once the patient has been comfortably positioned,
the dentist and the assistant should sit themselve...

• For better understanding, sitting positions of
operator are related to a clock.
• In this clock concept, an imaginary ci...

18
ACCORDINGLY THE OPERATOR'S POSITIONS
Right Handed Operator
1. Right front or 7’o clock position
2. Right or 9’o clock p...

 When working from clock positions 9-12:00,
feet spread apart so that your legs and the
chair base form a tripod which cr...

RIGHT FRONT POSITION (7 O'CLOCK)
1. It helps in examination of the patient
2. Working areas include:
a) Mandibular anterio...

23
Torso Position : Sit facing the patient with your hip in line with the
patient’s upper arm.
Leg Position : Your thighs ...

RIGHT POSITION (9 O'CLOCK)
1. In this position, dentist sits exactly right to the patient
2. Working areas include:
a) Fac...

25
Torso Position. Sit facing the side of the patient’s head. The midline
of your torso is even with the patient’s mouth.
...

RIGHT REAR POSITION (11 O'CLOCK)
• Dentist sits behind and slightly to the right of the patient
and the left arm is positi...

27
Torso Position. Sit at the top right corner of the headrest; the
midline of your torso is even with the temple region o...

1. While doing work in maxillary arch, maxillary occlusal surfaces should be
perpendicular to the floor.
2. In mandibular ...

6. Dentist should not use patient's chest as a instrument trolley.
7. The operator should leave left hand free during most...

For successful instrumentation, it is important to proceed in a step-by-step
manner. A useful saying to help remember the ...

SEQUENCE FOR ESTABLISHING POSITION
1 ME
Assume the clock position for the treatment area
2 MY PATIENT
Establish patient ch...

Some Improper Postures That Dentists Take:
 Working with the neck in ﬂexion and tilted
to one side.
 Shoulders elevated....

ERGONOMICS FOR DENTISTS

A risk factor is not always a causative factor
Amount
Duration
Level of
exposure

ERGONOMICALLY FAVOURABLE POSITION

HAND INSTRUMENTS

THE "FIVE TIMES" HAND AND WRIST EXERCISES
Exercise 1
Make a tight fist, hold for five second and
release, relaxing hand an...

Exercise 2
Stretch your fingers wide.
Hold for 5 seconds, and then return hand to relaxed position.
Repeat five times.

Exercise 3
Hold arms out in front at shoulder height ,with
palms of hands facing downwards.
Rotate your hands 5 times cloc...

Exercise 4
Hold your arms out to the side of you at 90 degrees to your trunk at shoulder height
Flap your hands up and dow...

2) TWO NECK EXERCISES
Neck and backstretches for use whilst working in a dental surgery chair or at a
computer or writing ...

Exercise 2) Chin tucks
Keeping the head level ( keep looking straight ahead )
Tuck in chin and then lengthen back of neck

3) TWO STRETCHES TO TRY WHILE SITTING IN THE DENTAL CHAIR
Shoulder Lifts
Backward Arching
Exercise 1) Shoulder lifts
Raise...

Exercise 2) Backward Arching
Stretch backward over the edge of the backrest.
Remember to stretch the neck at the same time...

4) END OF CLINICAL SESSION STRETCHES FOR THE LOWER BACK
1) Pelvic rocking
2) At the end of a working session
3) Whilst wal...

Exercise 2) At the end of a working session
Stand up with feet slightly apart.
Place hands on either side of the lower spi...

Exercise 3)whilst walking out through the door
Stand in the doorway.
Feet slightly apart.
Raise arms upwards and place han...

Ergonomics in Dentistry

Ergonomics in Dentistry

Ergonomics in Dentistry

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