Fundamentals of Dentistry: Unit 103 - Work Simplification and Motion Economy

Goals

Maximize efficiency, decrease illnesses and injuries, increase productivity

Ergonomics

The study and analysis of human work, including the anatomical and psychological aspects of people and their work environments

Ergonomics in Dentistry (things to consider)

Body mechanics, dental equipment, positioning of the dental team (patient, operator, assistant)

Office and Equipment Design

Layout and design of all equipment, traffic pattern, task is fit to the person performing, effective procedures and techniques

Work Simplification Principles

-Eliminate: remove unnecessary equipment, movements, or steps to procedures. Pre set trays

-Combine: use double ended instruments

-Rearrange: place equipment into position that will eliminate unnecessary movement

-Simplify: eliminate as many variables as possible

Work Simplification Benefits

Reduces expenses, stimulates team work concept, provide better patient care, efficient time utilization, better planning and trouble shooting

Motion Economy Principles

-reduce the length and number of motions

-use body motions that use the least amount of time

-use smooth continuous motions (avoid zig-zag motions)

-use of preset trays organizing instruments in the order they will be used

-minimize the number of instruments

-set up instruments, equipment and materials ahead of time

-place patient in a supine position

-work area are 1" to 2" lower than the elbow

-operating stool for proper posture and body support

Classification of Motion: Class 1

Movement of fingers only, picking up an instrument from the patient tray

Classification of Motion: Class 2

Movement of fingers and wrist, mixing materials on the tray

Classification of Motion: Class 3

Movement of fingers, wrist, and elbow, transferring instruments to the operator

Classification of Motion: Class 4

Use of entire arm and shoulder, repositioning the dental/operating light

Classification of Motion: Class 5

Use of entire arm and upper torso, rotating and reaching for items on the counter