ated the risk factors of MSDs on a number of Danish
dentists. They revealed that 65% of the dentists
suffer from neck and shoulder pain and 59% of the
subjects had back pain [3]. National Institute of
Occupational Health in Denmark, Copenhagen,
conducted an investigation entitles as “biomechanical
aspects of neck posture during dental work” in
1999 and declared that increased knowledge and
awareness about neck anatomy helps subjects understand
how different tissues are subjected to
pressure