ated the risk factors of MSDs on a number of Danishdentists. They revealed that 65% of the dentistssuffer from neck and shoulder pain and 59% of thesubjects had back pain [3]. National Institute ofOccupational Health in Denmark, Copenhagen,conducted aninvestigation entitles as “biomechanicalaspects of neck posture during dental work” in
1999 and declared that increased knowledge andawareness about neck anatomy helps subjects understandhow different tissues are subjected topressure