With the arrival of the chair that permits the client lay down, the work postures were able to
change. Today, the dental-surgeon works, most of the time, in a sitting posture, that, when
it is done in a correct way, reduces the fatigue, increases the balance and improve the
stability (Saquy et al., 1996). In this posture, the column, when leaned on the chair, is
straight and the feet are free to a better control of the pedals on the floor. However,
besides these improvements, there are some postures adopted by the dental professionals
that, in a period of time, can cause serious problem in vertebral column, in circulatory
system and in articulations.