Pathologies generally named Cumulative Trauma Disorders/Work Related Musculoskeletal Disorders (CTDs/WRMDs), presenting signs and symptoms of inflammation of muscles, tendons, fascia and nerves of the upper members, shoulder girdle and neck, among others, have been observed not only on account of their incidence but also their association with work rhythms. Professional activities oblige dental surgeons to use, during their treatment procedures, the upper body and adjacent structures, where frequently the same pattern of movement is repeated, or mechanical compression of structures in that area occur, due to the adoption of incorrect postures and the use of excessive force, exacerbated in most cases due to time pressures. This study used biomechanical analysis to look for evidence of a relationship between those tasks a dental surgeon performs and the CTDs/WRMDs. The analysis of video data revealed that the main activities dental surgeons perform, force two or more regions of the body to adopt postures considered to be of medium or high risk, and the analysis of electromyographic readings showed that the flexor and extensor muscle groups of the carpi and trapezius are subject to great risk. Finally, the present study is a further indication that the tasks carried out expose the professional to a considerable risk of acquiring CTDs/WRMDs.
Repetitive strain injury; cumulative trauma disorders; work related musculoskeletal disorder
