Aims and objectives. The aim of this study was to investigate the incidence of changes in the axial organ among dentists and dental hygienists as well as to compare the monitored parameters with a group of dental hygiene students.Background. The work of dentists or dental hygienists requires prolonged standing in non-ergonomic positions. This has a negative impact on their health. Current prevention programs seem to be ineffective. This paper deals with the biomechanical analysis and assessment of the health risk factors of dentists and dental hygienists.Methods. In order to evaluate possible risks, postural parameters were detected among 54 dentists and dental hygienists and 75 dental hygiene students by means of the SpinalMouse®. Changes in the basic shape of the spine position in the sagittal and frontal plane and mobility in the sagittal plane were monitored.Results. The results show an increased incidence of changes in axial organ among dentists and dental hygienists, which indicates a decreased quality of body control in young persons.Relevance for clinical practice. The study suggests that changes in the axial organ represent a signifi cant burden for the dental profession.