Turner syndrome is a disease belonging to the group of chromosome disorders, which affect sexual chromosomes. The present study aims at analysing and describing orthodontic and TMI joint disorders in patients with Turner's syndrome, and comparing the results with those healthy controls. Data of 24 patients with Turner's syndrome as well as 24 healthy controls were collected and analysed. No significant alteration in TMI was found in any of the two groups. Both groups presented orthodontic anomalies, however, crowding was the most common anomaly in the control group, whereas in the case of patients with Turner's syndrome, other anomalies (protrusion, open bite, cross bite) could also be found more frequently.