Oral Health Science focuses on assessment, diagnosis, means for preventing and the treatment of diseases that affect the mouths of patients. Areas normally affected are that of gums, jaws, and teeth. Various tasks characterise the professions within Oral Health Science including advice on proper mouth hygiene, removal and repair of decayed teeth, the fitment of braces, and making of artificial sets of teeth. As part of the processes, X-rays may be taken to get visual images of the affected areas.