Modified Nance Appliance for Tooth Derotation
Author Name : Dr. Dayashankar, Dr. Davender Kumar, Dr. Shivendra Choudhary, Dr. Amit Dahiya, Dr. Minakshi Rana
De-rotation of posterior teeth provides space which can be utilized for relieving crowding in the anterior region. De-rotation of the teeth if, carried out with continuous wire can lead to unwanted rotation of the teeth from which forces are applied. Couple forces applying equal and opposite forces can be judiciously used for correction of rotations.