Group II: Myobrace group
crowding, upper incisors
The appropriate size of Myobrace is chosen by using a special ruler to measure the distance between the distal portion of the lateral upper right incisor and the left, regardless of any crowding or diastema. The measure is based on the mesial-distal dimensions of the upper incisors, and not on their position. In cases where there is a severe crowding or wide spaces, and it is difficult to make measurements with a ruler, they can be measured individually and them added together, to get the total size of the four upper incisors. This distance is them confronted with a special table to choose the correct size of MB [Patients of both groups were followed up for six months period for retention.