Treatment that begins while a child is growing helps produce the best results. Most treatment begins when patients are between 8 and 14. During the early developmental growth of jaw bone, the teeth size can be measured through diagnostic radiographs. By this measurement the anticipated space for the permanent teeth can be precisely planned. Also it is possible to guide the teeth and modify jaw alignment for good stability. Over the years research has shown that early orthodontic treatment started during "growth spurts" has more predictable outcome in teeth alignment.