Abstract
Since Fujita Method was developed early 70's, the number of adult patients who prefer lingual treatment to labial has been steadly increasing.
For most of the clinical lingual cases, mushroom arches, having inset bends between first and second bicuspids and second bicuspids and first molars, must be used because of the morphological shape of the lingual surface of the teeth.
You will find, however, linguo-buccal distance of each tooth do not differ so much each other, when you see a plaster model after cutting its clinical crown part of all the teeth. It hinted me that we could adopt straight wire concept also to lingual orthodontics if we set arch wires as close to gingiva as possible. We started trying to apply the straight wire concept to our routine lingual treatment for more effective clinical treatment.
One of the clinical cases treated with 3rd generation prototype brackets is shown in this article.
