Occasionally we can find patients that present anterior cross bite in which the four upper and lower incisors are
involved with a minimal vertical overbite or in an edge to edge occlusion. And if we add facial and skeletal characteristics of a Class I type patient, we can use a forward arch on the upper arch to uncross the bite, because the
malocclusion will be circumscribed to the anterosuperior sector, which is retroclined.
The forward arch is a very simple way to uncross anterior dento alveolar crossed bites, it consists in a 0.018" or
0.020" stainless steel wire main arch that must be separated 2 mm from the slots of the upper incisor braces. Two
stops or omegas are made mesial to the tubes of the molar bands that will impede the main arch from slipping, and in this manner the arch will push the anterior teeth forward. We must remember that the total length of the steel arch
will diminish between 1 mm to 2 mm per side when the stops are made on the arch.