Alignment and levelling are a clear goal of orthodontic treatments, many of the advances made in this speciality are focused
on the obtention of an improvement of the alignement and the levelling, but we find a great lack of descriptions of the clinical
application of these advances. The goal of this paper is to present a clinical protocol of treatment concentrated on this first
phase, allowing us this way to have a control of the results and of their quality.
(Rev Esp Ortod. 2003;33(2):149-161)