Aim: To illustrate the advantages of using a Bidimensional technique in extraction treatment. Methods: In the Bidimensional technique, vertically slotted brackets of different sizes are placed on the anterior teeth (0.018 x 0.025 inch) and posterior teeth (0.022 x 0.028 inch) to produce all tooth movements, including bodily retraction of maxillary incisors, by means of sliding mechanics. When a 0.018 x 0.022-inch wire is inserted, it fills the vertical portion of the edgewise slot of the incisor brackets, providing third-order control while allowing sliding mechanics on the posterior teeth to readily occur. The method is described and illustrated with a case report of the extraction treatment of a patient with a Class I bimaxillary protrusion. Conclusion: The Bidimensional technique produces controlled tooth movements by sliding mechanics and permits satisfactory control of all dental units during space closure in the treatment of extraction cases. World J Orthod 2001;2:168-176.