Posterior scissor bite and lateral open bite with missing lower first molar and second premolar

This article presents an adult patient with scissor bite in the posterior region, lateral open bite with a missing first molar and a second premolar on the lower left side. The scissor bite was difficult to correct due to severe occlusal difficulties in the lower left arch with a highly titled and extruded third molar. After third molar extractions (except left mandibular molar), the first step was to upright the lower second molar with a helical loop, replaced in a second step by a multiloop edgewise archwire including the third molar in order to correct the occlusal plane, uprighting and intruding the posterior teeth (second and third molar) and extruding the lateral teeth (canine and first premolar). In a third step, after the occlusal space was obtained on the teeth with previous scissor bite, the upper second molar buccal inclination was also improved with a helical loop followed by a multiloop edgewise archwire technique.