The objective of this research was to determine the inclination of maxillary incisors in subjects with class III malocclusion. Were included 35 subjects with Class III facial deformity (DF-III) to analyze cone beam computed tomography; measurements were realized in the four maxillary incisors identifying the palatal plane considered between anterior and posterior nasal spine and dental axial axis from the union between coronal point and apical point; The results showed angulations from 111.6o to 113.7o for the incisors, which allows estimation of values close to normal dental angulation. It is concluded that the selected subjects present adequate dental angulation to perform surgery first.

KEY WORDS: Incisor inclination; Class III malocclusion; Surgery first.