Aesthetic perception of maxillary incisor inclination in smiling profile of different facial divergences

A harmony between the inclination of the maxillary incisor teeth and facial divergence leads to more aesthetic outcomes in such a way that in posterior divergence faces, negative inclinations, in anterior divergence faces, positive inclinations and in neutral divergence faces, incisors without inclination seemed to be more attractive. Also, laypeople tended to prefer more retroclined incisors than orthodontists.