The aim of this study is evaluate the horizontal, vertical, and angular changes observed in the soft tissue facial profile in
association with retraction and inclination movement of the upper anterior dentition.
Material and method: The data of this retrospective study was obtained from the pretreatment and posttreatment
cephalometric radiographies of 28 patients, 10 males and 18 females, showing a mean overjet of 8,45 mm. The average time
between observations was 3,25 years and the retraction of the upper incisor 4,45 ± 2,46 mm. Different measurements were
performed: lineal (in reference to a line perpendicular to Frankfurt plane, facial plane, and Burstone’s line), angular (nasolabial
and facial convexity angles), and vertical, as well as the width of soft tissues in both the pre and posttreatment records. The data
was analysed through descriptive statistics and stepwise regression analysis.
Results: It was found a significative association between the changes in the upper incisor and the upper lip and chin soft
tissues response. The changes in the lower lip were weakly associated to the retraction of the lower incisor. They were recorded
increments of the nasolabial angle and anteroinferior facial height and a significative correlation between the mean of the
differences of both angular measurements.
(Rev Esp Ortod. 2002;32(4):297-315)