Assessment of lower lip changes following incisor displacement in 92 orthodontically-treated adults.

Aim: A retrospective assessment of the lower lip changes consequent to incisor displacement in correction of malocclusion in a sample of 92 post-adolescent subjects.

Methods: The study sample comprised two groups, subdivided according to the direction of incisor movement achieved during orthodontic treatment: the retraction group (Group 1), made up of 41 patients in which the maxillary incisor had been moved in a palatal direction (palatal tipping); and the protraction group (Group 2), composed of 51 patients who had undergone labial movement of the upper incisors (labial tipping). In order to evaluate the mean changes in lower lip position, and consequent alterations in the quality of the patients' profiles, between T1 (prior to orthodontic displacement of the incisors) and T2 (following treatment), the following parameters were measured on lateral head film X rays: variation in lower lip vermilion thickness (dLVT); variation in lower lip sulcus depth (dLLSD); variation in lower vermilion height (dLVH); variation in exposure of the upper and lower incisors in relation to the lower stomion (dIs-STOi and dIi-STOi, respectively); variation in upper and lower incisor tipping with respect to the palatal plane (d1/PP and dinf1/PP); and variation in lower facial height (dLFH).

Evaluating the Correlation between Overjet and Skeletal Parameters Using DVT.

Aim. To evaluate the degree of correlation between a dental parameter of immediate clinical relevance (overjet) with skeletal (ANB angle) and dentoskeletal parameters such as the IMPA angle and upper incisor-bispinal angle. Materials and Methods.

Dynamic evaluation of anterior dental alignment in a sample of 8- to 11-year-old children.

Objective: To describe perceptions related to different anterior dental alignments in a sample of 106 children aged between 8- and 11-years-old.

Materials And Methods: We employed dynamic media (videos) showing a smile in four different arrangements (ideal incisal occlusion - N, median diastema - D, incisal crowding - A, protruding incisors - P), with and without general contextual attractiveness.

Results: The perception is the same both for the whole face and for the frontal smile alone and there are no significant differences between the answers from male and female interviews.