Figure 1. Pretreatment photos showing space loss of upper left central incisor

Model study revealed a missing upper left central incisor, which is linked to space loss (3 mm), and a little crowded lower arch (4 mm). The patient's occlusion included a 7 mm overjet, an average and incomplete bite on the palatal mucosa, and midlines that coincided between the upper and lower teeth. Special examinations of the upper incisors revealed normal tooth color and normal cold and percus...