4.Results
Six months after exposure, the bracket of 34 was aligned into the dental
arch (Figure 10), and 34 had normal pulp vitality, without abnormal
looseness. His parents were satisfied with the treatment outcome at this
stage. Due to the academic reasons of their child, they did not consider
stage II orthodontic comprehensive treatment for the time being, and
requested the removal of the fixed appliance from the lower half of the
mouth, thereby ending treatment at this stage and transitioning to the
passive maintenance stage. A panoramic radiograph was taken before
removing the fixed appliance, and it showed that the 34 had curved
roots, without obvious abnormality in the bone mineral density at the
apical area (Figure 11).