Orthodontic treatment of multiple impacted teeth in the maxilla and mandible

This case report examines a 13-year-old male patient who successfully underwent multidisciplinary combined treatment to correct multiple impacted permanent teeth in the maxilla and mandible. The patient exhibited impaction of canines in the maxilla and multiple premolars in both jaws. The 3-dimensional positions of the canines in the maxilla showed significant heterogeneity. Consequently, we selected specific treatment strategies based on the conditions of the 3-dimensional positions, including the angle between the canine teeth and the midline, as well as the degree of overlap with the lateral incisors. In addition, because of the impaction of multiple premolars and the close positional relationship of the impacted teeth on the right side of the maxilla, we applied orderly traction to the impacted teeth, emphasizing the use of light force throughout the treatment process. On completion of the treatment, Class I molar and canine occlusion with ideal overbite and overjet was achieved. There were no signs of root resorption, and the roots were parallel. This case report demonstrates that the treatment approaches for impacted canines and multiple impacted teeth should be based on their positional and anatomic features, using orthodontic traction or inducing spontaneous eruption as necessary.