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ResumenEste reporte de caso describe el tratamiento de una paciente femenina de nueve años de edad con antecedente de trauma dental a los cinco años de edad en el sector anterior. Clase I esquelética y perfil convexo. En la exploración intraoral se observó dentición mixta, clase I molar y apiñamiento moderado en la arcada superior e inferior. El incisivo central superior derecho sin erupcionar y con pérdida de espacio por la migración mesial del incisivo lateral; se determinó radiográficamente que el incisivo central superior derecho estaba impactado en una posición horizontal hacia la línea media, el incisivo lateral inclinado y el canino con desplazamiento hacia mesial, perdiendo la guía de erupción del canino temporal y con tendencia a la impactación contra el incisivo lateral. El tratamiento ortodóncico consistió en la colocación de aparatología ortodóncica fija de 4×2 (Edgewise slot 0.022×0.025) inicial y apertura de espacio. La cirugía periodontal se realizó en dos tiempos: en la primera fase se realizó la exposición quirúrgica del incisivo central para la colocación de un botón para la tracción ortodóncica. En la segunda fase, se extrajo el canino temporal superior derecho, seguido de la cirugía de exposición del canino permanente impactado. Finalmente se traccionó cada uno al arco en su adecuada posición.AbstractThis case report describes the treatment of a nine-year-old female patient with a history of dental trauma at age five in the incisors area. She had an early mixed dentition, class I molar relationships and moderate crowding. The maxillary central incisor had not erupted, so we determined radiographically that it was impacted in a horizontal position toward the midline, the lateral incisor was inclined and the canine mesially displaced with an impaction tendency against the lateral incisor. Orthodontic treatment consisted of the placement of initial 4×2 orthodontic fixed appliances and space opening. The periodontal surgery was performed in 2-stages. In the first stage the central incisor was surgically exposed. Subsequently in the second stage, the maxillary right deciduous canine was extracted, then periodontal surgery was performed to expose the impacted permanent canine. Finally, we tractioned each tooth into its proper position.

This case report describes the treatment of a nine-year-old female patient with a history of dental trauma at age fi ve in the incisors area. She had an early mixed dentition, class I molar relationships and moderate crowding. The maxillary central incisor had not erupted, so we determined radiographically that it was impacted in a horizontal position toward the midline, the lateral incisor was inclined and the canine mesially displaced with an impaction tendency against the lateral incisor. Orthodontic treatment consisted of the placement of initial 4 x 2 orthodontic fi xed appliances and space opening. The periodontal surgery was performed in two stages. In the fi rst stage the central incisor was surgically exposed. Subsequently in the second stage, the maxillary right deciduous canine was extracted, then periodontal surgery was performed to expose the impacted permanent canine. Finally, we tractioned each tooth into its proper position. Key words: Displacement, canine, incisor, impaction.