上顎埋伏犬歯により中切歯の歯根吸収をきたした上顎前突の一症例

Due to ectopically impacted maxillary canines, a female patient with maxillary protrusion presented root resorption of 4 maxillary incisors. The author conducted orthodontic treatment without surgical uncovering of impacted canines, resulting in a favorable outcome. She visited our clinic at the age of 10 years and 4 months, presenting impacted bilateral canines with considerable mesial inclination adjacent to root apices of maxillary central incisors. Extracting both central incisors, we decided to have the canines naturally erupt. After 15 months, the eruption of the canines was completed. At the age of 12 years and 8 months, orthodontic treatment with multibracket
appliances was started. After 22 months of active treatment, the maxillary protrusion was improved and acceptable occlusion was achieved. Discomfort and burden are major issues as well as the post-operative complications in the series of treatment including surgical uncovering followed by orthodontic traction. Therefore, in cases where impacted canines are labio-lingually located in the middle of alveolar bone and their root formation is not completed, the method expecting natural eruption of canines is considered to be one of the treatment options.