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Long-term observation of two post-treatment cases with an impacted maxillary central incisor corrected by orthodontic treatment



Long-term observation of two post-treatment cases with an impacted maxillary central incisor corrected by orthodontic treatment



Ou Daigaku Shigakushi 16(1): 31-41



This article describes long-term observation of two post treatment cases with an impacted maxillary central incisor corrected by orthodontic treatment. [Case 1] Age at first examination: 11 years and 1 month. Chief complaint: Retarded eruption of a maxillary right incisor and crowding of teeth. No skeletal problems were identified. Crown axis inclination of the impacted tooth showed 104.0 degrees. Root axis inclination showed 87.0 degrees. Treatment plan: [formula; see text] extraction, traction of the maxillary right incisor, edgewise method. Treatment time: 4 years and 3 months. [Case 2] Age at first examination: 8 years and 8 months. Chief complaint: Retarded eruption of a maxillary left incisor. No skeletal problems were identified. Crown axis inclination of the impacted tooth showed 112.0 degrees. Root axis inclination showed 88.0 degrees. Treatment plan: Traction of maxillary left incisor, edgewise method. Treatment time: 5 years and 6 months. The findings were as follows; 1) When the active treatment was finished, no pulp necrosis nor any resorption of root or alveolar bone was found in the two cases. 2) At present, the crown axis inclination is restored to normal in both cases. 3) The impacted maxillary central incisors were treated to the normal position in the dental archs, and the condition and the tissues around are good. The foregoing results, we are sure, can be an important traction of the impacted maxillary central incisor.

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Accession: 040599232

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PMID: 2640792


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