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Abstract

Although the incidence of impaction of the upper central incisor is not so frequent, with about 0.06% to 0.2% incidence rate, the occlusal relationship and symmetric esthetics of upper anterior dentition are obviously affected. The patient’s psychology may also be altered while situation getting worse. Thus, the differential diagnosis and treatment modalities for impaction of upper central incisor should be emphasized. For the guidance of clinical treatment, the following text would focus on factors about impaction of upper central incisor including the etiology, diagnostic method, treatment principles, and also the post-treatment rehabilitation and retention.

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