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Treatment of labially impacted maxillary canine with space deficiency and class III malocclusion: Case report

Tai-Chang Chen,C. Chiang,Ming-Shu Lee,C. Ho

Published 2020 in Journal of Dental Sciences

ABSTRACT

tps://doi.org/10.1016/j.jds.2019.11. 91-7902/a 2020Association for Denta e CC BY-NC-ND license (http://creati Impaction of the maxillary canine is occasionally encountered. In this case report, we used surgical exposure and orthodontic closed traction technique to move the impacted right maxillary canine to an appropriate alignment and gained a class I molar relationship with normal overjet and overbite for the patient. This 13-years-old male patient was referred to our hospital for treatment of impacted right maxillary canine. He had symmetrical facial appearance but a straight lateral profile (Fig. 1A and B). Intraoral examination showed that the right maxillary canine and bilateral maxillary second molars were unerupted. Upper dental midline shifted 2 mm to the right side. There were spaces between teeth from the right maxillary lateral incisor to the right maxillary second premolar, but only 1 mm space left at the right maxillary canine area. Bulging was palpable over the right maxillary anterior vestibular area, corresponding to the right maxillary lateral incisor. Molar relationship was class I on the right side with severe mesial-in rotation of the right upper molar and class III on the left side (Fig. 1C, D and E). Periapical and panoramic films showed a high-position impacted right maxillary canine, with the coronal portion apical to the lateral incisor and a well-defined radiolucent lesion embracing the crown of the impacted canine. No obvious evidence of root resorption of the right lateral incisor was found, and the root formation of the premolars were not yet completed (Fig. 1F and G). Cephalometric

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