Resumo

NASSI RIBAK, Ruth. Symmetrical first premolars extractions in patients with severe crowding: Case report. Odontología Vital [online]. 2017, n.26, pp.43-52. ISSN 1659-0775.

In cases of severe crowding, many times the location of dental structures impede treatment, so asymmetrical extractions is suggested to allow a less prolonged treatment with satisfactory results. This article presents a case of dental extractions biprotrution treated with 4 premolars reported, a case of 20 years and 6 months old female patient, skeletal Class II, hyperdivergent, with bilateral dolichofacial pattern, molar Class III bilateral, canine Class I bilateral, upper midline coincident and lower midline 4mm left deviated, is reported and no habits. The goals of treatment are proposed: a symmetric extractions of first premolars upper and lower, correct the maxillary and mandibular crowding, achieve midlines, and obtain bilateral Class I molar and maintain bilateral Class I canine. It was possible to correct severe crowding with a suitable form of arch.

Palavras-chave : Biprotrution; symmetric extraction; hyperdivergent; dolichofacial; severe crowding.

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