Vol. 12 – Número 47 – 2019 Case report Página 73-84 Class II-1 subdivision treatment using extra-alveolar mini screw in izc and passive self-ligating brackets – case report Henrique Mascarenhas Villela¹ Ana Carla de Souza Nascimento² Abstract Introduction: Angle Class II dentoalveolar or moderate skeletal malocclusions can be treated with or without premolar extraction using a variety of anchoring features. The advent of mini-screws allowed skeletal anchorage in molar distalization, nullifying unwanted side effects through a minimally invasive procedure. The extra-alveolar screws also eliminated the inconvenience of positioning the body of the screws between the roots, enabling greater sagittal movements, dispensing replacement of the mini-screws or cursors use. This fact increased treatment efficiency of sagittal corrections and simplified orthodontic mechanics. The association of this anchorage feature with passive self-ligating brackets reduces the number of consultations, the levels of applied force, the need for arch bending, and dependence of patient’s collaboration. Objective: To report a clinical case in which the extra-alveolar screw was used in the IZC as an anchorage resource, associated with passive self-ligating brackets for the correction of Class II-1 subdivision. Conclusion: The association of extra-alveolar screws with passive self-ligating brackets system proved to be efficient in Class II subdivision malocclusion correction. Descriptors: Orthodontic mini-screw, mini-implant, Class II malocclusion, passive self-ligating brackets, Infra-Zygomatic Crest. ¹ Mestre em Ortodontia – UNIARARAS, Especialista em Ortodontia e Ortopedia Facial – ABO – Salvador/BA, Coordenador dos Cursos de Pós-Graduação de Aparelhos Autoligáveis e Ancoragem Esquelética – ICEO – Fortaleza/CE e Salvador/BA. ² Mestre em DTM e Dor Orofacial – SLMandic – Campinas/SP, Especialista em Ortodontia e Ortopedia Facial – UFBA – Salvador/BA. Prezado Assinante, Este artigo estará disponível para download em Janeiro de 2020.
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