Intentionally Exposed d-PTFE Membrane and Guided Bone Regeneration after Malpositioned Dental Implant in Anterior Area: A Case Report with 1-year Follow-up

Authors: Ulisses Ribeiro Campos Dayube, Thayane Silveira Mata Furtado, Márcio de Carvalho Formiga and Jamil Awad Shibli

Abstract

This article describes the removal of a malpositioned dental implant, using an implant retriever, followed by guided tissue regeneration with the use of an xenogeneic graft and a dense polytetrafluorethylene membrane that remained partially exposed for 28 days, and the post-surgical prosthetic and orthodontic treatment until conclusion of the oral rehabilitation procedure. The patient, 50 years of age, presented to a private clinic for evaluation of an implant supported fixed crown, with unsatisfactory esthetic appearance and function. The treatment plan involved the removal of this implant, guided bone regeneration, and placement of a new implant in a better 3D position. Subsequently, the patient received a provisional dental prosthesis, orthodontic treatment in order to realign the gingival margins, and additional rehabilitation with the application of some ceramic veneers to enhance the patient’s esthetic appearance, improve function, and show the 1-year follow-up of the case. The treatment plan was shown to be appropriate for this case, in which soft and hard tissue were adequately regenerated, and resulted in good oral rehabilitation with tissue stability around the teeth and implant.

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