Técnica de elevação da margem proximal: revisão de literatura

Abstract

Introduction: The margins of subgingival restorations are a common challenge in clinical dental practice. The preparation steps, analog or digital molding, cementation, moisture control and excess cement removal are challenging in subgingival margins. In view of this, in the presence of deep interproximal cavities beyond the cementoenamel junction, for clinical success it is essential to control these operative steps and obtain a good marginal adaptation.Objective: To demonstrate, through a literature review, the performance of proximal margin elevation as an alternative to conventional methods of clinical crown augmentation in subgingival restorative procedures, presenting its indications, limitations, as well as its performance in adhesive restorations. Methodology: the following descriptors were used: "Proximal Box Elevation" "Deep margin elevation" "Cervical margin relocation", in the PUBMED database, twenty-five articles were found, nineteen articles were selected, adding two other studies identified in the reference sections of these articles, totaling twentyone articles between the years 2012 to 2020.Results: as a less invasive alternative to relocate the subgingival to supragingival margin, the elevation/relocation of the margin with composite resin was established. The application of a composite resin in order to raise the deep margin of these cavities facilitates the application of a rubber dam, thus ensuring control of oral fluids, reducing the viability and intensity of the unfavorable effects of polymerization shrinkage and enabling an impression simplest of the supragingival margins.Conclusion: studies in the literature showed that it can be an alternative to crown augmentation surgery in some procedures, with good acceptance for the periodontium, as long as the operator is skilled with the technique, ensuring good adhesion with well-placed and sealed margins.