Introduction: Deep interproximal lesions pose a significant clinical challenge, as they are often associated with extensive cavities and subgingival margins, rendering restorations more susceptible to marginal leakage, secondary caries, marginal discoloration between the tooth/restoration, and adhesive failure.

Objective: To conduct a review of literature published in high-impact journals regarding cervical or deep margin elevation (DME) and its effect on marginal sealing prior to metal-free indirect restorations; to evaluate the DME technique, resin materials used for elevation, microleakage, fracture resistance, and comparison between crown lengthening and DME in supporting tissues.

Methodology: A search was conducted in Pubmed, EBSCO, and Google Scholar databases. The terms "Proximal Box Elevation," "Deep Margin Elevation," "Cervical Margin Relocation," "Microleakage," "Marginal adaptation," and "Fracture Resistance" were employed.

Results: When performing the DME technique, it is necessary to consider periodontal factors to avoid invading the biological width and to provide a better prognosis for the restoration. Additionally, it is important to carefully select materials and rigorously follow the protocol to reduce the risk of microleakage. DME enhances fracture resistance by improving the cavity shape where the indirect restoration is cemented.

Conclusion: The DME protocol and resin materials used for the technique can significantly influence microleakage, fracture resistance, and the health of surrounding periodontal tissues.