Gingival recessions were classified by Miller according to the prognosis for root coverage. It was conventionally assumed that the compromise of the interproximal insertion level (Miller class III) limited the possibilities of total coating of the exposed roots. This article describes the treatment of a Miller class III recession in the antero-inferior area using a combination of periodontal plastic surgery techniques. The extension of the denuded radicular area and the scant apical keratinised gingiva on the defect motivated the choice of the technique, which included a subepithelial connective graft, a tunnelled flap and a rotational flap for its vascular support. In the results, complete root coverage was observed in a fine periodontium. This implies a paradigm shift with respect to the Miller classification and concurs with more recent studies in which the analysis of the interproximal tissue would have a predictive value of root coverage. The control of the oral biofilm, prior periodontal normalisation, the magnification approach, the bilaminar character of the nutritional contribution for the connective tissue graft, the release of the anteroinferior buccal frenulum, the root conditioning with proteins derived from the enamel matrix, the suture without tension of low tissue reaction, and the therapeutic adhesion of the patient are factors conditioning the therapeutic result obtained. Complete recovery of the function and aesthetics of the mucogingival complex, when treating gingival recession with loss of interproximal insertion, can be achieved by the overall approach of its prognostic factors.