Inverted Layering Technique as a Biomimetic Procedure in the Multidisciplinary Resolution of Discolored Teeth: A Case Report.

This case report aims to describe a restorative approach with composite resin applied in reverse in the esthetic resolution of darkened anterior teeth. A 27-year-old woman presented with the main complaint of dissatisfaction with the esthetics of her smile due to dental darkening (a result of childhood trauma) without painful symptoms, pathologic clinical signs, or change in care. The intraoral examination showed a darkening of teeth 11 and 21, which radiographically showed thickening of the periodontal ligament with disharmonious configuration of the marginal gingiva. From the clinical and radiographic characteristics, periodontal intervention was selected for recovery and gingival leveling, followed by endodontic intervention and esthetic restorative restoration. The restorative step was carried out sequentially, comprising internal tooth bleaching, removal of the dentin that was still pigmented after bleaching, and enamel preservation. Soon after, the teeth were restored in an alternative way and layered using a reverse technique, placing strips of polyethylene fiber over the dentin resin. The technique preserved the remaining enamel and maintained the preexisting anterior guidance, proving it a viable and conservative alternative to other restoration methods. Longitudinal success of the restorative efficacy was confirmed after 1 year.