Direct-indirect technique for ultrathin non-prep resin composite veneers using 3D-printed models and translucent...

This report presents a minimally invasive, adhesive-friendly approach for the esthetic rehabilitation of multiple anterior teeth using a modified direct-indirect technique with ultrathin composite resin veneers. A 43-year-old woman presented with esthetic concerns and disharmony of the maxillary anterior region. The treatment comprised ultrathin composite resin veneers fabricated using a modified direct-indirect technique, incorporating a fully digital workflow with a smile design and a three-dimensional-printed model used to create a translucent silicone index. Without tooth preparation, the index was filled with composite resin and intraorally positioned to replicate the planned morphology. The veneers were removed, post-cured, and extraorally completed before definitive adhesive cementation.

Traditionally, the direct-indirect technique has been limited to single restorations that require enamel reduction and freehand stratification. This report describes a modified approach that enables the fabrication of multiple ultrathin veneers without tooth preparation, thereby preserving the enamel and promoting adhesive longevity. The innovative aspect lies in the integration of a fully digital workflow, ensuring precise replication of the morphology and control of the restoration thickness. Extraoral finishing of proximal contacts and margins before cementation improves clinical efficiency and esthetic predictability.

For patients requiring multiple composite veneers, the modified direct-indirect technique provides a conservative, precise, and predictable solution. It preserves sound tooth structure, optimizes adhesive performance, and enhances efficiency and esthetic outcomes through digital integration.