Background
The precise orchestration of crown lengthening and veneers in the esthetic zone remains a cardinal challenge in multidisciplinary oral rehabilitation. Traditional empiricism-based approaches inherently carry risks of unpredictable esthetic outcomes due to reliance on subjective estimation. To address this, a digital workflow integrating DTX Studio and Exocad was developed, enabling closed-loop precision control from diagnosis to prosthetic design.
Integration with Digital Workflow Elements
1. Multimodal Data-Driven Assessment
CBCT, intraoral scans, and facial topography were integrated to construct a patient-specific digital model for comprehensive assessment.
2. Virtual Planning for Biological Width Preservation
Exocad’s morphology simulation reverse-engineers ideal gingival positions, quantifying gingival trimming with 0.1 mm accuracy. For example, if a veneer margin requires placement 1 mm apical to the existing gingiva, the digital workflow calculates a 3 mm total adjustment (1 mm gingival recontouring + 2 mm biological width), guided by the dual-positioning guide plate.
3. Surgical Guidance via 3D-Printed Precision
The dual-positioning guide plate, designed in DTX Studio using CBCT-derived bone segmentation, enforces precise bone reduction trajectories. Its primary cortical registration and secondary soft tissue matching ensure the surgical margin is maintained at the calculated 2 mm from the bone, minimizing risks of biological width violation
4. Post-Surgical Prosthetic Optimization
iTero scans post-healing capture final gingival topography, allowing Exocad to refine veneer emergence profiles, contributing to the 40% treatment duration reduction by eliminating iterative adjustments for biological width-related complications.
Result：
Surgical error was minimized to <0.3 mm (70% reduction vs. traditional methods)， as validated by the digital workflow’s closed-loop control from CBCT segmentation to prosthetic design. Preoperative smile visualization via the multimodal model enhances patient understanding of how biological width preservation influences final pink–white esthetic harmony.
Conclusion:
The DTX-Exocad platform revolutionizes traditional workflows through data-driven decision-making and real-time workflow control, delivering quantifiable precision for complex rehabilitations. This technological convergence epitomizes evidence-based digital dentistry, where seamless workflows redefine clinical excellence.
