02 May 2026
: Case report 
The Dahl Concept as a Conservative Approach for Anterior Tooth Wear: A Case Report
Unusual clinical course, Challenging differential diagnosis, Diagnostic / therapeutic accidents, Unusual setting of medical care, Educational Purpose (only if useful for a systematic review or synthesis)
Mohammed Abdullah Hawthan
ABCDEF 1*
DOI: 10.12659/AJCR.951971
Am J Case Rep 2026; 27:e951971
Figure 3 Diagnostic planning and aesthetic simulation. (A–C) Frontal, occlusal, and lateral views of the diagnostic wax-up: The wax-up for the maxillary anterior segment (teeth 13–23) is designed with a 2 mm supra-occlusion to establish the necessary restorative space while maintaining a minimally invasive tooth preparation design. The red rectangle in the frontal view (A) highlights the recontoured gingival margins for teeth 11 and 12, which serve as a surgical guide to correct preoperative asymmetry and harmonize the zeniths with the contralateral side. Red rectangle in the lateral view (C) indicate the specific 2 mm vertical opening, demonstrating the intended occlusal vertical dimension (OVD) increase required for the Dahl principle.