The Dahl Concept as a Conservative Approach for Anterior Tooth Wear: A Case Report

Area of Science:

• Dentistry
• Restorative Dentistry
• Biomechanics

Background:

• Localized tooth wear poses a significant clinical challenge, impacting mastication and aesthetics.
• Conservative strategies are favored over full-mouth rehabilitation to preserve tooth structure.
• The Dahl concept utilizes supra-occlusion to create interocclusal space for minimally invasive restorations.

Purpose of the Study:

• To detail the clinical application of the Dahl technique for moderate localized anterior tooth wear.
• To evaluate the efficacy of a 2 mm increase in occlusal vertical dimension (OVD) using the Dahl concept.
• To assess the long-term stability and outcomes of this conservative restorative approach.

Main Methods:

• An intentional 2 mm increase in OVD was achieved with interim crowns on maxillary anterior teeth (13-23) in supra-occlusion.
• Temporary posterior disclusion initiated dentoalveolar compensation in posterior teeth.
• Definitive monolithic lithium disilicate (e.max) crowns were placed after achieving posterior occlusal contacts.

Main Results:

• Full posterior occlusal contacts were re-established within 4 months.
• The Dahl technique facilitated the placement of definitive anterior restorations.
• Excellent marginal integrity and stable posterior occlusion were observed at the 2-year follow-up.

Conclusions:

• The Dahl concept with a 2 mm supra-occlusal protocol is a conservative, reversible, and cost-effective method for localized anterior wear.
• This approach restores function and aesthetics while minimizing biological impact.
• The study confirms successful posterior occlusal re-establishment within 4 months and stable outcomes over 2 years.