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Comparative Influence of Marginal Design and Digital Scanning Accuracy on the Clinical Longevity of Ceramic
Guillermo Pradies1, Alfonso Gil2, Belén Morón-Conejo1
1Analysis of Techniques, Material and Instruments Applied to Digital Dentistry and CAD/CAM Procedures Research Group, Complutense University of Madrid, Madrid, Spain.
Summary
Both vertical and horizontal finishing lines show similar success for dental restorations. Intraoral scanners (IOS) are accurate for inlays and onlays, but more research is needed for veneers.
Area of Science:
- Dental Restorations
- Digital Dentistry
Background:
- Finishing line design impacts dental restoration outcomes.
- Intraoral scanners (IOS) are emerging technologies in prosthodontics.
Purpose of the Study:
- Evaluate vertical vs. horizontal finishing lines for restorations.
- Assess IOS accuracy for fabricating inlay, onlay, and veneer restorations.
Main Methods:
- Two systematic reviews with meta-analyses were performed.
- PRISMA guidelines were followed for study selection and analysis.
- Consensus statements synthesized findings, recommendations, and research gaps.
Main Results:
- No significant difference in survival, success, or periodontal outcomes between vertical and horizontal finish lines.
- IOS demonstrated high accuracy for single-unit inlay and onlay fabrication.
- IOS accuracy for veneer restorations requires further investigation due to limited data.
Conclusions:
- Both finishing line designs are clinically viable; material choice and planning are key.
- IOS are reliable for inlays and onlays, but veneers need more research.
- Future research should focus on clinical selection, esthetics, and patient outcomes.
