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Advanced Compositional Analysis of Nanoparticle-polymer Composites Using Direct Fluorescence Imaging
Published on: July 19, 2016
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Direct and Semi-Direct Composite Techniques in Posterior Teeth: A Two-Year Follow-Up Comparative Study
Adriana Saceleanu1,2,3, Anca Maria Fratila1,2,3, Vasile Calin Arcas1,4
1Department of Dental Medicine and Nursing, Faculty of Medicine, Lucian Blaga University of Sibiu, 550169 Sibiu, Romania.
Journal of Clinical Medicine
|January 28, 2026
Summary
Direct composite restorations offer better short-term aesthetics, while semi-direct onlays provide superior long-term wear resistance and marginal integrity over two years.
Area of Science:
- Dentistry
- Dental Materials
Background:
- Composite restorations are standard for posterior teeth due to aesthetics and conservative nature.
- Direct and semi-direct techniques differ in clinical longevity and performance.
- Understanding these differences is crucial for optimal restorative choices.
Purpose of the Study:
- Compare clinical performance of direct vs. semi-direct composite onlay techniques.
- Evaluate aesthetics, surface finish, wear resistance, marginal integrity, and efficiency over two years.
- Provide evidence-based insights for restorative dentistry.
Main Methods:
- 348 composite restorations placed in 192 patients.
- Evaluations at baseline, 6 months, 1 year, and 2 years using standardized rating scales.
- Statistical analysis included repeated-measures ANOVA and Wilcoxon/Mann-Whitney tests.
Main Results:
- Significant time effects observed across all parameters (p < 0.0001).
- Direct technique showed superior initial aesthetics and finish (p < 0.001), diminishing by year two.
- Semi-direct technique demonstrated better wear resistance and marginal integrity at years one and two.
Conclusions:
- Direct technique excels in short-term aesthetics and procedural efficiency.
- Semi-direct technique offers superior long-term durability and marginal adaptation.
- Both techniques showed deterioration, especially in marginal adaptation.
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