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Long-Term Clinical Performance of Posterior Composite Restorations After Nearly Three Decades: A Clinical Follow-Up
Karanvir Singh1, Nils Berneburg1, Andreas May1
1Department of Operative Dentistry, Dental School (Carolinum), Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Dentistry Journal
|June 25, 2026
Summary
Direct posterior composite restorations can last nearly 30 years, showing gradual functional aging like wear and form changes. Most restorations remain biologically sound, supporting conservative management over early replacement.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Clinical Dentistry
Background:
- Long-term clinical data on direct posterior composite restorations are limited, especially beyond survival rates.
- Understanding the functional, esthetic, and biological behavior over decades is crucial for evidence-based practice.
Purpose of the Study:
- To evaluate the long-term clinical performance of posterior composite restorations after almost 30 years.
- To assess changes in functional, esthetic, and biological criteria using FDI criteria.
- To analyze longitudinal changes in a sub-cohort of restorations.
Main Methods:
- Observational follow-up study of 57 posterior composite restorations placed in 1995-1996.
- Evaluation in 2025 using FDI criteria for functional, esthetic, and biological properties.
- Descriptive and longitudinal analyses on the entire cohort and a sub-cohort.
Main Results:
- In 2025, 54.4% of restorations were clinically acceptable, 28.1% needed intervention, and 17.5% failed.
- Significant longitudinal changes observed in anatomical form and occlusal wear; retention and marginal adaptation remained stable.
- Low incidence of secondary caries, hard-tissue defects, and pulpal issues in assessed restorations.
Conclusions:
- Posterior composite restorations demonstrate longevity up to three decades with gradual functional aging.
- Long-term deterioration primarily involves cumulative functional changes (wear, form) rather than widespread biological failure.
- Findings support differentiated long-term assessment and conservative management strategies before restoration replacement.