Dental bonding methods showed no clear difference in long-term restoration retention
Fillings for tooth-neck defects unrelated to decay had no statistically significant retention differences across the tested bonding methods.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The trial did not detect statistically significant differences in how often restorations stayed in place across the bonding strategies. Some restorations lost retention in every group. This result does not prove the techniques are equivalent, or that any method is best for other adhesives or types of dental repair.
The recall rate was 84%, and fewer restorations were analyzed at the final visit than were originally placed. The abstract does not explain how missing observations were handled, limiting assessment of the long-term comparison.
What researchers found
Restoration retention
Across self-etch, selective enamel etching, and etch-and-rinse with dry or wet dentin at 7.5 years; p > 0.05.
What was compared
The study tested different ways of applying the same universal adhesive. Its primary assessment covered restoration fracture and retention, while additional assessments examined staining, fit at restoration edges, sensitivity and decay around the margins.
Other reported outcomes
The abstract also reports minor staining, small defects where fillings met teeth, and a cavity at a restoration edge. Reported comparisons for these outcomes were not statistically significant; sensitivity results were not provided.
The original publication
Longevity of a single-dose, dual-cure universal adhesive: A 7.5-year double-blind split-mouth two-center randomized trial.
Ñaupari-Villasante R, Carpio-Salvatierra B, Matos TP et al.
Dent Mater · 2026
- PubMed ID
- 41318227
- Record checked
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