The aim of the study was the clinical assessment of some restorations made with composite resins through the self-etching strategy, in the lateral sector, after their 36 month presence in the oral cavity.
Materials and method. The study was carried out on 50 patients, to whom 74 restorations were made with the Filtek Z250 (3M ESPE) hybrid composite resin and the Adper Prompt L-Pop (3M ESPE) self-etch adhesive system. The restorations were divided into 3 groups, according to the number of restored dental surfaces (1, 2 and 3), their longevity being evaluated at 12, 24 and 36 months, on the basis of the Ryge criteria.
Results. Considering colour restoration, an increase in the B scores could be noticed at 2 and 3 years, respectively. For the marginal discoloration criterion, the ratio of lesions with A score gradually decreased from an initial value of 100%, to 98.6% after 12 months, to 96% after 24 months, up to 93% at 36 months, respectively. The same evolutive tendency was maintained in the case of marginal adaptation. From the viewpoint of the anatomic form, scores A decreased up to 92% in the examination made at 36 months for group 2, and up to 87% in group 3. As to the surface condition(roughness), it was only 2 restorations (one from group 2 and another from group 3) that received B score after 36 months of functioning in the oral cavity. No secondary caries lesions were registered during any interval of clinical evaluation.
Conclusions. Usage of hybrid composite resins in association with a self-etch adhesive system for restorations in the lateral sector led to significant results regarding their behaviour after 3 years of functioning in the oral cavity.
- clinical assessment
- composite resin restorations
- self-etch adhesion