2-year clinical evaluation of Class I posterior composites.

PURPOSE

To clinically evaluate different brands of resin composites in Class I restorations.

MATERIALS AND METHODS

A total of 120 Class I cavities were prepared in permanent molars and restored with four posterior resin composites: Clearfil Photo Posterior, Z100, Herculite XR, and Heliomolar RO. The restorations were evaluated at baseline, 1 and 2 years using the USPHS criteria.

RESULTS

After 1 year, Z100 restorations were rated Alfa in all tested criteria. Clearfil PP, Herculite XR and Heliomolar RO showed slight changes in color match, anatomic form, and marginal adaptation. After 2 years, no significant difference was found in the evaluation of cavosurface discoloration for all tested materials. Z100 and Herculite XR were significantly more color stable than Clearfil PP and Heliomolar RO. The anatomic form evaluation showed Z100 with a significantly higher value than other groups. Heliomolar RO revealed the lowest percentage of marginal adaptation.