EFFECT OF FILLING TECHNIQUE ON COMPRESSIVE STRENGTH OF CLASS II COMPOSITE RESTORATIONS

Ababii Victoria, José Martín Cruces, Benjamin Martín Biedma, João CT Ramos

ABSTRACT

Aim of the study This study aimed to evaluate the effect of filling technique on class II composite restoration`s compressive strength. Materials and methods Thirty human maxillary molars were prepared with standardized class II cavities and divided in two groups (n=15): the control group restored by incremental oblique filling technique and the study group restored by bulk filling technique, using the same composite resin (Filtek Bulk Fill Restorative, 3M ESPE, Saint Paul, Minnesota, USA). The specimens were subjected to a compressive load in universal testing machine until fracture and failure mode was analysed. The results were statistically processed with the software Epi Info 7.2 and Microsoft Excel 2019, and the significance level was set at 5%. Results There were no statistically significant differences in the compressive strength of performed restorations using the incremental or bulk filling technique. The failure type IV (root failure beyond repair) presented the bigger proportion for both groups, with no significant statistical difference. Conclusions With the bulk-fill composite evaluated, the restoration technique, incremental or bulk-fill, does not significantly affect the compressive strength of class II composite restorations.

DOI : 10.62610/RJOR.2025.1.18.8