Akademik Veri Yönetim Sistemi
International Congress of Multidisciplinary Medical and Health Sciences Studies, Ankara, Türkiye, 27 - 28 Mayıs 2023, ss.56, (Özet Bildiri)
Objective: The aim of this in vitro study was to evaluate the fracture resistance of endodontically treated
lower premolars after the application of different types of composite resin restorations.
Materials and Methods: Fifty mandibular premolar teeth were randomly divided into five groups (n=10).
The teeth in the negative control group consisted of intact teeth without any treatment. Teeth in the other
four groups underwent root canal treatment and standardized MOD cavity preparation. The teeth selected
as the positive control group were not restored. The teeth in the third group were restored using
conventional composite resin (3M Filtek Ultimate), the teeth in the fourth group were restored using bulkfill composite resin (3M Filtek Bulk-Fill) and the teeth in the fifth group were restored using a different
brand of bulk-fill composite resin (Tetric N Ceram Bulk). The restored teeth were incubated in distilled
water at 37°C for 24 hours. Force was applied to the specimens at a speed of 1mm/min in a universal
testing machine. Data were analyzed using one-way ANOVA and post hoc Bonferroni test. Analyses were
performed with Graphpad Prism software at 5% significance level.
Results: The lowest fracture scores were seen in the positive control group. The scores obtained in the
negative control group were significantly higher than all other groups except Tetric N Ceram Bulk. The
fracture resistance of teeth restored with bulk-fill composite resins was higher than that of teeth restored
with conventional composite resins. There was no significant difference in fracture resistance between the
groups restored with bulk-fill composite resins.
Conclusions: Fracture resistance of endodontically treated teeth restored with bulk-fill composite was
higher than that of teeth restored with conventional composite resin.