Aim: To evaluate and compare the fracture resistance of endodontically treated premolars restored with Microfill, Nanofill and Supra-nanofill composite in mesio‑occluso‑distal (MOD) cavities.
Materials and methodology- Eighty orthodontically extracted maxillary premolars were selected for study. Twenty intact teeth served as positive controls (Group 1). Endodontic therapy was done in the remaining 60 teeth. MOD cavities were prepared in all the teeth with standardized dimensions and were randomly divided into three groups (Group 2 ‑ Microfill, Group 3 ‑Nanofill and Group 4 – Supra-nanofill composite). Restorations were done for all groups. Fracture resistance was measured by Instron universal testing machine.
Statistical Analysis Used: One‑way ANOVA test and Tukey’s post hoc test.
Results: Highest fracture resistance was shown by intact teeth group followed by supra-nanofill, nanofill and microfill respectively. Statistically Significant difference was revealed by ANOVA test (P < 0.0001) and Tukey’s post hoc test (P < 0.0001).
Conclusions: Among the experimental groups, Supra-nanofill composite showed the highest fracture resistance. Statistically significant difference was observed for all the groups.
Impact Factor
2022: 6.012
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