Reinforcing an immature tooth model using three different restorative materials

Abstract

Background: To compare and evaluate the strength rendering capacity of three restorative
materials in tooth model simulated as immature teeth.
Materials and Methods: In this in vitro study, 80 human maxillary permanent central incisors
scheduled for periodontal extraction were collected, and an immature tooth model was prepared
using a 3 mm twist drill. To simulate single‑visit apical barrier, all the teeth were prepared with
peso number 1–6. The teeth were segregated into three experimental and a control group. The
experimental groups (n = 20) comprised of fiber‑reinforced composite (FRC), Biodentine, and
glass ionomer cement. The fracture resistance of all the teeth was tested using universal testing
machine. The final reading of the applied load to cause fracture was noted and later was subjected
to statistical analysis, P ≤ 0.05 was considered statistically significant, and the level of significance
was fixed at 5%. Student’s t‑test was applied to compare values among experimental groups
Results: There was a significant difference in the values of peak load resulting in fracture among
experimental groups which was observed statistically (P ≤ 0.001). FRC exhibited superior reinforcing
capacity (mean: 1199.7 N) among the experimental materials followed by Biodentine and Bioglass
R. The lowest value to fracture was observed in control group (mean: 236.7 N).
Conclusion: The results indicate that FRC could substantially contribute positively in reinforcing
the simulated thin‑walled immature roots.
Key Words: Biodentine, glass ionomer cement, reinforced composite