Physical and Mechanical Properties of Bulk-fill Resin Composites Submitted to Additional Polymerization for Use in Semi-direct Restorations

BJ Botrel; ML Condi; CP Turssi; FM Gomes-França; WF Vieira-Junior; RT Basting

doi:10.2341/24-064-L

About Issue Online Early Subscribe For Author Help

Article Contents

SUMMARY
INTRODUCTION
METHODS AND MATERIALS
RESULTS
DISCUSSION
CONCLUSIONS
REFERENCE

Editorial Type:

Article Category: Research Article

Online Publication Date: 06 Jan 2025

Physical and Mechanical Properties of Bulk-fill Resin Composites Submitted to Additional Polymerization for Use in Semi-direct Restorations

, and

Page Range: 44 – 58

DOI: 10.2341/24-064-L

Save

Download PDF

SUMMARY

Physical and mechanical properties of high-viscosity bulk-fill resin composites submitted to additional polymerization for semi-direct use were evaluated. Filtek Z350 XT, Aura Bulk Fill, Beautifil Bulk Restorative, Filtek One Bulk Fill Restorative, and Tetric N-Ceram Bulk Fill were submitted to additional polymerization to evaluate sorption, solubility, surface microhardness, surface roughness before and after simulated brushing, color stability after coffee staining, flexural strength, elastic modulus, and modulus of resilience. Filtek Z350 XT and Filtek One Bulk Fill Restorative showed higher sorption values, while Aura Bulk Fill showed higher solubility (p<0.0001). Microhardness values were significantly higher for Filtek Z350 XT (p<0.0001). Roughness increased after wear for all resins (p<0.05). All resins exhibited staining, with significantly higher ΔE_ab, ΔE₀₀, and ΔWI_D values observed for Beautifil Bulk Restorative (p<0.0001). Flexural strength values were higher for Filtek Z350 XT and Filtek One Bulk Fill Restorative in comparison with the others (p<0.0001). Filtek One Bulk-Fill had higher elastic modulus and modulus of resilience values (p<0.0001). Physical and mechanical properties varied according to the composition. None of the bulk-fill resins showed surface microhardness and roughness properties after brushing similar to or superior to those of the conventional type. Color stability after staining depended on resin composition, with Beautifil Bulk Restorative showing more intense staining.

Figure 1

Surface microhardness (kgf/mm²) of resin composites. Different letters indicate statistically significant differences (p≤0.05).

Figure 2

Surface roughness (in μm) of resin composites over time. Different capital letters for comparisons between before and after brushing and lowercase letters for comparisons between resin composites indicate statistically significant differences at each condition (p≤0.05).

Figure 3

Flexural strength (in MPa) of resin composites. Different letters indicate statistically significant differences between the resin composites (p≤0.05).

Figure 4

Elastic modulus (in GPa) of resin composites. Different letters indicate statistically significant differences between the resin composites (p≤0.05).

Figure 5

Modulus of resilience (in MPa) of resin composites. Different letters indicate statistically significant differences between the resin composites (p≤0.05).