A Comparative Evaluation of Compressive and Flexural Strength of a Novel Nanohybrid Composite Resin (Spident EsCom100) and an Established Nanohybrid Composite (Tetric N-Ceram): An In Vitro Study.

Background and objective Resin-based composites are widely used in restorative dentistry due to their esthetics and mechanical performance. However, variations in composition can influence their strength and clinical durability. This study aimed to comparatively evaluate the compressive and flexural strengths of the novel nanohybrid composite Spident EsCom100 (Spident Co., Incheon, South Korea) and the established nanohybrid composite Tetric N-Ceram (Ivoclar, Schaan, Liechtenstein). Materials and methods A total of 80 specimens were prepared and divided into two groups. We evaluated compressive strength using cylindrical specimens (n = 20) measuring 5 mm × 5 mm, and flexural strength using rectangular specimens (n = 20) measuring 25 mm × 2 mm × 2 mm in a three-point bending test. Testing was performed using a universal testing machine. Data were analyzed using an independent-samples t-test (p < 0.05). Results The mean compressive strength of Spident EsCom100 and Tetric N-Ceram was 116.21 ± 38.64 MPa and 116.47 ± 33.22 MPa, respectively, with no statistically significant difference (t = 0.023, p = 0.981). The mean flexural strength values were 82.98 ± 20.30 MPa for Spident EsCom100 and 84.13 ± 13.56 MPa for Tetric N-Ceram, which was also not statistically significant (t = 0.211, p = 0.828). Conclusions Both Spident EsCom100 and Tetric N-Ceram demonstrated comparable compressive and flexural strength values under the standardized laboratory conditions employed in this in vitro study, indicating satisfactory mechanical performance for restorative clinical applications.