Lesion Morphology Modification Is Unnecessary for Non-carious Cervical Lesion Restorations: A Comparison of Stiff and Flowable Composites.

ABSTRACT: This study investigates the impact of non-carious cervical lesion (NCCL) morphology - horizontal-oval-round (HOR) and horizontal-oval-wedge (HOW) - and 2 different restoratives - stiff composite (Filtek-Z350XT, Z) vs flowable composite (Filtek-Bulk-Fill Flowable, F) - on fracture risk and stress distribution in human teeth. Forty-five extracted sound maxillary first premolars were allocated into 3 groups (n = 15): sound (S), nonrestored HOR (R), and nonrestored HOW (W). Standardized NCCLs were prepared, and fracture strength was measured using a universal testing machine. One-way ANOVA and posthoc tests (P < .05) were used for statistical analysis. Validated 3D-FEA models were used to simulate von Mises stress under an average occlusal load (54.64 N) across 7 models: S, R, W, and restored

SUBMITTER: Dhammayannarangsi P 

PROVIDER: S-EPMC12666853 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature