DOI: https://doi.org/10.36347/sjmcr.2025.v13i11.010

Pages: 2707-2711

Direct composite restorations are the mainstay of conservative restorative dentistry, combining adhesion, aesthetics, and functional reliability. Despite advances, replacement of defective restorations remains one of the most frequent clinical procedures due to marginal leakage, wear, secondary caries, or colour mismatch. This case report presents the replacement of a defective Class II composite restoration in the mandibular right f irst molar using Tokuyama PALFIQUE LX5 composite resin in conjunction with Universal Bond. The procedure involved stepwise removal of the old restoration, cavity refinement, adhesive application, incremental build up, cusp-by-cusp occlusal modelling, fissure staining, and polishing with EVE wheels. The final restoration demonstrated excellent anatomical morphology, proximal contact tightness, marginal adaptation, and aesthetic integration with adjacent teeth. This report highlights the clinical significance of PALFIQUE LX5’s nano-filled resin technology, which provides superior polishability, gloss retention, wear resistance, and radiopacity. Combined with 10-MDP–based PALFIQUE Universal Bond, the system offers strong adhesion to both enamel and dentin. Clinical outcomes indicate that PALFIQUE LX5 is a predictable and durable option for the replacement of defective restorations in load-bearing posterior teeth.