Reabilitação semidireta em resina composta como alternativa para restauração de dentes parcialmente destruídos: Relato de caso

Objective: To present the semi-direct technique using composite resin as an alternative for the rehabilitation of a partially destroyed tooth with cusp loss. Methods: The patient attended the clinic of Universidade Paulista (UNIP), Indianópolis campus, presenting a fracture of the distolingual and distobuccal cusps of tooth 36, as well as involvement of the mesiobuccal and mesiolingual cusps, without pain. Clinical and radiographic examinations revealed no endodontic involvement. Considering the extent of the coronal involvement and the socioeconomic context, the fabrication of a composite resin overlay using the semi-direct technique was chosen. The preparation was performed according to the literature. After preparation, an impression of the hemi-arch was taken using irreversible hydrocolloid, and a model was obtained using addition silicone. The restoration was fabricated on the model using nanohybrid composite resin (A2 shade) through an incremental technique and light-cured for 20 seconds per surface, at a power output of 1200 mW/cm². Finishing was performed with finishing burs of decreasing grit in high-speed rotation, and polishing was performed with paper discs and rubber cups of decreasing grit at low speed. After cleaning the cavity, an adhesive technique was performed using a self-etch adhesive and selective enamel etching. Silane was applied to the internal surface, and cementation was performed using a dual-cure resin cement, with verification of the contact points. Results: The restoration presented satisfactory adaptation, reestablishment of coronal anatomy, contact points, and masticatory function, as well as a favorable esthetic outcome, with a satisfactory clinical result. Conclusion: The semi-direct composite resin restoration proved to be an effective and low-cost alternative for restoring function and esthetics in partially destroyed teeth