Clinical Performance of Two HEMA-Free Universal Adhesive Systems

This randomized controlled clinical trial aims to compare the 12-month clinical performance of two HEMA-free universal adhesive systems for restoring anterior cervical carious lesions. Participants will be randomly allocated (1:1) to receive restorations using either a two-bottle HEMA-free universal adhesive (G2-Bond Universal) or a one-bottle HEMA-free universal adhesive (BeautiBond Xtreme), both applied in self-etch mode. The primary outcome is restoration retention, while secondary outcomes include marginal adaptation, marginal discoloration, and postoperative sensitivity, evaluated at baseline (24 hours), 6 months, and 12 months using the modified USPHS criteria.

Inclusion Criteria: . Patients aged from 18 to 55 years. * Patients with cervical carious lesions on the labial surfaces of anterior teeth. * Lesions classified as ICDAS 3 and 4. * Patients with good general health. * Patients able and willing to attend the follow-up visits at baseline, 6 months and 12 months. Exclusion Criteria: * Patients with severe or chronic periodontal disease. * Patients with poor oral hygiene or uncontrolled plaque accumulation. * Patients with bruxism or other parafunctional habits that may affect restoration survival. * Non-vital teeth. * Fractured or cracked teeth. * Teeth with defective existing cervical restorations. * Root caries extending beyond the restorative indication of the study. * Pregnant or lactating patients. * Patients with known allergy or hypersensitivity to any component of the adhesive systems or restorative material used in the study. * Patients unable to attend the scheduled follow-up visits.