Evaluating Universal Adhesives in Cervical Lesions

This controlled, randomized, single-blind clinical trial will compare the clinical effectiveness of three universal adhesive systems with different compositions in the restoration of non-carious cervical lesions. A total of 30 healthy volunteers aged 18-55 years will be included. Each participant must present with at least three vital posterior teeth with non-carious cervical lesions (≥3 lesions), with both enamel and dentin involvement and with antagonist teeth in occlusion. Each participant will receive restorations using all three adhesive systems in different teeth (split- mouth design). Randomization will be performed using a computer-generated randomization table (Research Randomizer Program). An experienced operator from the Department of Restorative Dentistry will perform all restorative procedures (AUT). Radiographs will be taken at baseline (before treatment) and at 12-, 24- and 36-month follow-up appointments to assess adaptation, marginal integrity, and proximity to the pulp. Additional radiographs will only be taken if clinically indicated (e.g., suspected endodontic involvement). Restorations will be evaluated immediately after placement, at 12-, 24- and 36-month using FDI evaluation criteria.

Inclusion criteria

• Healthy individuals aged 18-55 years
• No systemic condition contraindicating restorative treatment
• Brushing teeth at least twice daily
• At least 20 teeth in occlusion
• At least three vital posterior teeth with non-carious cervical lesions and antagonist teeth
• Completed initial periodontal therapy
• Signed informed consent

Exclusion criteria

• Healthy individuals aged 18-55 years
• No systemic condition contraindicating restorative treatment
• Brushing teeth at least twice daily
• At least 20 teeth in occlusion
• At least three vital posterior teeth with non-carious cervical lesions and antagonist teeth
• Completed initial periodontal therapy
• Signed informed consent