Evaluating the clinical performance of a bioactive restorative materiel (Cention N) placed in non-carious cervical lesions (NCCLs) with no preparation and 1-step adhesive system or, with preparing a gingival retentive groove and no adhesive system.
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Change in retention rate
Timeframe: Baseline: 1 week, follow-ups after 3 months, 6 months, 9 months, 1 year