two groups of 30 patients will receive cervical restorations by using calcium and phosphate releasing hybrid restorative material (Activa™ Presto, Pulpdent®, USA), or a fluoride-releasing hybrid restorative material (Giomer, Shofu, Japan). Then these restorations will be evaluated at baseline, 3 months, 6 months, 9 months, and 12 months according to modified USPHS criteria in terms of marginal adaptation, Marginal discoloration, recurrent caries, retention, surface texture, and Post-operative sensitivity.~Examination and selection of all patients will be done according to inclusion and exclusion criteria.~A class v cavity will be prepared after local anesthesia has been given as required. Rubber dam isolation followed by the placement of restorative material according to the randomization sequence.~For the intervention: selective etching to enamel and universal bond agent to all the cavity will be applied first, followed by filling of the cavity with fluoride, calcium, and phosphate-releasing new bioactive material (Activa™ Presto, Pulpdent®, USA) using a 19-gauge applicator tip on the syringe and light-curing for 20 seconds between each 2mm layer.~For the control group: selective etching to enamel and universal bond agent to all the cavity will be applied first, followed by filling of the cavity with fluoride-releasing hybrid restorative material (Giomer, Shofu, Japan) and will be light polymerized using a light-emitting diode (LED) light-curing unit for 10 seconds between each 2mm layer.
This study will be conducted to evaluate and compare the clinical performance of fluoride, calcium, and phosphate-releasing new bioactive material versus a fluoride-releasing hybrid restorative material in cervical lesions for one-year follow-up.~The clinical evaluation will be done using modified USPHS criteria at baseline,3,6,9 and 12 months.