Clinical Evaluation of Three Adhesive Systems in Class V Restorations

Restoration of non-carious cervical lesion (NCCL) is used to evaluate adhesive effectiveness. Objective: The purpose of this clinical trial is to compare the clinical performance of two new self etching dental adhesives in the restoration of NCCL to Single Bond Plus a traditional one bottle total etch dental adhesive. Material and Methods: 50 adult patients 19 years or older were recruited after obtaining informed consent. Each had at least 3 NCCLs with minimum depth of 1.5mm, no chronic periodontal disease, and normal salivary function. The teeth were restored randomly with Single Bond Plus, Easy Bond or Scotchbond SE dental adhesives and Filtek Supreme Plus (3M ESPE) composite resin. All restorations were isolated with a rubber dam and cleaned with flour of pumice. A short enamel bevel was made with an OS 2 bur (Brassler, GA) and high speed hand piece (NSK, Japan). One of the adhesives was applied following manufacturer's directions. Application time was measured with a stop watch. The proper composite shade was selected, placed in 2 mm increments and cured using G Light (GC America, Chicago, IL). Output was measured daily (> 700mW/cm2). Finishing was completed using finishing burs (7901 and OS 2 Brassler). Polishing was completed with Sof-Lex and Enhance/PoGo polishing systems. Digital images were made before and after preparation, at baseline and at each recall. Patients were evaluated at base line (after 2 weeks) and 6 months for anatomic form, margin adaptation, staining, retention, surface roughness, color match, post-operative cold sensitivity and secondary caries. The results were evaluated with McNemars test. Results: Of all placed restorations evaluated at 6-month recall, one restoration failed. Conclusion: Within the limits of this short term evaluation, there is no significant clinical difference between adhesives (p<0.05).