Clinical performance of ultra-rapid photo polymerizing bulkfill composite and nano composite using single bond universal adhesive in class ii cavities

Background: The technological improvements in adhesive dentistry have led to development of ultra-rapid photopolymerizing bulkfill which can be cured in 3 or 5 seconds of intense light irradiation and upto 4 mm increments. Objectives: The aim of the present study was to evaluate clinical performance of bulkfill composite (Tetric PowerFill) and nanocomposite (Tetric N Ceram nanohybrid) using Single Bond Universal adhesive in Class II cavities. Materials and Methods: Forty permanent maxillary and mandibular molars were selected in patients and divided into two groups: Group I (n=20) restored with incremental-fill Tetric N Ceram nanohybrid and Group II (n= 20) restored with bulkfill Tetric PowerFill in Class II followed by evaluation at 3, 6 and 9 months according to Modified USPHS criteria for colour match, marginal discoloration, surface texture, anatomic form, marginal integrity, loss/fracture of restoration and secondary caries. Data was analyzed using Chi-square test. Results: Group II as regard color match, marginal discoloration, marginal integrity, surface texture and anatomic contour performed somewhat better than Group I. However, statistically no significant difference was found between Group I and Group II (p> 0.05). Conclusion: Within the limitations of this study, clinical performance of ultra-rapid photo polymerized bulk fill composite, Tetric Power Fill at 9 month was comparable to Tetric N Ceram nanohybrid in Class II restorations.