Sınıf II Restorasyonlarda Konvansiyonel Bulk-Fill Kompozitler İle Termovisköz Bulk-Fill Kompozitlerin Klinik Olarak Karşılaştırılması

Abstract

The aim of this in vivo study was to evaluate the clinical performance of three different bulk-fill composite resin materials applied to Class II cavities over a 12-month period according to modified USPHS criteria. A total of 168 teeth were included in the study. In each patient, the teeth were randomly assigned into three groups. Each patient received at least three separate Class II restorations. A different bulk-fill composite resin was placed in each tooth by a single operator. Each group consisted of 56 teeth, including a control group. The control group (n=56) was restored using Filtek One Bulk Fill Restorative (3M ESPE, Minnesota, USA). One test group (n=56) received an ormocer-based bulk-fill composite resin, Admira Fusion xtra (Voco GmbH, Cuxhaven, Germany), while the other test group (n=56) was restored with a thermoviscous bulk-fill composite resin, VisCalor Bulk (Voco GmbH, Cuxhaven, Germany). All materials were applied in a single four mm increment according to the manufacturers instructions. A universal adhesive system, Futura Bond U (Voco GmbH, Cuxhaven, Germany), was used for all restorations. The restorations were evaluated using modified USPHS criteria by a different examiner at baseline (one week), six months, and 12 months. Statistical analysis was performed using IBM SPSS for Windows 21.0 (Armonk, NY), employing the Likelihood Ratio Test, Marginal Homogeneity Test, and Bonferroni correction. A statistically significant difference was observed within groups in the criterion of anatomical form (p<0.05). However, no statistically significant differences were found among the restorative materials across all other criteria and evaluation periods at the end of 12 months (p>0.05). This clinical study concluded that all three restorative materials the thermoviscous bulk-fill composite resin (VisCalor Bulk), the ormocer-based bulk-fill composite resin (Admira Fusion xtra), and the conventional bulk-fill composite resin (Filtek One Bulk Fill Restorative) exhibited successful clinical performance over the 12-month period according to modified USPHS criteria.