Evaluating the Clinical Performance of Highly Filled Injectable Composite and Condensable Universal Composite Restorations: A One-Year Randomized Clinical Trial

Objective: Composite materials are constantly renewed and developed. Recently, injectable composite materials with filler ratios similar to condensable composites have been made available to clinicians. The purpose of this randomized controlled clinical trial was to evaluate the one-year clinical performance of Class II restorations performed with injectable and condensable universal composite resins. Methods: The study involved 71 patients (45 female, 26 male) and 140 restorations. It used G-aenial Universal Injectable (GCI; GC, Tokyo, Japan), G-aenial A'CHORD (GCA; GC, Tokyo, Japan), Tetric Prime (TP; İvoclar Vivadent, Lichtenstein), Filtek Ultimate (FU; 3M ESPE, St. Paul, MN, USA) universal composites, and the Clearfil SE Bond (Kuraray Noritake Dental, Japan) self-etch adhesive system. Restorations were evaluated and scored according to modified USPHS criteria at baseline, six months, and one year. Cochran Q and Fisher-Freeman-Halton tests were used for statistical analysis (p< .05). Results: At the end of the first year, no significant differences over time were observed in any parameter within any material group (p> .05). The study's materials were compared, showing statistically similar results (p> .05). Conclusion: This study found that all materials, including the injectable universal composite, demonstrated similar and successful clinical performance at the end of the first year.