جحجاح م., and منذر حداد. “An In-Vitro Study for Comparing Sealing Quality of Bulk Fill and Nano-Hybrid Composite Resin in Class II Restorations”. Tishreen University Journal -Medical Sciences Series, vol. 45, no. 3, July 2023, pp. 155-68, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/14848.