This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
What is urethane dimethacrylate resin based sealer: 
Select and explain. 
A. Endorez, B. Tubliseal, C. Realseal, D. Sealapex
A: Endorez
Answer: A: Endorez 
Explanation: Endorez is a visible - light curable urethane dimethacrylate gn  based sealer. It is hydrophilic and penetrates deep into dentinal tubules thereby reducing the microbial leakage.