Correction to: Comparison of the effect of bleaching with 15% carbamide peroxide and 35% hydrogen peroxide on flexural strength of Cention N in self-cured and dual-cured polymerization modes - Narmin Mohammadi; Soodabeh Kimyai; Yasaman Ghavami Lahij; Mahmoud Bahari; Amir Ahmad Ajami; Mahdi Abed Kahnamouei; Mehdi Daneshpooy (Tabriz University of Medical Sciences, 2020)