Sgura, R. (2014) “Effect of Sodium Ascorbate and Ascorbic Acid Hydrogels on Microleakage of Composite Restorations after an Office Bleaching Protocol”, Clinical and Laboratorial Research in Dentistry, 20(1), pp. 4–9. doi:10.11606/issn.2357-8041.v20i1p4-9.