Effects of prolonged use of over‐the‐counter bleaching agents on enamel: an in vitro study - Manso, Adriana Pigozzo; Morais, Dayana C. de; Yamamoto, Kayoko; Owen, Gethin; Carvalho, Ricardo Marins de; Palma Dibb, Regina Guenka (Microscopy Research and Technique, 2022)