Evaluation of home bleaching gel modified by different thickeners on the physical properties of enamel: an in situ study - Silva, Bruna Guerra; Gouveia, Thayla Helle Nunes; Silva, Marcelo de Assumpção Pereira da; Ambrosano, Gláucia Maria Bovi; Aguiar, Flávio Henrique Baggio; Lima, Débora Alves Nunes Leite (European Journal of Dentistry, 2018)