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Effect of bleaching agents containing fluoride or calcium on enamel microhardne...

Rauen,Charles Alex; Chidoski Filho,Júlio Cezar; Bittencourt,Bruna Fortes; Gomes,Giovana Mongruel; Gomes,João Carlos; Gomes,Osnara Maria Mongruel

Abstract Aim: To evaluate the effect of different in-office bleaching agents on the permeability, roughness and surface microhardness of human enamel. Methods: For evaluation of roughness and microhardness, 40 hemi-faces of 20 premolars were subjected to initial roughness (Ra parameter) and microhardness (VHN) measurements. Thirty-two premolar's crowns were used for permeability test. Then, all specimens were r...

Date: 2015   |   Origin: Oasisbr
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