Effect of er : yag an diode laser irradiation on the root surface. Morphological and thermal analyses. - Theodoro, Letícia Helena [UNESP]; Haypek, P.; Bachmann, L.; Garcia, Valdir Gouveia [UNESP]; Zezell, D. M.; Sampaio, J. E. C. (Int Amer Assoc Dental Researchi, 2003)