Evaluation of linear-elastic fracture toughness of the teeth restored with different post and core systems - Melo Neto, Clovis Lamartine de Moraes; Francisconi, Paulo Afonso; Mondelli, José; Sabio, Silvia Sbeghen; Poluha, Rodrigo Lorenzi; Sabio, Sergio (Journal of Dentistry and Oral Hygiene, 2015)