Abstract
The purpose of the study will be investigate the hypothesis that the heat treatment (annealing), glazy and thermomechanical aging affect the values of flexural strength of a glass-ceramic. Forty-eight ceramic bars (1.2x4x20mm) (VM7 VITA Zahnfabrik), will be subject to four conditions: Group C (control) without treatment, Group A: Anneling, Group G: Glaze and Group AG: Association anneling…