Table 2:

Classification of groups according to the type of composite and fiber/base composite (n=5 per group)

Group	Veneering composite	Fiber/Base composite
G1	Z250	Braided fiber/Nulite F
G2	Z250	Fiber ribbon/adhesive C
G3	Gradia indirect	Braided fiber Nulite F
G4	Gradia indirect	Fiber ribbon/adhesive C
G5	Z250	No fiber/Nulite F
G6	Z250	No fiber/adhesive C
G7	Gradia indirect	No fiber/Nulite F
G8	Gradia indirect	No fiber/adhesive C