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  Indian J Med Microbiol
 

Figure 4: Fracture pattern: a, Fracture Mode I: adhesive fracture at the interface between the tooth and the restoration. b, Fracture Mode II: cohesive fracture of tooth structure. c, Fracture Mode III: cohesive failure of the restorative material. d,Fracture Mode IV: complete fracture of the specimens involving the two cusps and the restorative material.

Figure 4: Fracture pattern: a, Fracture Mode I: adhesive fracture at the interface between the tooth and the restoration. b, Fracture Mode II: cohesive fracture of tooth structure. c, Fracture Mode III: cohesive failure of the restorative material. d,Fracture Mode IV: complete fracture of the specimens involving the two cusps and the restorative material.