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Maximum stress for restorations with interlayer thickness of 0.3 mm (a), 0.5 mm (b) and 0.75 mm (c) plotted as a function of the porcelain content in the interlayers composition, and analysed in three locations: framework inner part, interface between framework and interlayer (F/I Interface), and interface between interlayer and veneer (I/V Interface).
