“…3, 10, 11, 12 and 13 Die spacer has been shown to improve the marginal fit between the restoration and tooth preparation, decreasing the risk of cement dissolution, plaque accumulation, recurrent caries, and periodontal problems. 14 The thickness of this die spacer affects the fracture strength of a ceramic restoration, its retention, and the marginal gap. 1, 2, 15 and 16 According to Tuntiprawon and Wilson, 15 ceramic crowns displayed a greater fracture strength when the mean internal gap at the axial wall was less than 73 μm.…”