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Cross-sectional view of locations for gap width measurements on silicone replicas: P1, marginal gap; P2, cervical gap (400 µm above P1); P3, 1/3 of axial from marginal gap; P4, 2/3 of axial from marginal gap; P5, axio-occlusal transition gap; P6, occlusal gap (1/2 of P5and P7); P7, central gap.
