A single-implant abutment only has to fit one interface. A BridgeBase case has to fit all of them at once, without compromise at any single implant. If one abutment in the span is even slightly off-axis or non-passive, that stress doesn’t stay isolated; it transfers across the entire bridge framework and can lead to screw loosening, framework fracture, or long-term implant complications. CIT verifies passive fit across the full span before fabrication proceeds, so practices can trust that a multi-unit bridge case will seat cleanly the first time, without chairside adjustment battles at delivery.