Improving the long-term stability of Ti6Al4V abutment screw by coating micro/nano-crystalline diamond films

- Micro-/nano-crystalline diamond films were deposited on DIO abutment screws.
- Little wear debris was observed after cyclic loading on coated groups.
- No flaking occurred on coated groups after cyclic loading.
- Higher reversed torque values remained after cyclic loading on coated groups.