Effects of Micro-Arc oxidation treatment on the osseointegration of microscrews in bone tissue

OBJECTIVE: This study aimed to examine the surface morphology and physical properties of micro-screws following micro-arc oxidation surface treatment, and to verify the findings using an animal experimental model. METHODS: A comparative analysis was conducted between micro-arc oxidized micro-screws (Group B) and conventional micro-screws (Group A). Suitable animal subjects were selected in accordance with experimental criteria. All experimental measured data were subjected to statistical analysis. RESULTS: 1) The threaded portion of micro-screws in Group B exhibited better wettability and roughness compared to those in Group A, along with good coating adhesion. 2) Both the new bone mass and bone combination rate for Group B micro-screws showed an upward trend. CONCLUSION: The study demonstrated that micro-arc oxidation treatment enhanced the surface wettability and roughness of the micro-screws and significantly increased bone formation, suggesting improved stability following treatment.