Dental The direct bonded orthodontic stainless steel brackets derive retention with composite because of: A The mechanical interlock with mesh at the bracket base B The chemical interlock of composite with bracket base C Both mechanical and chemical interlock of composite with the bracket base D Biological interlock between the tooth surface and bracket 💡 Explanation The direct bonded orthodontic stainless steel brackets derive retention with composite because of: ✓ Correct Answer: A. The mechanical interlock with mesh at the bracket base