UCLA casting refers to a custom implant abutment technique that uses a wax pattern (or plastic burnout sleeve) to create a precise metal framework for implant-supported restorations. This technique allows for full customization of implant abutments, ensuring proper angulation, soft tissue support, and emergence profile, especially in aesthetic zones. After casting, the metal abutment undergoes polishing to achieve a smooth, precise surface that reduces plaque accumulation, enhances fit, and improves soft tissue health.