Restoring antique bronze sculptures is a delicate balance between preservation and intervention. One of the primary challenges is retaining the original patina, which holds historical and aesthetic value. Over-cleaning or aggressive techniques can strip away centuries of natural oxidation, irreversibly altering the sculpture's character.

Structural integrity poses another hurdle. Bronze sculptures often develop cracks or corrosion over time, but improper repairs can distort their original form. Conservators must use reversible methods to avoid permanent damage while stabilizing the piece.

Additionally, matching missing elements without overshadowing the original work requires meticulous skill. Modern materials may not age like antique bronze, creating visual discrepancies. Ethical dilemmas also arise—should a sculpture be fully restored to its imagined glory or left with visible traces of its history?

Lastly, documentation is crucial. Every step must be recorded to ensure transparency and guide future restorations. The goal is to honor the artist's intent while safeguarding the sculpture for generations to come.