Final answer:
Elie gave up the gold tooth in his mouth because it was not suitable for the dental procedures he wanted to undergo.
Step-by-step explanation:
A student named Elie eventually gave up the gold tooth in his mouth for a specific reason. In the text provided, it is mentioned that Elie considered filling the gap left by the extracted tooth with bridging and crowning techniques.
This suggests that Elie gave up the gold tooth because it was not suitable for the dental procedures he wanted to undergo.
By removing the gold tooth, Elie would be able to pursue a different treatment option that would better address his dental needs.