One who tries to make a good impression

DENTIST

Think of a professional who might leave you smiling wider, but not because they’re flattering you—because they’re fixing what you bite with.

This clue plays on the phrase "making a good impression," which usually means leaving a positive impact—but here, it’s a pun. A dentist literally makes impressions of teeth for molds or dental work. The word "impression" bridges the figurative meaning in the clue to the literal job of the answer.