DETROIT — Great Expressions Dental Centers, founded in Michigan and headquartered in Bloomfield Hills, is an impressive growth story, with about $275 million in annual revenue and a spot on Inc. magazine's list of America's fastest-growing private companies, according to a report in USA Today. At some 60 Great Expressions dental offices in Michigan — and 140 more nationwide — the profits from filling cavities and getting braces for kids ultimately help to fund the retirement of hundreds of thousands of municipal workers in Canada, says the report.

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