There are five ways to differentiate yourself and become a superhero dentist.
You can tailor your services to a specific demographic. (kids, senior, family)
You can concentrate. (niches, specific services)
You can be exclusive and be the only dentist in town that does -xyz-. (unique, unmatched, unprecedented)
You can use superlatives and be specific. (leading, #1, #2, top)
You can leverage perception and avoid being compared. (books, dvds, webinars)
…or why not be all five?