Rule of thumb from my anecdotal experience: If the dentist's office looks all fancy and feng-shui, they're usually the kind that does pointless work (which is w

Rule of thumb from my anecdotal experience: If the dentist's office looks all fancy and feng-shui, they're usually the kind that does pointless work (which is where the money for the fancy office comes from). You can't turn this around and say that any dentist with a humble office will be honest and only do what's necessary, but the likelihood is higher.