Every treatment that I've ever done in my entire dental career has been as beautiful and cosmetic as I can make it, given the patient's circumstances and the technology of the time.
That doesn't mean I'm a "cosmetic dentist."
Have a look at this case (which is 20 years old and predates me!):
A dentist who practices cosmetically, with patients' oral health as the most vital goal, would lighten this patient's teeth if the patient desired that, and then restore those two front teeth with a new restoration that: matched the surrounding teeth in color and opacity, was symmetrical, fit within the arch, and gained better health of the gums, among other things.
An aggressive "cosmetic dentist" might suggest (read: present as the only reasonable treatment) a restoration for these two teeth that was as white and opaque as a sample of toilet bowl porcelain, and also veneers for at least the surrounding six teeth, three on a side, making a restoration of eight teeth in all. Hey, that way, they'd all match, right?
Caveat Emptor. Here are two principles for you, the dental consumer, to be guided by when it comes to esthetics:
-Every treatment should be based on sound biological principles and designed to promote oral health; this can be completely consistent with beautiful esthetics.
-Excellent dentistry is cosmetic dentistry; and yet there are times when those who present themselves as a "cosmetic dentist" are going to be aggressive in their approach. Understanding the distinction will protect you.