If you need some dental work done or if you think you may have a cavity, then you'll want general dentistry from a general dentist. General dentistry can also help you maintain the health of your teeth. However, if you want your teeth to look amazing, you'll want cosmetic dentistry from a cosmetic dentist. Cosmetic dentistry is about making your teeth look more natural in appearance, as well as whiter and brighter. The general difference between the two types of dentistry is that general dentistry is mostly about the health of your teeth, while cosmetic dentistry is mostly about the look of your teeth.