Good question. All on 4 should look like your very own teeth. it is a form of a denture, but stays in place.. 4 implants are spread out and placed strategically to support a special denture that is screwed into these implants. it is not removable except by the dentist, and tends to be smaller thsn a conventional denture.How the cosmetics appear in your case depends on the time spent and expertise of the denstist making it. Ideally, you should have measurements taken, looking at how high your lip rises when smiling and speaking. That determines the placement of the teeth and HOW MUCH IF ANY GUM WILL SHOW. The teeth should be long enough to appear "natural" at your try-in. You should be able to speak comfortably, and the dentist evaluate this, prior to making either a temporary "first" denture, or your final 4 0n 4. This try in is usually in wax, to get an idea prior to the final.Just because you will need a full ldenture of sorts because you have no more natural teeth, doesnt mean there are no cosmetics involved. A woman should have teeth that look as if "they belong naturally" in her mouth. A man may have a larger size tooth, and a "set up" that gives him a strong masculine appearance.If there is no try-in appointment, or no chance for the dentist to evaluate how much teeth and gum, if any, will show, and for you to see the shade and shape of the teeth----YOU ARE IN THE WRONG OFFICE.