My top front teeth are implants, joined together. Can they be replaced with separate implants? (Photo)

It sure is possible to separate the crowns, the question is why do you want to?   Is there food getting caught? Is the look of the teeth not right?Joining teeth on implants is done to be able to share the load and increase the surface area the load is transmitted to.  Seperate teeth usually offer no advantage on implants.  Have a talk with your dentist.

You should be able to separate your implant crowns without much difficulty. Difficult to understand from the pic why the crowns are joined. But if your implants are solid, it would be easier to maintoan your crowns and clean them 

In my dental implant practice, I restore the crowns or bridges for dental implants in a variety of ways depending on your unique situation.Everyone usually wants separate individual teeth. Separate dental implant crowns allow you to floss normally between your teeth. Another advantage is that if the porcelain crown breaks or is damaged, it is easily repaired or replaced as one isolated tooth rather than having to replace two or more.