The best course of treatment for inflamed gums above 6 porcelain veneers that are three years old? (Photo)

I would highly recommend having a dental hygienist clean your teeth.  You may very well need a deep cleaning to remove the bacteria from your roots.  Since the veneers were placed 3 years ago, then it is not likely to be the fault of the dentist that placed the veneers.  Your inflammation is being caused by bacteria that is not being properly removed during brushing, flossing and rinsing.  Good luck and I hope this helps. Follow me if you have more questions.Sarah Thompson, DMDReal Self 100

Start with a cleaning. These veneers may be too close to the bone under the gums. In that case, minor gum sugary to reposition the gum could be done by a periodontis. 

This is a tough question to answer based solely on a photo. As a periodontist, I would need to see X-rays and a chart of the probing depths of your gums in question. It is likely that you will need to first have gum surgery to position the gums a "safe" distance from the margins of the veneers and then you will need to have the veneers redone. This would be the most predictable way to approach this problem. You will need to do your homework and figure out who is an outstanding dentist to perform your veneers. Look up "Prosthodontist" in your area and go meet at least a couple of them for an opinion.