What is a cure? Can we cure periodontal disease?

Let's define a cure? People are out to cure cancer, diabetes, the common cold, where is the push to cure periodontal disease? It's the root of all evil, ask nearly any hygienist, me included. When people talk about the gut and the health of the gut they never think that the mouth is the beginning of the digestive system and it contributes to health as much as the colon. But, they say, we can only manage it. So, what can we do to cure it? Is it possible?
What end point are we looking for, which signs or symptoms are we looking for? In the past we used to measure the bone height around the tooth, once the bone was gone it was gone. We couldn't grow it back, so, periodontal diease was only manageable not cureable. Well, we can grow bone back.
What if we detected the disease before the major damage was done? What if we managed to change the oral flora to be healthful. What if we eliminated the bacteria that cause the tisssue to break down? Would that be a cure? We can do that, easily, I may add. So why keep holding on to the idea that the disease can only be managed. Are you the kind of dental health provider that believes in management of perio only? How can you work in a job that can only manage the most prevalent disease? Cheer up. Periodontal disease is curable.  

http://www.merriam-webster.com/dictionary/cure?show=0&t=1394108998 
Cure: something (such as a drug or medical treatment) that stops a disease and makes someone healthy again
: something that ends a problem or improves a bad situation
: the act of making someone healthy again after an illness