My husband was another one with an initial diagnosis of dysplasia. His did turn malignant (and fortunately was caught at the very earliest stage possible), but that is the exception, NOT THE RULE. (See my signature for more info.)

Now that you have been told you have dysplasia, you need to remain vigilant. After my husband's leukoplakia was identified as dysplasia, I found this site and asked about the diagnosis. Here's what OCF founder Brian Hill replied (the emphasis is mine):
[quote=Brian Hill]Dysplasia are those cells which are no longer normal, but they are not really malignant yet -- an in-between state, so to speak. Dysplasias also do not always go completely over to the dark side, but they are a step in that direction -- and having them removed, or watched very regularly, is prudent. ... Keep an eye on things even after the removal from now until forever.[/quote]
In my husband's case, the excisional biopsy by a local ENT removed the whole thing (the initial biopsy, by an oral surgeon, took only a tiny part of it). When cancer was identified, he immediately was seen by an oral cancer specialist at Johns Hopkins, who determined that no further treatment was necessary but brought him back for regular checkups. He has now "graduated" to an annual check at Hopkins and gets a thorough oral cancer exam (complete with VELscope) every six months by his dentist.

You are lucky to have such a proactive dentist!