Leucoplakias need to be checked out, since sometimes they can be the precursors to a dysplasic change and malignancy. They don't always "grow". A simple brush type biopsy would put your mind at rest. It is painless, takes about 4 minutes, can be done in the dentists office, and is inexpensive. What this dentist has told you, I often refer to as "being treated with watchful neglect." Some guys will watch things for years until they finally develop into a cancer that my gardener could diagnose. Get another dentist to do the brush biopsy and be sure what's what.

Brian, stage 4 oral cancer survivor. OCF Founder and Director. The first responsibility of a leader is to define reality. The last is to say thank you. In between, the leader is a servant.