I believe so. I have them and I have had for a long time. Now that I know what to look for I definitely know this is what cause my gums to turn dark. What I wonder is if its reversible; I'm going to...
The easiest solution is to simply cut off the hair to which the gum has become stuck, starting a few centimeters above the gum. the BETTER solution is to use peanut butter and to work work work until...