White band along gingival margin
This patient presents with a white band along the palatal gingival margin of tooth #8. The band comes and goes on the facial also, but the palatal is pretty constant. The white tissue can be scraped off with a scaler, but reappears. The patient complains that it feels "thick" and "stiff" like a "cuticle".
She is healthy, non-smoker. She wears a Vivera retainer, which has been cut short to make sure there is no contact irritation. She had a resin bonded bridge for many years, could it be that some residual bonding or composite is causing this lesion?
I appreciate your input.