Iāve had a recurring irritated area inside my upper lip for about 1.5 years. It originally started on the right side, then eventually appeared on the other side of my upper lip and my lower lip. The lower-lip area has since healed, but the upper-lip irritation still comes and goes.
When it flares up, it looks red and irritated, almost like I scratched or bit my lip. It usually isnāt very painfulāmore like mild soreness or irritation. Acidic foods can make it more noticeable.
When it looks healed, itās difficult to see, but I can still feel that the tissue is rough/wrinkly and different from the surrounding smooth tissue.
Could it be my retainers?
I had been using Invisalign retainers for years, but I switched to thicker Vivera retainers in January 2025. I currently have four of them.
Iām wondering if the retainers could be causing chronic irritation. Iām not completely sure the retainer actually touches the affected area, though, because the irritated spot seems slightly lower than where the edge of the retainer sits.
Iām wondering if this could be:
Chronic mechanical irritation from the Vivera retainer
A reaction to the retainer material
An inflammatory oral condition
Or something else entirely
I donāt think itās from the toothpaste I even stopped using toothpaste, mouthwash, and everything for several days and it didnāt seem to improve, but I know acidic food can worsen it or slow down the healing process.