If you clench or grind, discuss it before whitening; enamel wear and exposed dentin can increase sensitivity

https://martinvddt734.iamarrows.com/factors-to-pick-professional-whitening-over-store-bought-kits-2

If you clench or grind, discuss it before whitening; enamel wear and exposed dentin can heighten level of sensitivity, requiring tailored protocols and gentler gels.