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

https://archeristf570.wpsuo.com/foods-that-discoloration-your-teeth-and-how-to-combat-them

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