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

https://andersonwmsf170.yousher.com/the-ultimate-guide-to-professional-teeth-whitening-what-to-expect-2

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