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

https://www.mediafire.com/file/iefsou4kz0fzflh/pdf-40508-74528.pdf/file

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