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

https://www.mediafire.com/file/09bysq6f7vq1hxg/pdf-56509-33817.pdf/file

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