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

https://www.mediafire.com/file/l6skjtotxi2hese/pdf-93835-68272.pdf/file

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