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

https://www.mediafire.com/file/7h9nf2cemw5vl40/pdf-54045-80957.pdf/file

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